From xen-users-bounces@lists.xenproject.org Wed Jul 01 08:34:38 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Jul 2020 08:34:38 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqYAm-0000Db-2x; Wed, 01 Jul 2020 08:32:52 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqYAk-0000DV-Ow for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 08:32:50 +0000 X-Inumbo-ID: 7276abb2-bb75-11ea-bca7-bc764e2007e4 Received: from mail-wr1-x441.google.com (unknown [2a00:1450:4864:20::441]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 7276abb2-bb75-11ea-bca7-bc764e2007e4; Wed, 01 Jul 2020 08:32:50 +0000 (UTC) Received: by mail-wr1-x441.google.com with SMTP id k6so22903160wrn.3 for ; Wed, 01 Jul 2020 01:32:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=to:from:subject:message-id:date:user-agent:mime-version :content-language; bh=AcO7XxYwAZCDU0zj9fLshxNX9/2KBJQOrk7751045U0=; b=ptCmrYutWPW4lmvyc3bX2fPu6fmlAFnDVJUPUHOwY0Tl6pLWR+LaAPjQMMBB2Eo5NY YDpIGEB+0M/Asy4cFZ3M1ICDiEGKH5rxk+6MQK98l0mcAbh9tAXhSUsavdr3jXWI9wVL 1wmp7EewNB2zamGZN1fy7HXa+w95f3lqSmox98cTKHRSXWZTfMGABa93B5SIZdNKAOdO gh0MVK7Cjm6S7XKTXLo1YF5fIsfKq1/i0cARMUAxxAUT4366003F5Of77i4D2iqisoZ6 TJkzKIWfaSV8EnIjsQa4Z2ILMNGG+bIgZIpKtV7Le7COlv5NnRyJUALbxPA+ExBJ6x92 x7LQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-language; bh=AcO7XxYwAZCDU0zj9fLshxNX9/2KBJQOrk7751045U0=; b=qwIJm0HswQD6e7TnFMZjZ+R0GkF5+11z0qnJBVAg3noVOxvcgalbsXave1WklgQg6e UUBWVXcdVx2egFm+N7V9VAOtrl4HG8LBl3auht+VELntY5b27kt97DNvYN4C+XH2jIYF 07zVAwbgudWO6OvFZR3a8zljJ7MwDmdlTTleN5djGucLTuONHkIxAVu7Tfqs8XUOLjPR fPJRcg2LoquWh9SR6ACtM2s4uzN6wx9HLOeOOsaKRO41TZ5gjvZk2/STlZBPfHFe23jY fWWWF53R3KXoukWTZkxpUc3de4ISYS8VkHmH2RDQLI+KYRDjmsyGwP/gibzHmlalUY1H JAVw== X-Gm-Message-State: AOAM533YFKgoYuNjP4+/X5DQA/IrgNw0ZL/VooaGK9Irj0255T9SL9RI GLJoRxGW8J6gWEZ/7W2nsabWFvJJ X-Google-Smtp-Source: ABdhPJx9OutbNcG5s+a94LXUZ+m4FLOyTv0egW2hRR7MQUMd0duFl7AnBr1rA1fozDeMRvPIyE+AZg== X-Received: by 2002:adf:f20a:: with SMTP id p10mr27184767wro.41.1593592368831; Wed, 01 Jul 2020 01:32:48 -0700 (PDT) Received: from [192.168.0.33] (cpc112441-pres20-2-0-cust437.18-3.cable.virginm.net. [86.17.33.182]) by smtp.gmail.com with ESMTPSA id z8sm4119674wmg.39.2020.07.01.01.32.48 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 01 Jul 2020 01:32:48 -0700 (PDT) To: xen-users@lists.xenproject.org From: Martin Hargreaves Subject: Re: Can't access USBs from DomU Message-ID: <67b8e221-0f0f-cf1a-9f78-29fd8368529d@gmail.com> Date: Wed, 1 Jul 2020 09:32:47 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="------------605D66472775BE70B57B8C10" Content-Language: en-US X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" This is a multi-part message in MIME format. --------------605D66472775BE70B57B8C10 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Thank you for responding, David. Yes, I have been using the link you recommended in order to gain access to the USBs. It appears on Dom0 to have worked okay but I simply can't 'see' the USB on my para-virtualization VM. Thank you for the  www.spice-space.org link; I'll look into that.    Martin.. On 2020-06-25 8:56 a.m., hargreaves martin wrote: A very quick question (hopefully). On Dom0, I can attach my USBs. $ sudo xl usbdev-attach ubud1 hostbus=2 hostaddr=36 $ sudo xl usb-list 5 Devid Type BE state usb-ver ports 0 qusb 0 1 2 8 Port 1: Bus 002 Device 025 Port 2: Bus 002 Device 024 Port 3: … But I can’t see them in my DomU (Ubuntu). Any suggestions? Any help would be very much appreciated. Martin.. I don't do it that way anymore (I use SPICE instead), but the Xen USB Passthrough page helped me when I was trying to figure out how to do it the way you are now: https://wiki.xenproject.org/wiki/Xen_USB_Passthrough Regards, David --------------605D66472775BE70B57B8C10 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

Thank you for responding, David.

Yes, I have been using the link you recommended in order to gain access to the USBs. It appears on Dom0 to have worked okay but I simply can't 'see' the USB on my para-virtualization VM. Thank you for the  www.spice-space.org link; I'll look into that.

   Martin..


On 2020-06-25 8:56 a.m., hargreaves martin wrote:

A very quick question (hopefully).

On Dom0, I can attach my USBs.

$ sudo xl usbdev-attach ubud1 hostbus=2 hostaddr=36

$ sudo xl usb-list 5

Devid Type BE state usb-ver ports

0 qusb 0 1 2 8

Port 1: Bus 002 Device 025

Port 2: Bus 002 Device 024

Port 3:

…

But I can’t see them in my DomU (Ubuntu). Any suggestions?

Any help would be very much appreciated.

Martin..

I don't do it that way anymore (I use SPICE instead), but the Xen USB Passthrough page helped me when I was trying to figure out how to do it the way you are now: https://wiki.xenproject.org/wiki/Xen_USB_Passthrough

Regards,

David

--------------605D66472775BE70B57B8C10-- From xen-users-bounces@lists.xenproject.org Wed Jul 01 09:00:17 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Jul 2020 09:00:17 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqYas-00026x-Ci; Wed, 01 Jul 2020 08:59:50 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqYaq-00026s-2b for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 08:59:48 +0000 X-Inumbo-ID: 35abe040-bb79-11ea-bb8b-bc764e2007e4 Received: from mout.gmx.net (unknown [212.227.17.21]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 35abe040-bb79-11ea-bb8b-bc764e2007e4; Wed, 01 Jul 2020 08:59:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1593593985; bh=y03ECmGFLdtkOKQq15Vzx95s6iYl4mQmbS9ndBvApmY=; h=X-UI-Sender-Class:Date:From:To:Subject; b=hwcbuQusE0Juh3383eODnY+6KQGlqAnmdkIGhYy52gQUKbrC/xUhZaxUntCbUYOMN Xrux02rZ90Vic7wsWMiX7bSzpkJgZUv6gpLX/3MAbwisNTa2VYRhNoF29VlbVHSG0N 15Gkl1oL0ls+NI+qVLMldf2NOLWUC2JCWMzuZEo0= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from satan.chao5.int ([91.64.144.166]) by mail.gmx.com (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MHGCu-1jdNK43fF2-00DEAP for ; Wed, 01 Jul 2020 10:59:44 +0200 Received: from webmail.chao5.int (leviathan.chao5.int [192.168.50.60]) by satan.chao5.int (Postfix) with ESMTP id D3FF3200EAC3 for ; Wed, 1 Jul 2020 10:59:41 +0200 (CEST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.3 at satan.chao5.int MIME-Version: 1.0 Date: Wed, 01 Jul 2020 10:59:41 +0200 From: Christoph To: xen-users@lists.xenproject.org Subject: Crypted devices... where open them? User-Agent: Roundcube Webmail/1.4.6 Message-ID: <4707cf083006ac283a6a5fa9997f427e@gmx.de> X-Sender: mangel@gmx.de Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on satan.chao5.int X-Provags-ID: V03:K1:dUQc6T/p7Kx6LubCT0qfB6ePq3e9T9zObTWudiEy/7GHVJBYVQn ifWPCy6jBDorHICbrtl5R3JJKnJr6LyjBMfIoHc225r5Db0BltVg+zN59LKHw6G6QopkA2z Kto5ilNqTdONvRkUIVa0e5n+pBGOGLy1w+9AgF1CPNyuj+gZ7biPcF3LFCluWi1eT6MWWF/ HJONDOjQyZ2l3L6lln3nQ== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:BjV9PHIZ0IM=:MXyYXQsWAkKbyPb7lfzepE IpCKC+1ct9j+nqzlEvAtqNKjeaZb8Zddcbqu5Fh/Fcpjvm9SO77hvUmUkMjTPYOsqacs4LOth lCTD9G0vAg7FyAUisa18nbSn4oKXYJY+4qsp1Q8jc0rQ123bam6qnrD6rWB4hlxXSAZU6mJ9J YYC0W1vqIHy2mhZ0Rkf9tqoCKlMnH4TxJQmMgLekiXbbmo3+7OsUgpli1Mx4MbzmJvXN6FjDZ O045DO2x0J09NOKd8xVE7Ql66b8CoLONrGwIOQmEm7xohBRvco737gdykEOvVp3vzpBezZPxd rYH9DQV3sIXMXMu9t9bDKUawoQCSuHa/9lMHaJ5CtNrgcjuKcQaipO3RA7vf7OrKa7uq3cLx1 7ojiVF1fvKdvxs99GeYNirazxaYBQcio69A2317OEgFzW/lizgqggzXt3aVrqjL2wYEjiCJQl lkyUDpw3PsoDifs8LLSSoR7f8+XWf7ykv7Hx7knbrgzxG4fMBO8vWzQs5SinMzmUlcrh7qpCU pLVxz2wBzonCVNOyDxxD9DR0s9Bg4Bio934hjBOiwCNrteK6vjqvvlWqxIogYOro7o8Dnm6S/ LlCXXaOmTQ9mxj8Z+1TVoMuXzwrs1Y4G0WzGzzNSpErl5r6hpCVZbr5HCIgVxkL7ivp+H9ID8 UYiUr+UVFcRy226QaxDcMVZxrdg6kRPRckcbCCaE+wMrAXDamLw0jq3Xi1cCteOgsCT3q8kt1 8BugfDYE8IPKgL6IEiosGLBjzL5UA4v78oCCgUCztyERGa/cl1PdSE1/6lXI4hwb6YMZd4i0Q FdxKhqZwop1djZ7NS5bQknxnAl2tmOmBpb+X8Hy3uGaQezxwJED6/EKOnm2RBuMkH9m94/o8c Ngz9oPWroxAs3R41+0a/Lv3KuU+KU8W8P4dJLJgjSpXEVV4Gw6vJ7B2pqPQCl7rvGdZrK1y5t XSkQsuMH8j6g1iM4jcmp/JfcZPLk1c2L7UDty1h8lFbWr1+ZrvIYB+PZGX2dx6hFvyuzUUmPe PhTgbpz63vaLXwJWQnCudibBkXsS7p8+AhUfIgg5/we5Ogg5anrsPhoMYJ1m45yHCTp3eOFVP lCr23ghunOzhMJz0HoGlRJBfIHSDZF7is1vsVIV5wsfjxmlIWvpp3dwDYHsqWSEVJxXQWdvkt mWCbB2nDrZjBT2xUlsxr8vI1Scd7dPnKj/Kcpr6C+j68B7w2Be6BargsF+5gUJPHNAv4A= X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hi I have some crypted (LUKS) devices which I use in some domU's. It is better to passthrough a crypted devices and open it in domU or passthrough an already opened plain device to a domU? =2D- =2D----- Greetz From xen-users-bounces@lists.xenproject.org Wed Jul 01 10:37:39 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Jul 2020 10:37:39 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqa6X-0003BT-9Z; Wed, 01 Jul 2020 10:36:37 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqa6V-0003BO-V2 for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 10:36:36 +0000 X-Inumbo-ID: bc1f08de-bb86-11ea-8496-bc764e2007e4 Received: from mail.bitfolk.com (unknown [2001:ba8:1f1:f019::25]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id bc1f08de-bb86-11ea-8496-bc764e2007e4; Wed, 01 Jul 2020 10:36:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=bitfolk.com; s=alpha; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject:To:From:Date; bh=/+fpeIoo6CRRQ9q9lw0cofcA/049gGf/RQ55qF1Ovkc=; b=DyVZoWDPOpMEgL/hh7fsvrMnD0aBAefBUibLwqtViKYVf3UhnOEB60TE1ofwkypzfWcRORP8Hm/6FcJuONieGj/Sj+af2nELWw/Q+1LcFcOZwcsxaBqfVu/z1t9QQHcKByMAHsih9VfV3tqLlKPkO0gID7HcZCAzA3dSUNYUIqxxXnFfeZvC1Bug3b1UuKYM4wer/2yBIihqHFjC8FU3oORIULM4Uc5nOJfwqH/bBco6wyV3ZicwU1MkVJhT3DRhQqQA6PsdWe9z2ZgC8m757ogSKuAUrXbG+BAHxhGr8KXIXu1MYxIwz7EpsFSklggYsNVaxsbN3SZx/jMkwrGAbA==; Received: from andy by mail.bitfolk.com with local (Exim 4.84_2) (envelope-from ) id 1jqa6U-0007ZN-7p for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 10:36:34 +0000 Date: Wed, 1 Jul 2020 10:36:34 +0000 From: Andy Smith To: xen-users@lists.xenproject.org Subject: Re: Crypted devices... where open them? Message-ID: <20200701103634.GO18995@bitfolk.com> References: <4707cf083006ac283a6a5fa9997f427e@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4707cf083006ac283a6a5fa9997f427e@gmx.de> OpenPGP: id=BF15490B; url=http://strugglers.net/~andy/pubkey.asc X-URL: http://strugglers.net/wiki/User:Andy User-Agent: Mutt/1.5.23 (2014-03-12) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: andy@strugglers.net X-SA-Exim-Scanned: No (on mail.bitfolk.com); SAEximRunCond expanded to false X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hello, On Wed, Jul 01, 2020 at 10:59:41AM +0200, Christoph wrote: > I have some crypted (LUKS) devices which I use in some domU's. > It is better to passthrough a crypted devices and open it in domU or > passthrough an already opened plain device to a domU? I open them inside the domU because not all domUs require encrypted storage. Also some of them are managed by the guest administrators and I don't know the key material - it's not stored in the dom0 storage at all. I would have thought that opening it in dom0 would be slightly less secure as anyone who is root in dom0 can read the block device as if it was not encrypted. Obviously anyone with root in a privileged domain can read the memory of a guest and get the key material out of that anyway, but that would require a bit of motivation at least. Cheers, Andy From xen-users-bounces@lists.xenproject.org Wed Jul 01 10:58:07 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Jul 2020 10:58:07 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqaQ1-0005Rj-J9; Wed, 01 Jul 2020 10:56:45 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqaPz-0005Re-Uz for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 10:56:44 +0000 X-Inumbo-ID: 8a1c4a24-bb89-11ea-86ee-12813bfff9fa Received: from mout.gmx.net (unknown [212.227.17.20]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 8a1c4a24-bb89-11ea-86ee-12813bfff9fa; Wed, 01 Jul 2020 10:56:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1593600936; bh=RrU0j2rh7ZkEuw92lJurbRSw6vZTuqm5ukb0YDiFiNk=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:In-Reply-To:References; b=O2GucJWgnquOZjHzw1pNXIoJrN6E+b+r8OmTZkGAvKIVsBiCd62zTUCfKu9tbDF13 trMIvixDSKbLvxux5lXJi4ZkGw/DO7uxwfmclBdrZPukPUf8ixWuHkyTbtYnPl2s77 T4g6bBdaX65dB7iPk3vbF+N/8fq9621TYGo47xWA= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from satan.chao5.int ([91.64.144.166]) by mail.gmx.com (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MAfUe-1jfXlo00LI-00B6QV; Wed, 01 Jul 2020 12:55:36 +0200 Received: from webmail.chao5.int (leviathan.chao5.int [192.168.50.60]) by satan.chao5.int (Postfix) with ESMTP id 15441200EAC3; Wed, 1 Jul 2020 12:55:33 +0200 (CEST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.3 at satan.chao5.int MIME-Version: 1.0 Date: Wed, 01 Jul 2020 12:55:33 +0200 From: Christoph To: Andy Smith Subject: Re: Crypted devices... where open them? In-Reply-To: <20200701103634.GO18995@bitfolk.com> References: <4707cf083006ac283a6a5fa9997f427e@gmx.de> <20200701103634.GO18995@bitfolk.com> User-Agent: Roundcube Webmail/1.4.6 Message-ID: <8bad7d32dac053fbd566ec773e86d4b4@gmx.de> X-Sender: mangel@gmx.de Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on satan.chao5.int X-Provags-ID: V03:K1:YKGJHYYrNh1O9rrGMClRQdLh6uO+v2xEUNTX00/qfUE7TJdaSvb q8T/GizfjgetQHl9yWXSXaDPwSnDW5/huuu69/t5OIyjKx/m6OfXqSsDAZ+hQoFzPtnjfEL cjcDYNvOgeDq0Kayf6MA/I5pQ25yOomhlG4VkfU1qDwGwT3D6mUWJ9e0phXkh7voglCsZ1C i44MjewVXtzQj8LTSDE9A== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:Z8Ofq9AxCKY=:3zwuyICndhx/0Mpsil1GIy PcLfPoBg2NmdUg5sZeMCgvYyBLEI16rhwU14UUYuwCk7rEuKHSDOWymxuTJScxMf/m0Npar0q eg01YxypqmUhm3Ji5qBrk2x+kSJr+Mq1kBtnPcEJAsgKONrcIVUlL5A9s5eUj7DPjuSRaYCT0 Wa14pKfgxWdyAqXr31O/orkH3Dh+UA1SzEbpjNP1vex7j/PpNsb9ZCEeiTMYNGuykMNVoRhsi UYkvm2DJ2oDnDEUFUb7KYSMdxBvcIQ0iU2iJyqCdXTDE07h1dxfswG9xXDZGZGhGb12pR8qk7 14fc+gDhYu6yz1D/M8Q0hf4wni2a2WQGhRhc2ck3vNW0Zi0KrkyR8bar1wi+nPRvPXtvvVfz4 nAy2K6gaD6a4W+4c7mk+NMrA3DihnWElGrK03ljNLrFke9TfrDuIVcs5J0KEy6cxyL0CJ3bou XW2m0pVk9vAOVkmh9rUp6puySifdWqLMDaH7F0n8f77hANGaZ0snD+lMY5hZ9xhs6gPfCea4/ ou5EZ3RY1aU0yztzC/pt5zzv40BQaFxCWEFNX0MA7wuJBWucOKRpLGSNnkO1CZdOIZPQlzY1u GNdRS6ioCb4us0J2rAso5L8d6Sa/GY2PU4rCJoLsVceWJmhlQafZfITncEAfsMTVa+jN1s1GE 4Yx9Ujp8Q2P3A+RajftVaqVyoHkQBBxHbitWd5d1SkIOeG5I/rHEBpR4sacclovv8r7z4Mt1b Kjn4cCmBahkAmRNmF5HmAh8KrQ9xnk/y5mlrFkx9jANRRKEkr+W6YXZtunI7vICFeC3R1v9hO zoIfl0Rmq1Li21lRcKfKuwKyrSkJtcq0nuP2QmM+NIdWxu332+G9Ep2NFoM6Ma1RN4IOZLtOI Wmn/pA/UzjcHxZRmy1lf+sBde9R1a7UxPGnMiBkmniEY2g7es2HwrbQ99KMD9p/liDuKWQjMr Spqm8baFLiGSXg99HJpl7ZxLHybdSV9XNqRaaBXBD+6SBSl+y6xwWev4ZkdWvE1zyd0AP/wYH msRPl9rJHbgixxqDLplKvbyY6oUoufK1lej2RNuNPmX423lIDA9r1ALdj0yhA3FeedaPwuuHC MsDkxsgGQAAra6pDu9QXhycH6DgR9EfiHXRLqmSrvAx/2YBVobma1hyyJtpf7SiUMS2XDZ02X lduJSAY9bsQIe3DleTxhEBmvNj9oMOe6Qqw1XHwDc9tBgBYbS2N13ncorThE5NBBsgmW6CIcp w7fMK1kG8110KneGV X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xenproject.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" what about the rw performance? I think it should be a little bit performant if I open it in dom0 already? cryptsetup/LUKS uses AFAIK the AES extensions of cpu... does it use it in a domU to? =2D-- =2D----- Greetz Am 01.07.2020 12:36, schrieb Andy Smith: > Hello, > > On Wed, Jul 01, 2020 at 10:59:41AM +0200, Christoph wrote: >> I have some crypted (LUKS) devices which I use in some domU's. >> It is better to passthrough a crypted devices and open it in domU or >> passthrough an already opened plain device to a domU? > > I open them inside the domU because not all domUs require encrypted > storage. Also some of them are managed by the guest administrators and > I > don't know the key material - it's not stored in the dom0 storage at > all. > > I would have thought that opening it in dom0 would be slightly less > secure as anyone who is root in dom0 can read the block device as if > it was not encrypted. Obviously anyone with root in a privileged > domain can read the memory of a guest and get the key material out > of that anyway, but that would require a bit of motivation at least. > > Cheers, > Andy From xen-users-bounces@lists.xenproject.org Wed Jul 01 11:02:34 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Jul 2020 11:02:34 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqaVR-0006UN-TD; Wed, 01 Jul 2020 11:02:21 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqaVP-0006U9-PF for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 11:02:20 +0000 X-Inumbo-ID: 53eaf62a-bb8a-11ea-86ee-12813bfff9fa Received: from mx.mindef.nl (unknown [217.169.235.200]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 53eaf62a-bb8a-11ea-86ee-12813bfff9fa; Wed, 01 Jul 2020 11:02:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mindef.nl; h=from : to : subject : date : references : in-reply-to : content-type : mime-version : message-id; s=key01; bh=+JGxiKP0962ejKXviofsMgih7Qg+mXwKiGsxmxWCCWg=; b=ANnGZIy57eshnsEHFfO10nxgCkayjNY05K3nBLa15stX/fzYrsDZpQL1VSAj2CUU47df CnjKT7keLLH9GqYvY4nUBwCe6TmiUEITPwl8Eu+pj5XQnUiXcH6dmCZY2Gqgt/PCkQEF E8EX8n74wwS8oTyHbZp2ct97gL/ouikJT1Aro7oPM9lXXvLNuoYo3n9OT0IXC90lX41Q HKEssTKvGI4osEtK8UtPE6fCy7FCX54DECMNxfHQUSfjUk0JwoIWNE5o7eKw5pzn0dsK m2izR2518DtYOrTYtsQnzHVdhw8o1oTh3yENFiO5S/k4i0ffP1Ad1qbFglnWDxeL/jWA 0w== Received: by someone from somewhere Message-Id: <31wt6g0rk3-1@0151ims402.msg.iegi.nl> Received: from somewhere by someone Received: from somewhere by someone Received: from somewhere by someone From: To: , Subject: Re: Crypted devices... where open them? Date: Wed, 1 Jul 2020 11:02:16 +0000 References: <4707cf083006ac283a6a5fa9997f427e@gmx.de>, <567e87ec2ba94b4da97a5ecd1979d04d@SAD4331.mod.nl> In-Reply-To: <567e87ec2ba94b4da97a5ecd1979d04d@SAD4331.mod.nl> Accept-Language: en-US, nl-NL Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_mk26l4qmg5h0oilq9p2lmbqm1593601336273emailplusmobileiro_" MIME-Version: 1.0 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --_000_mk26l4qmg5h0oilq9p2lmbqm1593601336273emailplusmobileiro_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable The root user of dom0 might / should be different from the root user of the= domU. From: "Andy Smith" > Date: Wednesday, 1 July 2020 at 12:46:32 To: "xen-users@lists.xenproject.org" > Subject: Re: Crypted devices... where open them? Hello, On Wed, Jul 01, 2020 at 10:59:41AM +0200, Christoph wrote: > I have some crypted (LUKS) devices which I use in some domU's. > It is better to passthrough a crypted devices and open it in domU or > passthrough an already opened plain device to a domU? I open them inside the domU because not all domUs require encrypted storage. Also some of them are managed by the guest administrators and I don't know the key material - it's not stored in the dom0 storage at all. I would have thought that opening it in dom0 would be slightly less secure as anyone who is root in dom0 can read the block device as if it was not encrypted. Obviously anyone with root in a privileged domain can read the memory of a guest and get the key material out of that anyway, but that would require a bit of motivation at least. Cheers, Andy Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u ni= et de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, = wordt u verzocht dat aan de afzender te melden en het bericht te verwijdere= n. De Staat aanvaardt geen aansprakelijkheid voor schade, van welke aard oo= k, die verband houdt met risico's verbonden aan het elektronisch verzenden = van berichten. This message may contain information that is not intended for you. If you a= re not the addressee or if this message was sent to you by mistake, you are= requested to inform the sender and delete the message. The State accepts n= o liability for damage of any kind resulting from the risks inherent in the= electronic transmission of messages. --_000_mk26l4qmg5h0oilq9p2lmbqm1593601336273emailplusmobileiro_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
The root user of dom0 might / should be different from the root user o= f the domU.



From: "Andy Smith" <andy@strugglers.net>
Date: Wednesday, 1 July 2020 at 12:46:32
To: "xen-users@lists.xenproject.org" <xen-users@lists.xenproject.org>
Subject: Re: Crypted devices... where open them?

Hello,

On Wed, Jul 01, 2020 at 10:59:41AM +0200, Christoph wrote:
> I have some crypted (LUKS) devices which I use in some domU's.
> It is better to passthrough a crypted devices and open it in domU or > passthrough an already opened plain device to a domU?

I open them inside the domU because not all domUs require encrypted
storage. Also some of them are managed by the guest administrators and I don't know the key material - it's not stored in the dom0 storage at all.
I would have thought that opening it in dom0 would be slightly less
secure as anyone who is root in dom0 can read the block device as if
it was not encrypted. Obviously anyone with root in a privileged
domain can read the memory of a guest and get the key material out
of that anyway, but that would require a bit of motivation at least.

Cheers,
Andy


Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u ni= et de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, = wordt u verzocht dat aan de afzender te melden en het bericht te verwijdere= n. De Staat aanvaardt geen aansprakelijkheid voor schade, van welke aard ook, die verband houdt met risico's verbonden = aan het elektronisch verzenden van berichten.

This message may contain information that is not intended for you. If you a= re not the addressee or if this message was sent to you by mistake, you are= requested to inform the sender and delete the message. The State accepts n= o liability for damage of any kind resulting from the risks inherent in the electronic transmission of messag= es. --_000_mk26l4qmg5h0oilq9p2lmbqm1593601336273emailplusmobileiro_-- From xen-users-bounces@lists.xenproject.org Wed Jul 01 11:33:23 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Jul 2020 11:33:23 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqaz1-0001EB-D5; Wed, 01 Jul 2020 11:32:55 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqayy-0001E6-U2 for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 11:32:53 +0000 X-Inumbo-ID: 9921c6a2-bb8e-11ea-86f4-12813bfff9fa Received: from gw1.antarean.org (unknown [194.145.200.214]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 9921c6a2-bb8e-11ea-86f4-12813bfff9fa; Wed, 01 Jul 2020 11:32:51 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by gw1.antarean.org (Postfix) with ESMTP id 49xf6R2VLtzyhD for ; Wed, 1 Jul 2020 13:25:35 +0200 (CEST) X-Virus-Scanned: amavisd-new at antarean.org Received: from gw1.antarean.org ([127.0.0.1]) by localhost (gw1.antarean.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QOkewyayzisR for ; Wed, 1 Jul 2020 13:25:34 +0200 (CEST) Received: from mailstore1.antarean.org (localhost [127.0.0.1]) by gw1.antarean.org (Postfix) with ESMTP id 49xf6Q67Pzzydj for ; Wed, 1 Jul 2020 13:25:34 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mailstore1.antarean.org (Postfix) with ESMTP id 49xfGp0pSCz15 for ; Wed, 1 Jul 2020 13:32:50 +0200 (CEST) X-Virus-Scanned: amavisd-new at antarean.org Received: from mailstore1.antarean.org ([127.0.0.1]) by localhost (mailstore1.antarean.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id TviWo-29I4hX for ; Wed, 1 Jul 2020 13:32:49 +0200 (CEST) Received: from eve.localnet (eve.adm.antarean.org [10.55.16.44]) by mailstore1.antarean.org (Postfix) with ESMTPA id 49xfGn66gTzj for ; Wed, 1 Jul 2020 13:32:49 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=antarean.org; s=default; t=1593603169; bh=XQzkbxBYHx6YU/iTBETq3ZEJqB949IMaAfa5DCZJAH8=; h=From:To:Subject:Date:In-Reply-To:References; b=Z2Qd6m2LgMJtEPn5/nzJfpaXm/QwbXIHfNSspwPZeMG51JfXdaqpYYW3QAmqfjARg x+1UwZaJHVhtDzq7izVbpSbFG9qEBS7R36+zV+MWA74NSQ2t0IqFYHibPcxN0RhnNC 0/j5+AyOekaARADSbp0IKTaQeTK/677fgVlzJPgg= From: "J. Roeleveld" To: xen-users@lists.xenproject.org Subject: Re: Crypted devices... where open them? Date: Wed, 01 Jul 2020 13:32:49 +0200 Message-ID: <5371594.DvuYhMxLoT@eve> Organization: Antarean In-Reply-To: <4707cf083006ac283a6a5fa9997f427e@gmx.de> References: <4707cf083006ac283a6a5fa9997f427e@gmx.de> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On Wednesday, July 1, 2020 10:59:41 AM CEST Christoph wrote: > Hi > > I have some crypted (LUKS) devices which I use in some domU's. > It is better to passthrough a crypted devices and open it in domU or > passthrough an already opened plain device to a domU? > > -- > ------ > Greetz I would suggest it depends on who "owns" the domUs. If the domU is not owned by the same person as who owns dom0, then the decryption should be handled in the domU as dom0 should not have access to the decription keys. If you own both dom0 and domU, you can decide where to use the decryption keys. In this case, I would decrypt it on the dom0. The reason being: 1) the dom0 should have less exposure, which means it will be more difficult to break into and grab the keys 2) the data will be accessible anyway as long as the drive is "decrypted", which means as long as the machine is powered, the keys are not really needed. -- Joost From xen-users-bounces@lists.xenproject.org Wed Jul 01 12:07:52 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Jul 2020 12:07:52 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqbUx-00043z-V3; Wed, 01 Jul 2020 12:05:55 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqbUv-00043u-Nj for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 12:05:54 +0000 X-Inumbo-ID: 35b984ec-bb93-11ea-86fa-12813bfff9fa Received: from mail.syndicat.com (unknown [62.146.89.62]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 35b984ec-bb93-11ea-86fa-12813bfff9fa; Wed, 01 Jul 2020 12:05:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=syndicat.com; s=x; h=Content-Type:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:To:From:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=clQejMCTAG84BqAlTYO93iNAoPuKj8xbp2xIzAH7Jnc=; b=ZfhgSfmKys+50mDXR90vaRgcBA jVn2RjMAJDwU2UlExq35tKXjyxZtf6HI6iKkSZW8/skcGY49tzDXOBNBhpa92srT3jhVpdAk1bAja jzvRaceY6pGb+3//T0eYw3PMcYh02D1u57I0SftGQ7/baCWVqWVqlA9jkZF07E/zxphM=; Received: from localhost ([127.0.0.1]:53234) by mail.syndicat.com with esmtp (Syndicat PostHamster 4.92.2) (envelope-from ) id 1jqbUt-00007Q-RX for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 14:05:51 +0200 X-Virus-Scanned: amavisd-new at syndicat.com Received: from mail.syndicat.com ([127.0.0.1]) by localhost (mail.syndicat.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tOLMj6tv9s3d for ; Wed, 1 Jul 2020 14:05:51 +0200 (CEST) Received: from p57949245.dip0.t-ipconnect.de ([87.148.146.69]:39670 helo=gongo.localnet) by mail.syndicat.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Syndicat PostHamster 4.92.2) (envelope-from ) id 1jqbUt-0000cK-FI for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 14:05:51 +0200 From: Niels Dettenbach To: xen-users@lists.xenproject.org Subject: Re: Crypted devices... where open them? Date: Wed, 01 Jul 2020 14:05:50 +0200 Message-ID: <4017780.mogB4TqSGs@gongo> Organization: Syndicat IT&Internet In-Reply-To: <5371594.DvuYhMxLoT@eve> References: <4707cf083006ac283a6a5fa9997f427e@gmx.de> <5371594.DvuYhMxLoT@eve> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" X-Report-Abuse-To: abuse@syndicat.com (see https://www.syndicat.com/kontakt/kontakte/) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - mail.syndicat.com X-AntiAbuse: Original Domain - lists.xenproject.org X-AntiAbuse: Sender Address Domain - syndicat.com X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Am Mittwoch, 1. Juli 2020, 13:32:49 CEST schrieb J. Roeleveld: > If the domU is not owned by the same person as who owns dom0, then the > decryption should be handled in the domU as dom0 should not have access to > the decription keys. This is the design of Xen arch. DomUs superuser by priciple is logically different from Dom0. > If you own both dom0 and domU, you can decide where to use the decryption > keys. > In this case, I would decrypt it on the dom0. The reason being: So if you "own" DomUs and Dom0, you may own the hardware too, so why not=20 doing it in the "storage hardware" (where lot of solutions exist too?)... = =DF)=20 #bitjoke > 1) the dom0 should have less exposure, which means it will be more > difficult to break into and grab the keys On the other hand, such a solution "within xen" would require significant m= ore=20 complexity of Xen which itself would offers more exposure to attackers onto= =20 the whole system (even the ones who did not use that "feature")... The elegantness of xen is his simplicity. i would say: keep it simple and/or "fit your design"... Or use some crypto solutions integrated in the block device solution you=20 decide for to use for DomUs at "device level" and unlock it byself before=20 starting any DomUs - transparent to Xen itself. Xen allows scripting of suc= h=20 stuff. See /etc/xen/scripts/block-* scripts for instance. > 2) the data will be accessible anyway as long as the drive is "decrypted", you probably mean "unlocked"... > which means as long as the machine is powered, the keys are not really > needed. But same "applies" to DomU just my 0.2$ niels. =2D-=20 --- Niels Dettenbach Syndicat IT & Internet http://www.syndicat.com PGP: https://syndicat.com/pub_key.asc --- =20 From xen-users-bounces@lists.xenproject.org Wed Jul 01 12:36:56 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Jul 2020 12:36:56 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqbxd-0007D3-9N; Wed, 01 Jul 2020 12:35:33 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqbxa-0007Cs-NJ for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 12:35:31 +0000 X-Inumbo-ID: 58b48a74-bb97-11ea-bb8b-bc764e2007e4 Received: from gw1.antarean.org (unknown [194.145.200.214]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 58b48a74-bb97-11ea-bb8b-bc764e2007e4; Wed, 01 Jul 2020 12:35:29 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by gw1.antarean.org (Postfix) with ESMTP id 49xgVj11VWzyhD for ; Wed, 1 Jul 2020 14:28:13 +0200 (CEST) X-Virus-Scanned: amavisd-new at antarean.org Received: from gw1.antarean.org ([127.0.0.1]) by localhost (gw1.antarean.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Qkf3XZRk2eFw for ; Wed, 1 Jul 2020 14:28:12 +0200 (CEST) Received: from mailstore1.antarean.org (localhost [127.0.0.1]) by gw1.antarean.org (Postfix) with ESMTP id 49xgVh5mKFzydj for ; Wed, 1 Jul 2020 14:28:12 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mailstore1.antarean.org (Postfix) with ESMTP id 49xgg40bYfz15 for ; Wed, 1 Jul 2020 14:35:28 +0200 (CEST) X-Virus-Scanned: amavisd-new at antarean.org Received: from mailstore1.antarean.org ([127.0.0.1]) by localhost (mailstore1.antarean.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id o8tIpZCyP4Fo for ; Wed, 1 Jul 2020 14:35:26 +0200 (CEST) Received: from eve.localnet (eve.adm.antarean.org [10.55.16.44]) by mailstore1.antarean.org (Postfix) with ESMTPA id 49xgg24bn7zj for ; Wed, 1 Jul 2020 14:35:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=antarean.org; s=default; t=1593606926; bh=1pixyVJZpOcGsDwbuaORDZarJn47rNjxbgoM4YLKpK8=; h=From:To:Subject:Date:In-Reply-To:References; b=MB7wSCYGadztYLqfpZ5is/prTSPzKkxVWhup4btp3ORkZnOkv79VQiZ5elP3YF1Bu 1mB2FThLwvIDAhctF4/SJuEOwbS09MldMUzdRVNAu743R12gEqVXOED3qCVVVTUICB 5g0sck3WqbJ24g+CpIS+jneNEk4Nn6FpEfqT68uY= From: "J. Roeleveld" To: xen-users@lists.xenproject.org Subject: Re: Crypted devices... where open them? Date: Wed, 01 Jul 2020 14:35:26 +0200 Message-ID: <12554013.uLZWGnKmhe@eve> Organization: Antarean In-Reply-To: <4017780.mogB4TqSGs@gongo> References: <4707cf083006ac283a6a5fa9997f427e@gmx.de> <5371594.DvuYhMxLoT@eve> <4017780.mogB4TqSGs@gongo> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On Wednesday, July 1, 2020 2:05:50 PM CEST Niels Dettenbach wrote: > Am Mittwoch, 1. Juli 2020, 13:32:49 CEST schrieb J. Roeleveld: > > If the domU is not owned by the same person as who owns dom0, then the > > decryption should be handled in the domU as dom0 should not have access= to > > the decription keys. >=20 > This is the design of Xen arch. >=20 > DomUs superuser by priciple is logically different from Dom0. In principle, yes. But I meant, are they all managed by the same entity, or= is=20 this a hosting environment where VMs are provided to customers. > > If you own both dom0 and domU, you can decide where to use the decrypti= on > > keys. >=20 > > In this case, I would decrypt it on the dom0. The reason being: > So if you "own" DomUs and Dom0, you may own the hardware too, so why not > doing it in the "storage hardware" (where lot of solutions exist too?)...= =DF) > #bitjoke Hardware solutions are, for me, on the same level as the dom0. > > 1) the dom0 should have less exposure, which means it will be more > > difficult to break into and grab the keys >=20 > On the other hand, such a solution "within xen" would require significant > more complexity of Xen which itself would offers more exposure to attacke= rs > onto the whole system (even the ones who did not use that "feature")... How would this require additional complexity? The block-device is unlocked on the dom0 and the unlocked block device is=20 passed on to the domU. > The elegantness of xen is his simplicity. >=20 > i would say: keep it simple and/or "fit your design"... Agree > Or use some crypto solutions integrated in the block device solution you > decide for to use for DomUs at "device level" and unlock it byself before > starting any DomUs - transparent to Xen itself. Xen allows scripting of s= uch > stuff. See /etc/xen/scripts/block-* scripts for instance. >=20 > > 2) the data will be accessible anyway as long as the drive is "decrypte= d", >=20 > you probably mean "unlocked"... Yes, I quickly typed my reply and got the terminology wrong. > > which means as long as the machine is powered, the keys are not really > > needed. >=20 > But same "applies" to DomU True, in my case, domUs are generally running for the same period as the ho= st=20 itself. Only time they are not running is when the host is off or the domU = is=20 being restarted. =2D- Joost From xen-users-bounces@lists.xenproject.org Wed Jul 01 12:47:10 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Jul 2020 12:47:10 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqc8Q-0008IH-P1; Wed, 01 Jul 2020 12:46:42 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqc8P-0008IC-6J for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 12:46:41 +0000 X-Inumbo-ID: e83828e5-bb98-11ea-870d-12813bfff9fa Received: from mail.syndicat.com (unknown [62.146.89.62]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id e83828e5-bb98-11ea-870d-12813bfff9fa; Wed, 01 Jul 2020 12:46:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=syndicat.com; s=x; h=Content-Type:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:To:From:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=wBLB4VTKao0Cvybgd2TUqhc6ONDgZPoc9Flt9ZdhoWE=; b=YE5KDSnAR55fj57pOlcY/Evl8t Yx3xchC0Cs7iAumJUf+RVZfdjwm8HJf+7cSkM+IE8T6GLVyAv7Lye//dqXNKPrnueTcDAd/3T+1EG 4XVxrwf3/bPZCj3oKzG2XTPxWFeBZncL9Z1H2EulAUW9j5rJGC9siFiYd5lj3mM8jSjI=; Received: from localhost ([127.0.0.1]:51840) by mail.syndicat.com with esmtp (Syndicat PostHamster 4.92.2) (envelope-from ) id 1jqc8N-0007V4-CQ for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 14:46:39 +0200 X-Virus-Scanned: amavisd-new at syndicat.com Received: from mail.syndicat.com ([127.0.0.1]) by localhost (mail.syndicat.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PbSdvmhZh0th for ; Wed, 1 Jul 2020 14:46:39 +0200 (CEST) Received: from p57949245.dip0.t-ipconnect.de ([87.148.146.69]:40466 helo=gongo.localnet) by mail.syndicat.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Syndicat PostHamster 4.92.2) (envelope-from ) id 1jqc8N-0003sW-2W for xen-users@lists.xenproject.org; Wed, 01 Jul 2020 14:46:39 +0200 From: Niels Dettenbach To: xen-users@lists.xenproject.org Subject: Re: Crypted devices... where open them? Date: Wed, 01 Jul 2020 14:46:38 +0200 Message-ID: <2069492.C4sosBPzcN@gongo> Organization: Syndicat IT&Internet In-Reply-To: <12554013.uLZWGnKmhe@eve> References: <4707cf083006ac283a6a5fa9997f427e@gmx.de> <4017780.mogB4TqSGs@gongo> <12554013.uLZWGnKmhe@eve> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Report-Abuse-To: abuse@syndicat.com (see https://www.syndicat.com/kontakt/kontakte/) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - mail.syndicat.com X-AntiAbuse: Original Domain - lists.xenproject.org X-AntiAbuse: Sender Address Domain - syndicat.com X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Am Mittwoch, 1. Juli 2020, 14:35:26 CEST schrieb J. Roeleveld: > The block-device is unlocked on the dom0 and the unlocked block device is > passed on to the domU. As i wrote, if you want to do some kind of such special solution (which depend in detail from the storage as crypto solution you decide for), you can srcipt that by xen scripting interface: see: /etc/xen/scripts/block* for examples / default scripts which you may adapt for your needs. This then get passsed i.e. by "script" parameter in your DomU storage configs. see i.e.: https://doc.opensuse.org/documentation/leap/virtualization/html/book.virt/cha-xen-vbd.html https://xenbits.xen.org/docs/4.7-testing/misc/block-scripts.txt ther's no need to modify xen itself. hth, niels. -- --- Niels Dettenbach Syndicat IT & Internet http://www.syndicat.com PGP: https://syndicat.com/pub_key.asc --- From xen-users-bounces@lists.xenproject.org Thu Jul 02 05:56:14 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 02 Jul 2020 05:56:14 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqsB4-0006df-Dt; Thu, 02 Jul 2020 05:54:30 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqsB2-0006dZ-8R for xen-users@lists.xenproject.org; Thu, 02 Jul 2020 05:54:28 +0000 X-Inumbo-ID: 7c3e72a2-bc28-11ea-bb8b-bc764e2007e4 Received: from EUR03-AM5-obe.outbound.protection.outlook.com (unknown [40.107.3.68]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 7c3e72a2-bc28-11ea-bb8b-bc764e2007e4; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, I am currently running Xen with SMMU enabled on an ARM64 platform with 4 Co= rtex-A72 cores, GICv2 and SMMUv2. There are SMMU faults when booting Dom0, = such as: [ 3.972767] mmc0: sdhci: Resp(XEN) smmu: /soc/iommu@9000= 000: Unhandled context fault: fsr=3D0x402, iova=3D0xea060200, fsynr=3D0x180= 000, cb=3D0 Has someone encountered such problems and can provide some guidelines for S= MMU support on Dom0? Regards, Anda --_000_VE1PR04MB6429AFDAB445C6F2B5B55B70BA6D0VE1PR04MB6429eurp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi,

 

I am currently running Xen with SMMU enabled on an A= RM64 platform with 4 Cortex-A72 cores, GICv2 and SMMUv2. There are SMMU fau= lts when booting Dom0, such as:

 

        &nbs= p;       [   = 3.972767] mmc0: sdhci: Resp(XEN) smmu: /soc/iommu@9000000: Unhandled conte= xt fault: fsr=3D0x402, iova=3D0xea060200, fsynr=3D0x180000, cb=3D0  

 

Has someone encountered such problems and can provid= e some guidelines for SMMU support on Dom0?

 

Regards,

Anda

 

 

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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DB6PR0402MB2760.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 74831ddc-7a19-4617-ab2b-08d81e4d1b2f X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Jul 2020 05:59:38.8829 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: YA4NWoHF+FsPvWOqyO5PEpmCezlNetTV90VLqoTLIxkWQ2X8tS7U8DMOOchdiGsN43DLPoSVtGsI+jAvIDsOoA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR04MB5467 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Subject: Xen SMMU support Hi, I am currently running Xen with SMMU enabled on an ARM64 platform with 4 Co= rtex-A72 cores, GICv2 and SMMUv2. There are SMMU faults when booting Dom0, = such as: =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 [=A0=A0=A0 3.972767] mmc0: sd= hci: Resp(XEN) smmu: /soc/iommu@9000000: Unhandled context fault: fsr=3D0x4= 02, iova=3D0xea060200, fsynr=3D0x180000, cb=3D0 =A0 Has someone encountered such problems and can provide some guidelines for S= MMU support on Dom0? [Peng]: You enabled SMMU for Dom0? Which master issues 0xea060200? Did you = let smmu cb0 sharing same mmu table as dom0 mmu stage2? Regards, Peng. 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There are SMMU faults when booting Dom0= , such as: > =20 > [ 3.972767] mmc0: sdhci: Resp(XEN) smmu: /soc/iommu@90= 00000: Unhandled context fault: fsr=3D0x402, iova=3D0xea060200, fsynr=3D0x1= 80000, cb=3D0 =20 > =20 > Has someone encountered such problems and can provide some guidelines for= SMMU support on Dom0? This means that the access to 0xea060200 was forbidden by the SMMU. It also tells you that the DMA master ID of your device is handled by the S= MMU context bank 0 So first thing to check is if 0xea060200 is a valid guest physical address = in your Dom0. Normally Xen should use the same page tables for the SMMU and the dom0 so i= f something is accessible by the guest it is accessible for the devices ass= ign to it. Here the device seem to properly be assigned to dom0 so maybe the driver is= trying to hit somewhere invalid ? Regards Bertrand > =20 > Regards, > Anda From xen-users-bounces@lists.xenproject.org Thu Jul 02 10:50:07 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 02 Jul 2020 10:50:07 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqwli-0007Oi-IW; Thu, 02 Jul 2020 10:48:38 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqwlh-0007Od-Fq for xen-users@lists.xenproject.org; Thu, 02 Jul 2020 10:48:37 +0000 X-Inumbo-ID: 950b1d5c-bc51-11ea-b7bb-bc764e2007e4 Received: from mail-io1-xd33.google.com (unknown [2607:f8b0:4864:20::d33]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 950b1d5c-bc51-11ea-b7bb-bc764e2007e4; Thu, 02 Jul 2020 10:48:36 +0000 (UTC) Received: by mail-io1-xd33.google.com with SMTP id k23so28312291iom.10 for ; Thu, 02 Jul 2020 03:48:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=6Q62Li9tT0CBJB6GkguNd8wtP3ODIY/r1Nm0jokGEgI=; b=c4f622FXqWDTh+ph9kPIiB5Nqg6kyH82HDdI1Nb2gzgullnVBjvMeQgxbTOGnTyWuf nMD5hUQSstfGAZVzEN+cFsenVXw+BMqyu6csg6iZrtA6Nu1upSmqJGWG84CvNRqRwgS2 Ft2UT+oWNhSYQ9yoqX8OkeB47vzomM6TQ52OSMwBNMihLiW146MuKw2Cn2i9xTTwDOf5 ona1Ih5gz33s1DS0b/s1XG1g2Bk8FYQBfIEjBUmxKa0i7BHRYL1ote8+qd4ugUZz5ZX8 WO3g3UlQq0beYp+TeCf5GjZz4UHRhL5TlMvDF9e4EMyBOzSdTM9wdcB7MvWL3WJonHR1 0f9Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=6Q62Li9tT0CBJB6GkguNd8wtP3ODIY/r1Nm0jokGEgI=; b=ml6tB6yl2y3pR7vWPQct1LffCVGJAcnLkd5t+D8KgU9jPXFfF56UIpqNaIAwv50KxE shA+EXHWS06Wil7v11TnpxLKTK7VvPdaaslGjgF55vGRCLvAr8nRHvLYfs+MXde33c+j Tdr0hm+pntmirsVuglVJK/6c++qepLiCtv+QLyciuSHG/lqCexK1SwgQo4bIsAOd/DTL PD1xMhmka0XPWueO0EwAe8jcnxRotlygxENIyc5dRi1mj7JVj3LheG4kmgyVf9LexVEg aAaVVS4hRORJWwGhg5oSgKAjhKLOAo1Iy/6uFYNSkF7OedhchR6f48f9TRcNEfKYkhTj E4tA== X-Gm-Message-State: AOAM531pvJpo9+D3kmOP+IKsEvvJbH3AJKTJ2fYbtOzbpkhtGu02k1ev Y45KT1uOfeo+T2rjU4yQEbmlCvpYwsWI3+0iz/TM6ACFn6o= X-Google-Smtp-Source: ABdhPJzK77aUbcPBEU2D95v52+/pGcRCmRI7oKDIHZPCAUbUXreaQrD+w/mTZkv/Vk13bjuCmVrjodkgDm8r8PlYOZs= X-Received: by 2002:a02:a19c:: with SMTP id n28mr33267480jah.13.1593686914886; Thu, 02 Jul 2020 03:48:34 -0700 (PDT) MIME-Version: 1.0 From: siddhartha v Date: Thu, 2 Jul 2020 16:18:22 +0530 Message-ID: Subject: Query regarding running Xen on Raspberry-Pi4 To: xen-users@lists.xenproject.org, xen-arm@lists.xensource.com, cardoe@gentoo.org, Bertrand Marquis Content-Type: multipart/alternative; boundary="00000000000071f12005a97326a3" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --00000000000071f12005a97326a3 Content-Type: text/plain; charset="UTF-8" Hello, I am trying to run the Xen hypervisor on Raspberry-pi4. I have built the xen image using yocto without any error. Below is the log that I got after completing the "bitbake -k xen-image-minimal" command, *NOTE: Setscene tasks completedNOTE: Tasks Summary: Attempted 4087 tasks of which 4087 didn't need to be rerun and all succeeded.* But due to COVI-19 I am not having access to RPI4 board (but in next few days I will be getting the board). So is there any way that I can test the image? or Can I create the guest domain and test both Dom-0 and Dom-U1 simultaneously later on board? How can I create the guest domain? Please guide me on this kind request. -- Thanks and Regards. Siddhartha V. --00000000000071f12005a97326a3 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello,

=C2=A0 =C2=A0 I am trying to run= the Xen hypervisor on Raspberry-pi4. I have built the xen image using yoct= o without any error.

Below is the log that I got a= fter completing the "bitbake -k xen-image-minimal" command,
=
NOTE: Setscene tasks completed
NOTE: Tasks Summary: Attempted 40= 87 tasks of which 4087 didn't need to be rerun and all succeeded.

=C2=A0 =C2=A0But due to COVI-19 I am not having= access to RPI4 board (but in next few days I will be getting the board). S= o is there any way that I can test the image?=C2=A0
or
= =C2=A0 Can I create the guest domain and test both Dom-0 and Dom-U1 simulta= neously later on board?

How can I create the guest= domain? Please guide me on this kind request.

--
Thanks and Regards.
Siddhartha= V.
=C2=A0
--00000000000071f12005a97326a3-- From xen-users-bounces@lists.xenproject.org Thu Jul 02 11:36:21 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 02 Jul 2020 11:36:21 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqxVE-00035M-GJ; Thu, 02 Jul 2020 11:35:40 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqxVC-00035H-IG for xen-users@lists.xenproject.org; Thu, 02 Jul 2020 11:35:38 +0000 X-Inumbo-ID: 269a9b84-bc58-11ea-8496-bc764e2007e4 Received: from mail-vk1-xa29.google.com (unknown [2607:f8b0:4864:20::a29]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 269a9b84-bc58-11ea-8496-bc764e2007e4; Thu, 02 Jul 2020 11:35:37 +0000 (UTC) Received: by mail-vk1-xa29.google.com with SMTP id r7so6223878vkf.0 for ; Thu, 02 Jul 2020 04:35:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=oaRjCiDRwgtT7WMY+8g7CwJ9r9+VRknpumrPAQn5SYQ=; b=bSSCmHxrGr4fOTPibZ/4sEBkCAIQZgqRVVh84X6/lNJ7BMXWpi4pmd/Ly3rfp+0N3W ipCtv0L9NoGkh7Xan4VfXG4YZthe++KLfdUYVzLHQ2WzufeO/vutnxaJSdtEey76stef j8N6doOqYY8a+W0srXavnRFjEe0F5IS/LsaQ1+po8YJudDX1iipDMZO0GYX0BAyEmkPB 8Goz5cbIwYD4PNIseYSCD3Git+JL2HYBIMf75PdATv8y3geSK8xwP7Mw5XOiWP72Lw8S L/e8j0+PdFVRMMtiX9U0I16korRXsuBkxsTTuecqcil9tJ3wva+J3+7qrHcDL2fig1tf vghA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=oaRjCiDRwgtT7WMY+8g7CwJ9r9+VRknpumrPAQn5SYQ=; b=JEmo9aZ+7+L6fo8Gt6R+eI2AAsnW5eBMHQqUCzDcnjfF9WX3HU1/IKtd0X7sc4BRj4 H9IGI4F8xfCIRjNCMg+sNrYUk2ilW7G88Ir468tgXzHKsUCMxfL6HWsucj83FKPdqaB+ 0x2rsnpGSC+13ouvcYe2xDCy/Yv9MUIiy5jjqnODcikfjYkNjwlImDmDXkOQkUD2GofQ +gLhYsXoGNEK2cj1pi2DbnWzMFQTtzeWNNQeoyEfEVFKQdvOCyBHzpokAx8cjAvv0YIG IPSDbdqKEJ9aE6SEe34ofMa67nS9L62pyukKXs1WCkj8oI3g8xDTXgq3o/hr2BPcWdA/ 8DaA== X-Gm-Message-State: AOAM532+JsUXVYBm6LPen2hnbw5UhBPDLsz4LLqu3Iddq92kavIRZNnE peelixPxcu3i/+KQo1gZ1dK8dK2/C676W2tlSlXavg== X-Google-Smtp-Source: ABdhPJx/J0aIE3w+jqkgRZEbjg3L+XURAGe8Pue7HM87k08SPONI1/XdRBzGNkDjjE5cs4krQnlRj4D8XOHT0oIj35M= X-Received: by 2002:a1f:8c55:: with SMTP id o82mr4935254vkd.18.1593689737455; Thu, 02 Jul 2020 04:35:37 -0700 (PDT) MIME-Version: 1.0 From: Biff Eros Date: Thu, 2 Jul 2020 12:00:25 +0000 Message-ID: Subject: Still struggling to understand Xen To: xen-users@lists.xenproject.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Xen seems to be different to most other forms of virtualisation in the way it presents hardware to the guest. For so-called HVM guests I understand everything: Hypervisor in conjunction with dom0 provides disk and network devices on PCI busses that can be viewed, enumerated with standard off-the-shelf Linux drivers and tools. This is all good. My confusion kicks in when the subject of PV drivers comes up. >From what I understand (not clearly documented anywhere that I could find) the hypervisor/dom0 combination somehow switches mode in response to something the DomU guest does. What exactly? Don't know. But by the time you've booted using the HVM hardware it seems the door is shut, and any attempt to load front-end drivers will then result in 'device not found' messages or whatever. That is, assuming my kernel is configured correctly. So this is presumably why most guests 'connect' to the PV back-end in the initrd. I couldn't really understand if it's the loading of the conventional SCSI driver, or the detection of a SCSI device, or the opening of a conventional SCSI device to mount as root that shuts the above 'door'. Unfortunately there isn't much documentation about kernel configurations for Xen and what documentation I found seemed to be out of date. It's also unclear to me if the back-end drivers in a typical dom0 that you might get from for example XCP-ng, or XenServer, or even AWS can somehow be incompatible with the latest and greatest domU Linux kernels. Is there some kind of interface versioning or are all versions forward and backward compatible? I've been through pretty much all drivers related to Xen, compiled them into my kernel and selected /dev/xvda1 device on boot, but it's still not working for me, the Xen 'hardware' is not being detected, so would appreciate any guidance you can offer. Regards, Mark. From xen-users-bounces@lists.xenproject.org Thu Jul 02 12:18:48 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 02 Jul 2020 12:18:48 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqy9U-0006Zn-8m; Thu, 02 Jul 2020 12:17:16 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqy9S-0006Zi-Qy for xen-users@lists.xenproject.org; Thu, 02 Jul 2020 12:17:14 +0000 X-Inumbo-ID: f40c08f0-bc5d-11ea-8818-12813bfff9fa Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id f40c08f0-bc5d-11ea-8818-12813bfff9fa; Thu, 02 Jul 2020 12:17:10 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id C5DEBB3327; Thu, 2 Jul 2020 12:17:09 +0000 (UTC) Subject: Re: Still struggling to understand Xen To: Biff Eros , xen-users@lists.xenproject.org References: From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: <844657c3-da3b-3f60-4792-ffc4824241e1@suse.com> Date: Thu, 2 Jul 2020 14:11:09 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 02.07.20 14:00, Biff Eros wrote: > Xen seems to be different to most other forms of virtualisation in the > way it presents hardware to the guest. For so-called HVM guests I > understand everything: > > Hypervisor in conjunction with dom0 provides disk and network devices > on PCI busses that can be viewed, enumerated with standard > off-the-shelf Linux drivers and tools. This is all good. My > confusion kicks in when the subject of PV drivers comes up. > > From what I understand (not clearly documented anywhere that I could > find) the hypervisor/dom0 combination somehow switches mode in > response to something the DomU guest does. What exactly? Don't know. > But by the time you've booted using the HVM hardware it seems the door > is shut, and any attempt to load front-end drivers will then result in > 'device not found' messages or whatever. That is, assuming my kernel > is configured correctly. > > So this is presumably why most guests 'connect' to the PV back-end in > the initrd. I couldn't really understand if it's the loading of the > conventional SCSI driver, or the detection of a SCSI device, or the > opening of a conventional SCSI device to mount as root that shuts the > above 'door'. Unfortunately there isn't much documentation about > kernel configurations for Xen and what documentation I found seemed to > be out of date. A typical HVM domain is booted with emulated devices being active (e.g. hda, hdb, ...). The switch to pv devices is normally done before mounting root in order to mount root on the pv device (for performance reasons). In case pv-devices are active the guest kernel will write to a special IO-port emulated by qemu in order to deactivate the emulated devices. This makes sure there are no ambiguous devices (otherwise each device with a pv-driver would show up twice, once via the original driver and once via the pv-driver). Disconnecting the emulated devices can be avoided via the guest kernel boot parameter "xen_emul_unplug". New pv-devices can be added at runtime, but they need to be assigned to the guest from dom0 before. New devices and their parameters are advertised via Xenstore (you need the xenbus driver for that purpose in the guest). > It's also unclear to me if the back-end drivers in a typical dom0 that > you might get from for example XCP-ng, or XenServer, or even AWS can > somehow be incompatible with the latest and greatest domU Linux > kernels. Is there some kind of interface versioning or are all > versions forward and backward compatible? The basic protocol is compatible, some features are advertised by the backend in Xenstore, the frontend knows that way which features are allowed. The frontend will then set feature values in Xenstore to tell the backend how it wants to operate the device. > I've been through pretty much all drivers related to Xen, compiled > them into my kernel and selected /dev/xvda1 device on boot, but it's > still not working for me, the Xen 'hardware' is not being detected, so > would appreciate any guidance you can offer. Are you using Linux or another OS? In Linux you need to use the xen pci device (see the source drivers/xen/platform-pci.c in the kernel tree). platform_pci_probe() contains all function calls to initialize the basic environment for pv-drivers. Juergen From xen-users-bounces@lists.xenproject.org Thu Jul 02 12:20:12 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 02 Jul 2020 12:20:12 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqyC4-0006iQ-SU; Thu, 02 Jul 2020 12:19:56 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jqyC2-0006iJ-Vh for xen-users@lists.xenproject.org; Thu, 02 Jul 2020 12:19:55 +0000 X-Inumbo-ID: 55330cdc-bc5e-11ea-8818-12813bfff9fa Received: from mail.syndicat.com (unknown [62.146.89.62]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 55330cdc-bc5e-11ea-8818-12813bfff9fa; Thu, 02 Jul 2020 12:19:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=syndicat.com; s=x; h=Content-Type:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:To:From:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <67b8e221-0f0f-cf1a-9f78-29fd8368529d@gmail.com> Content-Type: multipart/alternative; boundary="------------F4F4E45BC0932B87A8B159A9" Content-Language: en-US X-CMAE-Envelope: MS4wfP/YE/XiVoW7L762j476ZeLsw4mGTOuSpMJ6ocKJcTc3/I852jDlwcjZiUQB+ZJE+3Rbslkf0tldm3IKFGVIb7GIl1fqergYWdtb10HtQKEz/4ZrnxvR I8BrcqRvWX+Y6NO3cHcasEXs3pBdTQrqmgKn4xer3Aa7uCNdNVF+gv0N4Aewr4UZ1kwKsNFm+RX0Hw== X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" This is a multi-part message in MIME format. --------------F4F4E45BC0932B87A8B159A9 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit On 2020-07-01 1:32 a.m., Martin Hargreaves wrote: > > Thank you for responding, David. > > Yes, I have been using the link you recommended in order to gain > access to the USBs. It appears on Dom0 to have worked okay but I > simply can't 'see' the USB on my para-virtualization VM. Thank you for > the www.spice-space.org link; I'll look into that. > >    Martin.. > > > On 2020-06-25 8:56 a.m., hargreaves martin wrote: > > A very quick question (hopefully). > > On Dom0, I can attach my USBs. > > $ sudo xl usbdev-attach ubud1 hostbus=2 hostaddr=36 > > $ sudo xl usb-list 5 > > Devid Type BE state usb-ver ports > > 0 qusb 0 1 2 8 > > Port 1: Bus 002 Device 025 > > Port 2: Bus 002 Device 024 > > Port 3: > > … > > But I can’t see them in my DomU (Ubuntu). Any suggestions? > > Any help would be very much appreciated. > > Martin.. > > I don't do it that way anymore (I use SPICE instead), but the Xen USB > Passthrough page helped me when I was trying to figure out how to do > it the way you are now: > https://wiki.xenproject.org/wiki/Xen_USB_Passthrough > > Regards, > > David > Hi Martin, Sorry - I should have mentioned that, AFAIK, SPICE is only for use with hvm domUs, which all of mine are. I found the Spice documentation a bit hard to dig through (Spice for Newbies felt like a Masters-level course :-). In case it might save you some time and effort, FWIW, here is my understanding of Spice basics . Spice has three pieces - a Spice server, one or more guest domUs running the spice agent software, and one or more sessions of a Spice viewer/client. They interact using the Spice protocol. SERVER Recent releases of major Linux distributions already have the server component, libspice, available. I  run my dom0 on Debian 10 and run the Spice server there. I didn't have to do anything special to get the Spice server running. (It could be I installed one or more of the libspice-server packages using the package manager). What I mean is that I didn't have to build an upstream version of qemu as I thought I might after reading the (very helpful) Xen page about Spice: https://wiki.xenproject.org/wiki/SPICE_support_in_Xen GUESTS Linux I add pci=nomsi to the kernel boot line as recommended on the Xen page. When first creating a Linux domU, I connect via vnc to check for the spice agent software, vdagent, and install it if it's not already in. I use the Spice section of sample xl configuration file from the Xen page as well - it works fine for me.  Some of the other configuration choices there don't work for me so I modify other parts of the sample file. I believe it's still true that qxl doesn't work for Linux-based domUs, so in the domU .cfg files I have: #VIDEO videoram                = 128 vga                     = 'stdvga' Windows For a Windows domU, the vdagent software is available from the Windows binaries subsection of the Guest section on the spice-space download page: https://www.spice-space.org/download.html The page says: This installer contains some optional drivers and services that can be installed in Windows guest to improve SPICE performance and integration. This includes the qxl video driver and the SPICE guest agent (for copy and paste, automatic resolution switching, ...) I'm not sure how the options are accessed or configured - there doesn't seem to be a Spice-tools executable. I don't have the qxl component working at this point - just haven't had the motivation to look for it as I use the Windows domU infrequently - so I have vga                     = 'stdvga' in the Windows .cfg file as well. I use a modified version of the sample xl.cfg lines from the Xen page for Windows too.  I note that I had to change viridian= from 1 to 0. With viridian=1, my Windows 10 machine wouldn't boot. VIEWER/CLIENT Finally, the viewer software (the actual magic in all of this) is available from the Spice downloads page as well, and (at least on Debian) from the distribution package manager. As you may already have seen, there are several options here. I use virt-viewer because it suits my needs - haven't tried the others. I find it a little unstable - the viewer has some problem with mouse clicks that seems to cause it to shut down from time to time. One handy feature of virt-viewer is that it will also connect via vnc protocol, by replacing: spice://192,168.x.x:6000 (or whathaveyou) with: vnc://192,168.x.x:6000 Once I have all of the above, it's simple to redirect a USB device to a domU through the File menu of virt-viewer, so long as there is some number of ports set out for redirect in the xl.cfg file, like: spiceusbredirection=4 I hope you haven't independently discovered all of this already, but, if you have, I'd appreciate hearing of any errors in the above, as it's been a while since I actually went through it. Regards, David --------------F4F4E45BC0932B87A8B159A9 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit
On 2020-07-01 1:32 a.m., Martin Hargreaves wrote:

Thank you for responding, David.

Yes, I have been using the link you recommended in order to gain access to the USBs. It appears on Dom0 to have worked okay but I simply can't 'see' the USB on my para-virtualization VM. Thank you for the  www.spice-space.org link; I'll look into that.

   Martin..


On 2020-06-25 8:56 a.m., hargreaves martin wrote:

A very quick question (hopefully).

On Dom0, I can attach my USBs.

$ sudo xl usbdev-attach ubud1 hostbus=2 hostaddr=36

$ sudo xl usb-list 5

Devid Type BE state usb-ver ports

0 qusb 0 1 2 8

Port 1: Bus 002 Device 025

Port 2: Bus 002 Device 024

Port 3:

…

But I can’t see them in my DomU (Ubuntu). Any suggestions?

Any help would be very much appreciated.

Martin..

I don't do it that way anymore (I use SPICE instead), but the Xen USB Passthrough page helped me when I was trying to figure out how to do it the way you are now: https://wiki.xenproject.org/wiki/Xen_USB_Passthrough

Regards,

David

Hi Martin,

Sorry - I should have mentioned that, AFAIK, SPICE is only for use with hvm domUs, which all of mine are. 

I found the Spice documentation a bit hard to dig through (Spice for Newbies felt like a Masters-level course :-).

In case it might save you some time and effort, FWIW, here is my understanding of Spice basics .

Spice has three pieces - a Spice server, one or more guest domUs running the spice agent software, and one or more sessions of a Spice viewer/client. They interact using the Spice protocol.

SERVER
Recent releases of major Linux distributions already have the server component, libspice, available. I  run my dom0 on Debian 10 and run the Spice server there. I didn't have to do anything special to get the Spice server running. (It could be I installed one or more of the libspice-server packages using the package manager). What I mean is that I didn't have to build an upstream version of qemu as I thought I might after reading the (very helpful) Xen page about Spice:
https://wiki.xenproject.org/wiki/SPICE_support_in_Xen

GUESTS
Linux
I add
pci=nomsi
to the kernel boot line as recommended on the Xen page.

When first creating a Linux domU, I connect via vnc to check for the spice agent software, vdagent, and install it if it's not already in.

I use the Spice section of sample xl configuration file from the Xen page as well - it works fine for me.  Some of the other configuration choices there don't work for me so I modify other parts of the sample file.

I believe it's still true that qxl doesn't work for Linux-based domUs, so in the domU .cfg files I have:
#VIDEO
videoram                = 128
vga                     = 'stdvga'

Windows
For a Windows domU, the vdagent software is available from the Windows binaries subsection of the Guest section on the spice-space download page:
https://www.spice-space.org/download.html

The page says:
This installer contains some optional drivers and services that can be installed in Windows guest to improve SPICE performance and integration. This includes the qxl video driver and the SPICE guest agent (for copy and paste, automatic resolution switching, ...)

I'm not sure how the options are accessed or configured - there doesn't seem to be a Spice-tools executable. I don't have the qxl component working at this point - just haven't had the motivation to look for it as I use the Windows domU infrequently - so I have
vga                     = 'stdvga'
in the Windows .cfg file as well.

I use a modified version of the sample xl.cfg lines from the Xen page for Windows too.  I note that I had to change viridian= from 1 to 0. With viridian=1, my Windows 10 machine wouldn't boot.

VIEWER/CLIENT
Finally, the viewer software (the actual magic in all of this) is available from the Spice downloads page as well, and (at least on Debian) from the distribution package manager. As you may already have seen, there are several options here. I use virt-viewer because it suits my needs - haven't tried the others. I find it a little unstable - the viewer has some problem with mouse clicks that seems to cause it to shut down from time to time.

One handy feature of virt-viewer is that it will also connect via vnc protocol, by replacing:
spice://192,168.x.x:6000 (or whathaveyou)
with:
vnc://192,168.x.x:6000

Once I have all of the above, it's simple to redirect a USB device to a domU through the File menu of virt-viewer, so long as there is some number of ports set out for redirect in the xl.cfg file, like:
spiceusbredirection=4


I hope you haven't independently discovered all of this already, but, if you have, I'd appreciate hearing of any errors in the above, as it's been a while since I actually went through it.

Regards,

David

--------------F4F4E45BC0932B87A8B159A9-- From xen-users-bounces@lists.xenproject.org Sat Jul 04 19:32:31 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sat, 04 Jul 2020 19:32:31 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jrnsJ-00060L-GA; Sat, 04 Jul 2020 19:30:59 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jrnsH-00060G-HZ for xen-users@lists.xenproject.org; Sat, 04 Jul 2020 19:30:57 +0000 X-Inumbo-ID: e1fe534a-be2c-11ea-8496-bc764e2007e4 Received: from sonic312-21.consmr.mail.bf2.yahoo.com (unknown [74.6.128.83]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id e1fe534a-be2c-11ea-8496-bc764e2007e4; Sat, 04 Jul 2020 19:30:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1593891056; bh=EusAEj1gr5pxro3tVbYkgJ/lEELGPgQgPqY64+vDhZg=; h=Date:From:Reply-To:To:Subject:References:From:Subject; b=HfWozHxorPnDcWIYj5SvBrrDuJSm2kPjlpTk3yDJLjnCeMRr75HqXnqL47+ww+9SnMEz5Lz02syPRxOE8OqrRyi9M+eRMYL34vu3tYEikE7PwIF9QtY4ablTug9ptUQrxRkFZh69sgq1Tj3i6T+LNeBF5gjYb9S/UZUfwULk/UqTOQaQYyb25a5nK2RUrEa3rrNl3OhsX/U7s4a3BG7WurLYAIDiADz7/yyJPYLhpxmFBlkSfEwe9CeKe+GP27RpAG0ajGix8pwtPKgbfkHwj7etGMSnTXFeIG78Pk6ePu4ORhKh0e4Vkj55K3/zdWY9OHis3T2174y78W70hTKfZg== X-YMail-OSG: Upx73rAVM1mvfBm7ZR6i7BHSdhx_6pwNEDB3Tx04ZqgE4IvDttGinhaXhkt.9KC fAtvxOqqBAqkwdUgkdewYoVADlCLIlxyRmQ5WbpfQKvcS5fNkj6_wQ9E5ouY6sS1zUsJZxknLqpS A4r7Yz7ASSvRifc5H5jvUgQjIISsh346p5vX3tE7nKyRK48TlAh.8C9l06hBrZk5Gt_iCOMEgmYP vxheCvOJF.pY6i8GgTPWwfDBZnUV2AL8k9ztOQSUkbl4k5d7c69Rniv0AsleU1RRkJbVRwUUpM3b 2uKUgZSb9ArYtwl6vXEw29EiwDlXoa.9FB9o0nSNP8WuH1xUbgInd.ZRntstb4d1cu3RHjhohuhQ EBrtiD20CBHqpzDL9kNix9CV3WiMDmHgWATbFMl9UMC5bvJCDJzFMvktC8x_XQN24mepZtKbtnBP cdlBh4ChhqqXT4QLJZVdF85YYaE_17S6COD0dA_GVL8PvR_zA7jSV5sXfQId4og81a57vy92jrjz cFeWHT5aZgFw0iN4CYXA52GQ_7MSqeIv2J4w2mVBdrxAVtS5q0tdp8X6eg7cbdgj_pEKvGeg7e8k dAD8gzF1IA.QtLsQSE_nZAL1NcF9bxjrwL6nSy2Y6IKxpiNkMKqgKYNML_SieRnHBGk_NZsm8vrY puqYGYh_x.qeLrPE3cXjtqFEaMj50zbLAVY3dU9s64quB4JzsdhhXVYp0N9IU2Nos1wIf4KLUhbw B3hzJnlitCwbGQr3ZlCDOe3_xgTYaZnTlbyiHHB0cSa3cYoPw7wVyr.hfFLuEC4Ll1OTd4P8wGVa FT9Az6KCITYqpq0vGuKL6UdCFCLBwohB8vZeBDhNvAFNR3wSC0W5A2_5h1ZFXq8sEiTZTK..Jdq2 bDpVX.6_hx2uv_kBBb3PiWZVsI46jPxi.0ikK67uE7EhobxhZ_MVM9IAYZd4lEhBu9Tp7uJps6tI 6Cvsp_sVJBwOsyQUbBiNmnOdAk5le9rk4Xq5aMAzxqJtm3uaAUQuBTEnT82_C1ZiNy5ecXmzXXpo l4nS6Ixz6HQi9fJQc_K4eDnH5NQMUKKj_WEtp1iF7_tpvX4htpoFTTkkGhIDyVSCele37dqAt12y cG.U8J6VKiHIpvkT677go2pf9_VxHWEeYDkg42L3dNihSg5_Ct4Fs0P6m_HpZOEGqNGznqpISxXk _6IedbIt4yn7g8sVFuGT1QR.kgcSqiDdJwVZhscFBY2xBg5sgbkcom2cmsbda3LRD7TNjDfpW1az Pik0_rRGoCiWocXfQrSZCuG57QVJ1qouWQqxAyvJbEbf45BSSwb_h.anzevCb95kjSQpC.3yyQYg p1iMaXVbaH7HmmQ3tz9.kCH9STQu8jNF0I8XKn5OhPDjK7qMTrBBgFtC84onqtWIaNROTl0RyTJb ucEUmt4HASVzXdibMW2rCBAJHAbapoklBQLGmcyDU6SkZD8_eagGtuR1EhidJcr7BDAQYKbBaaFU WmncxaAQg3yU0OLrg4OMJb9QTnP8EJxz3QNZZ Received: from sonic.gate.mail.ne1.yahoo.com by sonic312.consmr.mail.bf2.yahoo.com with HTTP; Sat, 4 Jul 2020 19:30:56 +0000 Date: Sat, 4 Jul 2020 19:30:52 +0000 (UTC) From: Jason Long To: Xen-users Message-ID: <209025853.908348.1593891052840@mail.yahoo.com> Subject: Dom0-less MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_908347_2123245391.1593891052839" References: <209025853.908348.1593891052840.ref@mail.yahoo.com> X-Mailer: WebService/1.1.16197 YahooMailAndroidMobile YMobile/1.0 (com.yahoo.mobile.client.android.mail/6.8.3; Android/7.1.1; NMF26F; bbc100; BlackBerry; BBC100-1; 5.16; 1184x720; ) Content-Length: 979 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: "hack3rcon@yahoo.com" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" ------=_Part_908347_2123245391.1593891052839 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hello,In a slide about dom0-less (https://www.slideshare.net/mobile/xen_com_mgr/xpdds19-keynote-xen-dom0less-stefano-stabellini-principal-engineer-xilinx), why just CPU mentioned? How about other hardware like Memory, NIC, Disk and...? Thanks. ------=_Part_908347_2123245391.1593891052839 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit Hello,
In a slide about dom0-less (https://www.slideshare.net/mobile/xen_com_mgr/xpdds19-keynote-xen-dom0less-stefano-stabellini-principal-engineer-xilinx), why just CPU mentioned? How about other hardware like Memory, NIC, Disk and...?

Thanks.
------=_Part_908347_2123245391.1593891052839-- From xen-users-bounces@lists.xenproject.org Sun Jul 05 10:55:54 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 05 Jul 2020 10:55:54 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1js2IH-00089z-LQ; Sun, 05 Jul 2020 10:54:45 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1js2IF-00089s-GB for xen-users@lists.xenproject.org; Sun, 05 Jul 2020 10:54:44 +0000 X-Inumbo-ID: ec897386-bead-11ea-8496-bc764e2007e4 Received: from de-out1.bosch-org.com (unknown [139.15.230.186]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id ec897386-bead-11ea-8496-bc764e2007e4; Sun, 05 Jul 2020 10:54:40 +0000 (UTC) Received: from si0vm1948.rbesz01.com (lb41g3-ha-dmz-psi-sl1-mailout.fe.ssn.bosch.com [139.15.230.188]) by si0vms0217.rbdmz01.com (Postfix) with ESMTPS id 4B05Dv0bxKz4f3lwL for ; Sun, 5 Jul 2020 12:54:39 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=in.bosch.com; s=key1-intmail; t=1593946479; bh=4XW0biTedxXEHeCWgD27QGwxg2hPwXF6aZcjzBPkSdk=; l=10; h=From:Subject:From:Reply-To:Sender; b=BC1evx3rBpGsLQUGBbT8y+ELrD6gA4H1i/LGGf4ArfBXAZ1CK3jkqU6wPnlqi9RAw lRxgHIOye9xx2ykuLAJpWfe+1aZ0wGt3jGF1XUeUvdPMKyZpLxzl1VRLt3BvZ+GsoB ZuRGEAYV7Otpm2eES9CLd+pQ6vjImIKM43jLk+1k= Received: from si0vm4642.rbesz01.com (unknown [10.58.172.176]) by si0vm1948.rbesz01.com (Postfix) with ESMTPS id 4B05Dv0BNgz3B3 for ; Sun, 5 Jul 2020 12:54:39 +0200 (CEST) X-AuditID: 0a3aad12-235ff700000028b1-4f-5f01b16e6bb8 Received: from si0vm1949.rbesz01.com ( [10.58.173.29]) (using TLS with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by si0vm4642.rbesz01.com (SMG Outbound) with SMTP id DB.00.10417.E61B10F5; Sun, 5 Jul 2020 12:54:38 +0200 (CEST) Received: from FE-MBX2033.de.bosch.com (fe-mbx2033.de.bosch.com [10.3.231.43]) by si0vm1949.rbesz01.com (Postfix) with ESMTPS id 4B05Dt5vPnz6CjZNx for ; Sun, 5 Jul 2020 12:54:38 +0200 (CEST) Received: from SGPMBX2022.APAC.bosch.com (10.187.83.37) by FE-MBX2033.de.bosch.com (10.3.231.43) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.1979.3; Sun, 5 Jul 2020 12:54:38 +0200 Received: from SGPMBX2022.APAC.bosch.com (10.187.83.37) by SGPMBX2022.APAC.bosch.com (10.187.83.37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.1979.3; Sun, 5 Jul 2020 18:54:36 +0800 Received: from SGPMBX2022.APAC.bosch.com ([fe80::2d4d:b176:b210:896]) by SGPMBX2022.APAC.bosch.com ([fe80::2d4d:b176:b210:896%6]) with mapi id 15.01.1979.003; Sun, 5 Jul 2020 18:54:36 +0800 From: "Manikandan Chockalingam (RBEI/ECF3)" To: "xen-users@lists.xenproject.org" Subject: Xen on RCAR Thread-Topic: Xen on RCAR Thread-Index: AdZSuLBWVKyIre8+SkaGW4KytBr6ew== Date: Sun, 5 Jul 2020 10:54:36 +0000 Message-ID: Accept-Language: en-US, en-SG Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.187.56.210] Content-Type: multipart/alternative; boundary="_000_aea652c74d2a4901b9438dbb2a057540inboschcom_" MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpkkeLIzCtJLcpLzFFi42Lhslorq5u3kTHeYM4Kc4t3+/4yOzB6HP5w hSWAMYrLJiU1J7MstUjfLoErY9X0eewF8zUqHi2ewNTAeFGli5GTQ0LAROL7g3UsXYxcHEIC M5gk7uz5wQzhPGaUuH5/KSuE855RYvL7ZVBlnxgl2lq+sEE4Bxklpv3aywYyjE0gRGLf3hvs ILaIgKvEvUXNLCC2sICIxM4X91gg4pISs5ZeZISw9SQW985hArFZBFQk+u9PAbN5Bawlfu36 BTaTUUBWYtHNSWC9zALiEreezGeCOFxAYsme88wQtqjEy8f/WCFsRYlH91cxQdQnSZzs2ccG MVNQ4uTMJywTGEVmIRk1C0nZLCRlEHEdiQW7P7FB2NoSyxa+Zoaxzxx4zIQsvoCRfRWjaHGm QVmuiZmJkV5RUmpxlYGhXnJ+7iZGSCwJ7WD81fFB7xAjEwfjIUYJDmYlEd5ebcZ4Id6UxMqq 1KL8+KLSnNTiQ4zSHCxK4rwqPBvjhATSE0tSs1NTC1KLYLJMHJxSDUybXz7kzjZWXc12Tkez 9qz2XoPWDp69u68917qezvNxhsIuSxcFJ4Ekpyk2WR6qXNub8rTmW7w7NdGrkEewYSf/Pokt e2Rmn71SdfAGl1fwpqI575XKl55cuyot7c8/oS37fGdL1WfImLYLXq5n1A59L2jQYqQR6Bkl dvMGp8fENlGmAnGerXyfjK8Xn2kNYntlIHRCiXFp62fPB8lzX5/f9a/uTd0MtjyRrmveNge/ OE0//q2ie2uSw9slAofk5/TM7fnE9lxZkIGv35Yp7WpEPufLfeaqGjxfZF5PjluQZGywm+mX loXZz+y0UPdk2der5+zW/vRjgYHVzaQ3FbHlL3KjnuSt6JRhSV4fq8RSnJFoqMVcVJwIAKzI 6nMUAwAA X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --_000_aea652c74d2a4901b9438dbb2a057540inboschcom_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hello, Anybody tried xen on rcar salvator? I am following the https://wiki.xenproj= ect.org/wiki/Xen_ARM_with_Virtualization_Extensions/Salvator-X steps. But facing the following error while building Collected errors: * satisfy_dependencies_for: Cannot satisfy the following dependencies for x= en-base: * xen-libfsimage * xen-fsimage * * opkg_install: Cannot install package xen-base. ERROR: core-image-weston-1.0-r0 do_rootfs: Function failed: do_rootfs Thanks, Manikandan --_000_aea652c74d2a4901b9438dbb2a057540inboschcom_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hello,

 

Anybody tried xen on rcar salvator? I am following th= e https://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions/Sal= vator-X steps.

 

But facing the following error while building

 

Collected errors:

* satisfy_dependencies_for: Cannot satisfy = the following dependencies for xen-base:

*      xen-libfsim= age *        xen-fsimage *

* opkg_install: Cannot install package xen-= base.

ERROR: core-image-weston-1.0-r0 do_rootfs: = Function failed: do_rootfs

 

Thanks,

Manikandan

--_000_aea652c74d2a4901b9438dbb2a057540inboschcom_-- From xen-users-bounces@lists.xenproject.org Sun Jul 05 16:23:09 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 05 Jul 2020 16:23:09 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1js7Oh-0001pp-50; Sun, 05 Jul 2020 16:21:43 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1js7Of-0001pj-J0 for xen-users@lists.xenproject.org; Sun, 05 Jul 2020 16:21:41 +0000 X-Inumbo-ID: 9b13aa8e-bedb-11ea-bb8b-bc764e2007e4 Received: from xtrwsqzp.outbound-mail.sendgrid.net (unknown [167.89.100.227]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 9b13aa8e-bedb-11ea-bb8b-bc764e2007e4; Sun, 05 Jul 2020 16:21:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sendgrid.net; h=mime-version:content-type:content-transfer-encoding:from:subject:to; s=smtpapi; bh=eS6tHEJe5NL6TjoOzJhFL4kA6/wKFNIGIOnZuEqb2eg=; b=LHsX//lx+KZrEhl5oznAUmsvrSb0m+iYa3O4lrCf0voBFJbFuL46KQXeLVZXsoapo/S9 o6HHuyfGyj1OyY5GhNHUv6D27RrNCxxVSCkEk89VY3AT+q8oLVGfJCwBODJIXfgk4R5nXX eY6BPttEXIGqHHgyJA3hirvEokhYn+T8Q= Received: by filterdrecv-p3iad2-5b55dcd864-rnx82 with SMTP id filterdrecv-p3iad2-5b55dcd864-rnx82-18-5F01FE13-27 2020-07-05 16:21:39.408511699 +0000 UTC m=+774744.045260593 Received: from cloudmachine.kow.is (unknown) by ismtpd0015p1iad2.sendgrid.net (SG) with ESMTP id vNirraHESRSulgI0O_L7KA for ; Sun, 05 Jul 2020 16:21:39.298 +0000 (UTC) Received: from soulreaver.dark.kow.is (unknown [10.10.220.216]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "soulreaver.dark.kow.is", Issuer "dark.kow.is CA" (not verified)) by cloudmachine.kow.is (Postfix) with ESMTPS id CBA8E7D518 for ; Sun, 5 Jul 2020 11:21:38 -0500 (CDT) Received: from localhost (elzevir.dark.kow.is [10.10.220.205]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by soulreaver.dark.kow.is (Postfix) with ESMTPSA id 7A3478003F for ; Sun, 5 Jul 2020 11:21:38 -0500 (CDT) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Date: Sun, 05 Jul 2020 16:21:39 +0000 (UTC) From: David Kowis Subject: Having trouble with USB Passthrough to an HVM vm User-Agent: Roundcube Webmail/1.4.0 Message-ID: <08011bdb6e19e7e8308a11d63464056a@kow.is> X-Sender: david@kow.is X-SG-EID: =?us-ascii?Q?+kMxBqj35EdRUKoy8diX1v=2FYwOtV0mBc163WH1fm2RNr7DE+LL3sO=2F0hN7QDBQ?= =?us-ascii?Q?f4UDz=2FoMNQtbZX5gR7vFAJ8TJ7ea9g768ytZUGR?= =?us-ascii?Q?7gYUcQ+Y+mU8fjuf9ozW=2F+5V3uHeoIUvvehLehF?= =?us-ascii?Q?ePTiF6EogT=2FVytnzVzfV0utYEn4QxJ69vqUMu1d?= =?us-ascii?Q?aqL5YbsH27y97taYbUDyBEGlTBZb5VjfasTDpIO?= =?us-ascii?Q?aTWsoNVqh+0EhuqwqBIwJferZVNMPdT8JUSqmz=2F?= =?us-ascii?Q?bPl7jwvJRmeHdlDCSglDw=3D=3D?= To: xen-users@lists.xenproject.org X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Firstly the error, root@nosgoth:/etc/xen/conf# xl create hass-hvm.cfg Parsing config from hass-hvm.cfg libxl: error: libxl_qmp.c:1813:qmp_ev_parse_error_messages: Domain 24:failed to open host usb device 2:3 libxl: error: libxl_create.c:1701:domcreate_attach_devices: Domain 24:unable to add vusb devices libxl: error: libxl_domain.c:1177:libxl__destroy_domid: Domain 24:Non-existant domain libxl: error: libxl_domain.c:1131:domain_destroy_callback: Domain 24:Unable to destroy guest libxl: error: libxl_domain.c:1058:domain_destroy_cb: Domain 24:Destruction of domain failed from /var/log/xen/qemu-dm-hass.log: Warning: speed mismatch trying to attach usb device "host:2.3" (full speed) to bus "xenusb-0.0", port "1" (high speed) qemu-system-i386: terminating on signal 1 from pid 12738 (xl) (that's all there is.) And, my config: name="hass" type="hvm" vcpus=4 memory=2048 maxmem=4096 #device_model_version = "qemu-xen" firmware = "seabios" # Enable pv on hvm drivers xen_platform_pci=1 vif = [ 'mac=00:16:3E:DE:AD:78, bridge=xenbr0' ] boot='c' disk = [ 'phy:/dev/disk/by-path/ip-10.255.255.2:3260-iscsi-iqn.2005-10.org.freenas.ctl:xen-lun-35,xvda,w' #'file:/mnt/systems/ubuntu/18.04/ubuntu-18.04.01-netboot.iso,hdc:cdrom,r' #'file:/mnt/systems/ubuntu/18.04/ubuntu-18.04.4-live-server-amd64.iso,hdc:cdrom,r' ] # usb passthrough for the zwave stick usbctrl=['type=auto,version=2,ports=6'] usbdev=['hostbus=2,hostaddr=3'] #usb=1 #usbdevice=['host:658:200'] vnc=0 # Everything but qxl vga = 'stdvga' # Spice configuration? spice = 1 spicehost = '10.10.220.111' spiceport = 9701 spicepasswd = 'blerp' spicevdagent = 1 spice_clipboard_sharing = 1 Host lsusb: root@nosgoth:/etc/xen/conf# lsusb Bus 002 Device 003: ID 0658:0200 Sigma Designs, Inc. Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 004: ID 0624:0249 Avocent Corp. Virtual Keyboard/Mouse Bus 001 Device 003: ID 0624:0248 Avocent Corp. Virtual Hub Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub root@nosgoth:/etc/xen/conf# lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M |__ Port 5: Dev 3, If 0, Class=Communications, Driver=cdc_acm, 12M |__ Port 5: Dev 3, If 1, Class=CDC Data, Driver=cdc_acm, 12M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M |__ Port 1: Dev 3, If 0, Class=Hub, Driver=hub/5p, 480M |__ Port 1: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 480M |__ Port 1: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid, 480M |__ Port 1: Dev 4, If 2, Class=Human Interface Device, Driver=usbhid, 480M Next, I've built xen by hand from the upstream tarball, 4.13.1 using this docker image: https://gitlab.light.kow.is/kowis-projects/xen-builder Configuration options are as in the readme: ./configure --enable-stubdom --with-extra-qemu-configure-args="--enable-spice --enable-libusb --enable-usb-redir" --with-xenstored=oxenstored --enable-systemd --enable-ovmf I'm not sure why I can't get usb passthrough to work, I kinda need it to work, else I'll have to switch to some other virtualization infrastructure :( I'm hoping it's just something simple, and that ya'll will be able to point it out to me. Thanks! From xen-users-bounces@lists.xenproject.org Mon Jul 06 00:23:26 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 06 Jul 2020 00:23:26 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsEtk-0000aT-8L; Mon, 06 Jul 2020 00:22:16 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsCNl-0003vm-Fj for xen-users@lists.xenproject.org; Sun, 05 Jul 2020 21:41:05 +0000 X-Inumbo-ID: 3845a556-bf08-11ea-8c1c-12813bfff9fa Received: from mail-40135.protonmail.ch (unknown [185.70.40.135]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 3845a556-bf08-11ea-8c1c-12813bfff9fa; Sun, 05 Jul 2020 21:41:01 +0000 (UTC) Date: Sun, 05 Jul 2020 21:40:57 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail; t=1593985260; bh=iGfaoW/gqHkrrjqw+sA1+feKmp1r4Cwdl8m74Yx+vA8=; h=Date:To:From:Reply-To:Subject:From; b=Txmcd/44Ezo3e401OQCFdoJh0CTLhjU75CxSVfwMPIKfiPCzJTuBpIExCTl9lYlN+ ipj37bJS2etFKf1Nk4idM3f7bxJZHdh/t2dIf2HvPuPbgBZhaSLgPXqgZ9gOm+oeZe S0JM9jQsB2o+OvB2ddbpEwJd04b5rhn5TK9AHENI= To: xen-users From: Peter Subject: Xen and Automotive. 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Mon, 6 Jul 2020 07:44:40 +0000 From: Bertrand Marquis To: Peter Subject: Re: Xen and Automotive. Thread-Topic: Xen and Automotive. 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Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsi3E-00059h-6k; Tue, 07 Jul 2020 07:30:00 +0000 Received: from 54-240-197-227.amazon.com ([54.240.197.227] helo=CBG-R90WXYV0.amazon.com) by xenbits.xenproject.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jsi3D-0001hR-RF; Tue, 07 Jul 2020 07:30:00 +0000 From: Paul Durrant To: xen-devel@lists.xenproject.org, xen-users@lists.xenproject.org, xen-announce@lists.xenproject.org Subject: Xen 4.14 RC5 Date: Tue, 7 Jul 2020 08:29:58 +0100 Message-Id: <20200707072958.1035-1-paul@xen.org> X-Mailer: git-send-email 2.17.1 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org, paul@xen.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hi all, Xen 4.14 RC5 is tagged. You can check that out from xen.git: git://xenbits.xen.org/xen.git 4.14.0-rc5 For your convenience there is also a tarball at: https://downloads.xenproject.org/release/xen/4.14.0-rc5/xen-4.14.0-rc5.tar.gz And the signature is at: https://downloads.xenproject.org/release/xen/4.14.0-rc5/xen-4.14.0-rc5.tar.gz.sig Please send bug reports and test reports to xen-devel@lists.xenproject.org. When sending bug reports, please CC relevant maintainers and me (paul@xen.org). As a reminder, there will be a Xen Test Day. Please see the test day schedule at https://wiki.xenproject.org/wiki/Xen_Project_Test_Days and test instructions at https://wiki.xenproject.org/wiki/Xen_4.14_RC_test_instructions. 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Tue, 7 Jul 2020 10:45:47 +0000 From: Bertrand Marquis To: Peter Subject: Re: Xen and Automotive. 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Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsmYX-0002mz-D6; Tue, 07 Jul 2020 12:18:37 +0000 Received: from iwj by xenbits.xenproject.org with local (Exim 4.92) (envelope-from ) id 1jsmYX-0000Xl-BV; Tue, 07 Jul 2020 12:18:37 +0000 Content-Type: multipart/mixed; boundary="=separator"; charset="utf-8" Content-Transfer-Encoding: binary MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) To: xen-announce@lists.xen.org, xen-devel@lists.xen.org, xen-users@lists.xen.org, oss-security@lists.openwall.com From: Xen.org security team Subject: Xen Security Advisory 319 v3 (CVE-2020-15563) - inverted code paths in x86 dirty VRAM tracking Message-Id: Date: Tue, 07 Jul 2020 12:18:37 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "Xen.org security team" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --=separator Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Xen Security Advisory CVE-2020-15563 / XSA-319 version 3 inverted code paths in x86 dirty VRAM tracking UPDATES IN VERSION 3 ==================== Public release. ISSUE DESCRIPTION ================= An inverted conditional in x86 HVM guests' dirty video RAM tracking code allows such guests to make Xen de-reference a pointer guaranteed to point at unmapped space. IMPACT ====== A malicious or buggy HVM guest may cause the hypervisor to crash, resulting in Denial of Service (DoS) affecting the entire host. VULNERABLE SYSTEMS ================== Xen versions from 4.8 onwards are affected. Xen versions 4.7 and earlier are not affected. Only x86 systems are affected. Arm systems are not affected. Only x86 HVM guests using shadow paging can leverage the vulnerability. In addition there needs to be an entity actively monitoring a guest's video frame buffer (typically for display purposes) in order for such a guest to be able to leverage the vulnerability. x86 PV guests as well as x86 HVM guest using hardware assisted paging (HAP) cannot leverage the vulnerability. MITIGATION ========== Running only PV guests will avoid the vulnerability. For HVM guest explicitly configured to use shadow paging (e.g. via the `hap=0' xl domain configuration file parameter), changing to HAP (e.g. by setting `hap=1') will avoid exposing the vulnerability to those guests. HAP is the default (in upstream Xen), where the hardware supports it; so this mitigation is only applicable if HAP has been disabled by configuration. CREDITS ======= This issue was discovered by Jan Beulich of SUSE. RESOLUTION ========== Applying the attached patch resolves this issue. Note that patches for released versions are generally prepared to apply to the stable branches, and may not apply cleanly to the most recent release tarball. Downstreams are encouraged to update to the tip of the stable branch before applying these patches. xsa319.patch xen-unstable, 4.13 - 4.9 $ sha256sum xsa319* 1fe0dc2e274776b8e1275f85129280f280f94ca4eabe6a8166113283dad93ed8 xsa319.meta c145f394f8ac7d8838c376a97e1850c4125c12e478fc66ebe025ae397b27e6ea xsa319.patch $ DEPLOYMENT DURING EMBARGO ========================= Deployment of the patch described above (or others which are substantially similar) is permitted during the embargo, even on public-facing systems with untrusted guest users and administrators. HOWEVER deployment of the "use HAP mode" mitigation described above is NOT permitted (except where all the affected systems and VMs are administered and used only by organisations which are members of the Xen Project Security Issues Predisclosure List). Specifically, deployment on public cloud systems is NOT permitted. This is because in that case the configuration change can be observed by guests, which could lead to the rediscovery of the vulnerability. But: Distribution of updated software is prohibited (except to other members of the predisclosure list). Predisclosure list members who wish to deploy significantly different patches and/or mitigations, please contact the Xen Project Security Team. (Note: this during-embargo deployment notice is retained in post-embargo publicly released Xen Project advisories, even though it is then no longer applicable. This is to enable the community to have oversight of the Xen Project Security Team's decisionmaking.) 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Tue, 07 Jul 2020 12:18:56 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsmYp-0005Sp-9w for xen-users@lists.xen.org; Tue, 07 Jul 2020 12:18:55 +0000 X-Inumbo-ID: fd2469cc-c04b-11ea-bca7-bc764e2007e4 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id fd2469cc-c04b-11ea-bca7-bc764e2007e4; Tue, 07 Jul 2020 12:18:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Date:Message-Id:Subject:CC:From:To:MIME-Version: Content-Transfer-Encoding:Content-Type:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=mFmAfu+l9Qnx7Y9fQVSM/XKGmQ57MHrxuyQCgm25OCQ=; b=qFrRGnrO5DPb5kurUU6le/eUUD CRXilbVw+GyIW2LF4yoHF83eJv2Lo6OS1FSAteKRby6ngUBfP4WTQTQXEktq/crTkHrQadF43OC/W jnoB7/SzpRDfk438u0t5y97zmw9NIc8cVs3vSjL3cKLFhTa2gwzhQ1Z/cOKGfBuF064Q=; Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsmYT-0002mn-TH; Tue, 07 Jul 2020 12:18:33 +0000 Received: from iwj by xenbits.xenproject.org with local (Exim 4.92) (envelope-from ) id 1jsmYT-0000Wl-Q7; Tue, 07 Jul 2020 12:18:33 +0000 Content-Type: multipart/mixed; boundary="=separator"; charset="utf-8" Content-Transfer-Encoding: binary MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) To: xen-announce@lists.xen.org, xen-devel@lists.xen.org, xen-users@lists.xen.org, oss-security@lists.openwall.com From: Xen.org security team Subject: Xen Security Advisory 317 v3 (CVE-2020-15566) - Incorrect error handling in event channel port allocation Message-Id: Date: Tue, 07 Jul 2020 12:18:33 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "Xen.org security team" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --=separator Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Xen Security Advisory CVE-2020-15566 / XSA-317 version 3 Incorrect error handling in event channel port allocation UPDATES IN VERSION 3 ==================== Public release. ISSUE DESCRIPTION ================= The allocation of an event channel port may fail for multiple reasons: 1) Port is already in use 2) The memory allocation failed 3) The port we try to allocate is higher than what is supported by the ABI (e.g 2L or FIFO) used by the guest or the limit set by an administrator ('max_event_channels' in xl cfg). Due to the missing error checks, only 1) will be considered as an error. All the other cases will provide a "valid" port and will result to a crash when trying to access the event channel. IMPACT ====== When the administrator configured a guest to allow more than 1023 event channels, that guest may be able to crash the host. When Xen is out-of-memory, allocation of new event channels will result in crashing the host rather than reporting an error. VULNERABLE SYSTEMS ================== Xen versions 4.10 and later are affected. (The special Xen 4.8 "Comet" branch for XSA-254 contains changes similar to those which led to this vulnerability; so it is likely to be affected, but - like mainline Xen 4.8 - that branch is longer security-supported.) Older Xen versions are unaffected. All architectures are affected. The default configuration, when guests are created with xl/libxl, is not vulnerable, because of the default event channel limit (see Mitigation, below). MITIGATION ========== The problem can be avoided by reducing the number of event channels available to the guest no more than 1023. For example, setting "max_event_channels=1023" in the xl domain configuration, or deleting any existing setting (since 1023 is the default for xl/libxl). For ARM systems, any limit no more than 4095 is safe. For 64-bit x86 PV guests, any limit no more than 4095 is likewise safe if the host configuration prevents the guest administrator from substituting and running a 32-bit kernel (and thereby putting the guest into 32-bit PV mode). CREDITS ======= This issue was discovered by Amazon. RESOLUTION ========== Applying the attached patch resolves this issue. Note that patches for released versions are generally prepared to apply to the stable branches, and may not apply cleanly to the most recent release tarball. Downstreams are encouraged to update to the tip of the stable branch before applying these patches. xsa317.patch Xen 4.10 - xen-unstable $ sha256sum xsa317* 11e77dd8644cee40cee609d02e27d70655f3999005cae8c24fb2801980ebb4f2 xsa317.meta 17908035e2da07f6070fa8de345db68c96ed9bd78f8b114e43ba0194c1be3f15 xsa317.patch $ DEPLOYMENT DURING EMBARGO ========================= Deployment of the *patch* described above (or others which are substantially similar) is permitted during the embargo, even on public-facing systems with untrusted guest users and administrators. But: Distribution of updated software is prohibited (except to other members of the predisclosure list). And: deployment of the event channel limit reduction mitigation is NOT permitted (except where all the affected systems and VMs are administered and used only by organisations which are members of the Xen Project Security Issues Predisclosure List). Specifically, deployment on public cloud systems is NOT permitted. This is because such a change can be visible to the guest, so it would leak the preconditions for the vulnerability and maybe lead to rediscovery. Deployment of this, or similar mitigations, is permitted only AFTER the embargo ends. Predisclosure list members who wish to deploy significantly different patches and/or mitigations, please contact the Xen Project Security Team. (Note: this during-embargo deployment notice is retained in post-embargo publicly released Xen Project advisories, even though it is then no longer applicable. This is to enable the community to have oversight of the Xen Project Security Team's decisionmaking.) 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Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsmbd-0002rk-6d; Tue, 07 Jul 2020 12:21:49 +0000 Received: from iwj by xenbits.xenproject.org with local (Exim 4.92) (envelope-from ) id 1jsmbd-0002Fv-4w; Tue, 07 Jul 2020 12:21:49 +0000 Content-Type: multipart/mixed; boundary="=separator"; charset="utf-8" Content-Transfer-Encoding: binary MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) To: xen-announce@lists.xen.org, xen-devel@lists.xen.org, xen-users@lists.xen.org, oss-security@lists.openwall.com From: Xen.org security team Subject: Xen Security Advisory 321 v3 (CVE-2020-15565) - insufficient cache write-back under VT-d Message-Id: Date: Tue, 07 Jul 2020 12:21:49 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "Xen.org security team" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --=separator Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Xen Security Advisory CVE-2020-15565 / XSA-321 version 3 insufficient cache write-back under VT-d UPDATES IN VERSION 3 ==================== Public release. ISSUE DESCRIPTION ================= When page tables are shared between IOMMU and CPU, changes to them require flushing of both TLBs. Furthermore, IOMMUs may be non-coherent, and hence prior to flushing IOMMU TLBs CPU cached also needs writing back to memory after changes were made. Such writing back of cached data was missing in particular when splitting large page mappings into smaller granularity ones. IMPACT ====== A malicious guest may be able to retain read/write DMA access to frames returned to Xen's free pool, and later reused for another purpose. Host crashes (leading to a Denial of Service) and privilege escalation cannot be ruled out. VULNERABLE SYSTEMS ================== Xen versions from at least 3.2 onwards are affected. Only x86 Intel systems are affected. x86 AMD as well as Arm systems are not affected. Only x86 HVM guests using hardware assisted paging (HAP), having a passed through PCI device assigned, and having page table sharing enabled can leverage the vulnerability. Note that page table sharing will be enabled (by default) only if Xen considers IOMMU and CPU large page size support compatible. MITIGATION ========== Suppressing the use of page table sharing will avoid the vulnerability (command line option "iommu=no-sharept"). Note however that as of Xen version 4.13 there's also a respective per-guest control ("passthrough=" libxl guest config file option). If any guests have been created with an explicit setting here, this setting may conflict with the addition of the "iommu=no-sharept" Xen command line option. Suppressing the use of large HAP pages will avoid the vulnerability (command line options "hap_2mb=no hap_1gb=no"). Not passing through PCI devices to HVM guests will avoid the vulnerability. CREDITS ======= This issue was discovered by Roger Pau Monné of Citrix. RESOLUTION ========== Applying the appropriate set of attached patches resolves this issue. Note that unlike implied by the numbering, the patches here are intended to go on top of XSA-328's. Note also that patches for released versions are generally prepared to apply to the stable branches, and may not apply cleanly to the most recent release tarball. Downstreams are encouraged to update to the tip of the stable branch before applying these patches. xsa321/xsa321-?.patch xen-unstable xsa321/xsa321-4.13-?.patch Xen 4.13.x xsa321/xsa321-4.12-?.patch Xen 4.12.x xsa321/xsa321-4.11-?.patch Xen 4.11.x xsa321/xsa321-4.10-?.patch Xen 4.10.x xsa321/xsa321-4.9-?.patch Xen 4.9.x $ sha256sum xsa321* xsa321*/* f0824c6b6e5de723301223927dbad916e0e5fbeb70f30a7e2467a04094dd840b xsa321.meta 35ed3be5e66da0580de8fb14ee7e6c073ac60e08e022c35ef194a714698641ad xsa321/xsa321-1.patch b2bbb4cf397b7b532dcab120a4d678938c50ca0df6ff2724a416ac8567bd667b xsa321/xsa321-2.patch 87d2e0446ee3fb013c8f307e71c0ddeae8122d6beee3e5d2871aa429d8d19daa xsa321/xsa321-3.patch 38d7e715d4ed751a9ce503b61cacaf2d06c91b2eab4be95cbc3a9ae4d2a05efb xsa321/xsa321-4.9-1.patch e4d5238233c883ea62491f852e543550bce9d74d7239a866f5e117df46838abc xsa321/xsa321-4.9-2.patch d9140aee60c848e2e07a59741bab1fde4669f2627923e5d3f08b8f2971f589c4 xsa321/xsa321-4.9-3.patch be8e320f64185bb29c52c0c1472d9d9aa1319768076ff70e691d4b40f7938a27 xsa321/xsa321-4.9-4.patch 7d83cb2d7de293f8534fa4eae1c56979984d01d8842ac06cfcb645191f27e51f xsa321/xsa321-4.9-5.patch 99c7cf186f0fea47ef516e3d477a5f5068adaad44624b406694b9ff33268e05b xsa321/xsa321-4.9-6.patch 9731286e9af9d83c5bf191aa5a6be0dfa34c79bca15660cd9b9e1c8e930cf974 xsa321/xsa321-4.9-7.patch 360765e859866c466dc1c9c6893dd800407d8f09b0b6f2b07fa403c290c4f0c6 xsa321/xsa321-4.10-1.patch e4d5238233c883ea62491f852e543550bce9d74d7239a866f5e117df46838abc xsa321/xsa321-4.10-2.patch 74b5c19a469cc7252a296cb19288f1ab53a411530d06dd364a0e3292c6aa273f xsa321/xsa321-4.10-3.patch be8e320f64185bb29c52c0c1472d9d9aa1319768076ff70e691d4b40f7938a27 xsa321/xsa321-4.10-4.patch 7d83cb2d7de293f8534fa4eae1c56979984d01d8842ac06cfcb645191f27e51f xsa321/xsa321-4.10-5.patch 99c7cf186f0fea47ef516e3d477a5f5068adaad44624b406694b9ff33268e05b xsa321/xsa321-4.10-6.patch fb3122d23ae7381d798721fe92c622ea2d37baac369fe89b0707030315dfc896 xsa321/xsa321-4.10-7.patch 360765e859866c466dc1c9c6893dd800407d8f09b0b6f2b07fa403c290c4f0c6 xsa321/xsa321-4.11-1.patch 02e2fda4b467f10a7f38cb2a095b9da04289d9e8489db88bf542d6527b823a23 xsa321/xsa321-4.11-2.patch 04c9bc347f8d3cbb8aecede370189bba2ed47be560d1871b91eb01b962a578cc xsa321/xsa321-4.11-3.patch be8e320f64185bb29c52c0c1472d9d9aa1319768076ff70e691d4b40f7938a27 xsa321/xsa321-4.11-4.patch c1b143b43b59244d5dc755f6a99de70ac39e803a7204296bb47300b9ffe26e59 xsa321/xsa321-4.11-5.patch 38456ff553416e48f2f5438c2a5a163b20929e8a58dbe811942d0d47aacfc9ea xsa321/xsa321-4.11-6.patch d3b6df41682e6b88898545590bee8242c00b4593773ba8070ce57a0473094189 xsa321/xsa321-4.11-7.patch c6d00d7a988002687be9a19a2d631c3562d8ec9f02ae24efc23eb0039f9e0ddb xsa321/xsa321-4.12-1.patch 64dd3aa18be3ccb17ab6d813df16e2025adabbe38127f2f00175a6a481651d86 xsa321/xsa321-4.12-2.patch 935346f3d0f2759699b0ccb8002abfb0dc173ec3ed616fb9042ad86751445757 xsa321/xsa321-4.12-3.patch be8e320f64185bb29c52c0c1472d9d9aa1319768076ff70e691d4b40f7938a27 xsa321/xsa321-4.12-4.patch c1b143b43b59244d5dc755f6a99de70ac39e803a7204296bb47300b9ffe26e59 xsa321/xsa321-4.12-5.patch 0da20aeb89e18490d60649dbfdb9c374e5861032da784a7724216c329f2cc5f0 xsa321/xsa321-4.12-6.patch 4d1954600eeca7e2cb9143ea8e32969731071f991a9a88a245c18e860c57c22c xsa321/xsa321-4.12-7.patch 946053a8bba53d87b4164acaf3343e30689d91b505b6355d873c016166d87103 xsa321/xsa321-4.13-1.patch f09e8cbf0cce17647d47f38137792517c8b108c3b54f57793d03578b0d5ccf99 xsa321/xsa321-4.13-2.patch bd50ad52d23c6fc12b69ecaaf41073833cbe9b1d66a9f4e148df078e30dd45d4 xsa321/xsa321-4.13-3.patch b181511962ce397302be8b7d5a130abe0995b3fda68b96f1afa95ae64f62dd09 xsa321/xsa321-4.13-4.patch 3286fc184fb377c1ce94344d1dbae3b78e95b0ae766eabb80b2fc612e59ffb69 xsa321/xsa321-4.13-5.patch 03a193197d176109dc586f4d6a76aebe32a4aa147e88c79d57582cf0a186c4ef xsa321/xsa321-4.13-6.patch ef7f9ac74313d2dabfb258b2519b2144e4feed3c85b5f705c4b1b7ba31ec316a xsa321/xsa321-4.13-7.patch e6d4b77063d4cd7a7242ac54b150ce42ce684ecbf46c7eaff5715976f272f4bc xsa321/xsa321-4.patch 920771be10110a3eef8e4b8644145794d274042092f3aa14e04fa94fc1e78e8a xsa321/xsa321-5.patch b10c5583e01f1c26862806562f30e393960b0bbdd7cf7fca6640f4daa88fe017 xsa321/xsa321-6.patch 18da003fb05b7aebe868ff9f1c77063b8a51be3b07ab0c9fc4821bf46ca86eeb xsa321/xsa321-7.patch $ DEPLOYMENT DURING EMBARGO ========================= Deployment of the patches and/or mitigations described above (or others which are substantially similar) is permitted during the embargo, even on public-facing systems with untrusted guest users and administrators. But: Distribution of updated software is prohibited (except to other members of the predisclosure list). Predisclosure list members who wish to deploy significantly different patches and/or mitigations, please contact the Xen Project Security Team. (Note: this during-embargo deployment notice is retained in post-embargo publicly released Xen Project advisories, even though it is then no longer applicable. This is to enable the community to have oversight of the Xen Project Security Team's decisionmaking.) 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Delivery-date: Tue, 07 Jul 2020 12:24:40 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsmdw-0007GA-G7; Tue, 07 Jul 2020 12:24:12 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsmdv-0007FV-Cj for xen-users@lists.xen.org; Tue, 07 Jul 2020 12:24:11 +0000 X-Inumbo-ID: c2ace552-c04c-11ea-8d5d-12813bfff9fa Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id c2ace552-c04c-11ea-8d5d-12813bfff9fa; Tue, 07 Jul 2020 12:24:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Date:Message-Id:Subject:CC:From:To:MIME-Version: Content-Transfer-Encoding:Content-Type:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=OfSeTYeTsKjSZwvL6r1Hs9ToUyWuj9sme0SjaVk1H1c=; b=ZBe1l2yJAbysjWHq+PAhapWEXn RC0YCao2qaD6diSAoiz3LaKo4oAGseJajxsgLiUab8j71GFiBA+gp9kO5MKdOwP+vvsb0EOGap0ob +yamxp0Rc1lTDxcqIMoCGqbRzqhVAUnPZuJXCBH/IUcnmRJXB1bIUOpfvW8ZQpk+sFtU=; Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsmdp-0002v0-Sz; Tue, 07 Jul 2020 12:24:05 +0000 Received: from iwj by xenbits.xenproject.org with local (Exim 4.92) (envelope-from ) id 1jsmdp-0004Ry-Rv; Tue, 07 Jul 2020 12:24:05 +0000 Content-Type: multipart/mixed; boundary="=separator"; charset="utf-8" Content-Transfer-Encoding: binary MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) To: xen-announce@lists.xen.org, xen-devel@lists.xen.org, xen-users@lists.xen.org, oss-security@lists.openwall.com From: Xen.org security team Subject: Xen Security Advisory 328 v3 (CVE-2020-15567) - non-atomic modification of live EPT PTE Message-Id: Date: Tue, 07 Jul 2020 12:24:05 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "Xen.org security team" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --=separator Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Xen Security Advisory CVE-2020-15567 / XSA-328 version 3 non-atomic modification of live EPT PTE UPDATES IN VERSION 3 ==================== Public release. ISSUE DESCRIPTION ================= When mapping guest EPT (nested paging) tables, Xen would in some circumstances use a series of non-atomic bitfield writes. Depending on the compiler version and optimisation flags, Xen might expose a dangerous partially-written PTE to the hardware, which an attacker might be able to race to exploit. IMPACT ====== A guest administrator or perhaps even unprivileged guest user might be able to cause denial of service, data corruption, or privilege escalation. VULNERABLE SYSTEMS ================== Only systems using Intel CPUs are vulnerable. Sytems using AMD CPUs, and Arm systems, are not vulnerable. Only systems using nested paging ("hap", aka nested paging, aka in this case Intel EPT) are vulnerable. Only HVM and PVH guests can exploit the vulnerability. The presence and scope of the vulnerability depends on the precise optimisations performed by the compiler used to build Xen. If the compiler generates (a) a single 64-bit write, or (b) a series of read-modify-write operations which are in the same order as the source code, the hypervisor is not vulnerable. For example, in one test build with gcc 8.3 with normal settings, the compiler generated multiple (unlocked) read-modify-write operations in source code order, which did *not* constitute a vulnerability. We have not been able to survey compilers; consequently we cannot say which compiler(s) might produce vulnerable code (with which code generation options). The code clearly violates the C rules. So we have chosen to issue this advisory. MITIGATION ========== Running only PV guests will avoid this vulnerability. Switching to shadow paging (e.g. using the "hap=0" xl domain domain configuration file parameter) will avoid exposing the vulnerability to those guests. Manual inspection of the generated assembly code might allow a suitably qualified person to say that a particular build is not vulnerable. There is no less broad mitigation. CREDITS ======= This issue was discovered by Jan Beulich of SUSE. For patch 1: Reviewed-by: Roger Pau Monné For patch 2: From: Roger Pau Monné Reported-by: Jan Beulich Signed-off-by: Roger Pau Monné RESOLUTION ========== Applying the appropriate pair of attached patches resolves this issue. Note that patches for released versions are generally prepared to apply to the stable branches, and may not apply cleanly to the most recent release tarball. Downstreams are encouraged to update to the tip of the stable branch before applying these patches. xsa328/xsa328-?.patch xen-unstable xsa328/xsa328-4.13-?.patch Xen 4.13.x xsa328/xsa328-4.12-?.patch Xen 4.12.x xsa328/xsa328-4.11-?.patch Xen 4.11.x, Xen 4.10.x xsa328/xsa328-4.9-?.patch Xen 4.9.x $ sha256sum xsa328* xsa328*/* 61ceb3d039c3ebb06f480a17593b367b01e7c1e5cc3669d77caecb704fbc7071 xsa328.meta cae53f7e6c46fe245790036279bc50eaa10e4271790e871ad8a7d446629b2e12 xsa328/xsa328-1.patch d61354a992869451cd7a3c92254672b5e253d1a994135cf9b4a5c784be0a07ef xsa328/xsa328-2.patch 018412fba6f153c1d6b03fc2fa6f3ac381060efe6a8651404462028d24c830a8 xsa328/xsa328-4.9-1.patch f3deb26e0ce27c385ab16065a0ba67b86a228afd949c0a6a78b9d48366fc2554 xsa328/xsa328-4.9-2.patch a600ecef784485e8608cd4549f756ffa24705747a4d876147f9ba64fff118580 xsa328/xsa328-4.11-1.patch f3deb26e0ce27c385ab16065a0ba67b86a228afd949c0a6a78b9d48366fc2554 xsa328/xsa328-4.11-2.patch d608921359e561f9c594c9f8f7ee02432518a229ecea638d472ab91227d705ec xsa328/xsa328-4.12-1.patch a51162c019e7e6ed394faa7d40c932456059b7b76a784dc7886dd0a47c43da0b xsa328/xsa328-4.12-2.patch 51a41fae885aed40839887da473e0c8ab4c4d897a121f5fac2cc3c6c0188d6d2 xsa328/xsa328-4.13-1.patch a51162c019e7e6ed394faa7d40c932456059b7b76a784dc7886dd0a47c43da0b xsa328/xsa328-4.13-2.patch $ DEPLOYMENT DURING EMBARGO ========================= Deployment of the patches and/or mitigations described above (or others which are substantially similar) is permitted during the embargo, even on public-facing systems with untrusted guest users and administrators. But: Distribution of updated software is prohibited (except to other members of the predisclosure list). Predisclosure list members who wish to deploy significantly different patches and/or mitigations, please contact the Xen Project Security Team. (Note: this during-embargo deployment notice is retained in post-embargo publicly released Xen Project advisories, even though it is then no longer applicable. This is to enable the community to have oversight of the Xen Project Security Team's decisionmaking.) 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d=xen.org; s=20200302mail; h=Date:Message-Id:Subject:CC:From:To:MIME-Version: Content-Transfer-Encoding:Content-Type:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=ZWlDk5b1NVC6EET/cOV6YdvAXsB2RSRQIeRlFabmc9s=; b=GgqsbibzuG1G6WuLD3aoi4YSAp CjXkwfoYWDV6HljfvN+b7aNhE7/UdBrnvT9OiTcCJjg2aPjZ0cCjEm/JQe8l9gr09bgN2gzOmrwrd 3VZSPQu6H1vt2jCQYXA315Wl30kQ0N9n2at3b5UtwEefe7HW4vVYLnsDPmbDVTxw6CIc=; Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsmde-0002uU-Dd; Tue, 07 Jul 2020 12:23:54 +0000 Received: from iwj by xenbits.xenproject.org with local (Exim 4.92) (envelope-from ) id 1jsmde-00040K-Bc; Tue, 07 Jul 2020 12:23:54 +0000 Content-Type: multipart/mixed; boundary="=separator"; charset="utf-8" Content-Transfer-Encoding: binary MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) To: xen-announce@lists.xen.org, xen-devel@lists.xen.org, xen-users@lists.xen.org, oss-security@lists.openwall.com From: Xen.org security team Subject: Xen Security Advisory 327 v3 (CVE-2020-15564) - Missing alignment check in VCPUOP_register_vcpu_info Message-Id: Date: Tue, 07 Jul 2020 12:23:54 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "Xen.org security team" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --=separator Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Xen Security Advisory CVE-2020-15564 / XSA-327 version 3 Missing alignment check in VCPUOP_register_vcpu_info UPDATES IN VERSION 3 ==================== Public release. ISSUE DESCRIPTION ================= The hypercall VCPUOP_register_vcpu_info is used by a guest to register a shared region with the hypervisor. The region will be mapped into Xen address space so it can be directly accessed. On Arm, the region is accessed with instructions which require a specific alignment. Unfortunately, there is no check that the address provided by the guest will be correctly aligned. As a result, a malicious guest could cause a hypervisor crash by passing a misaligned address. IMPACT ====== A malicious guest administrator may cause a hypervisor crash, resulting in a Denial of Service (DoS). VULNERABLE SYSTEMS ================== All Xen versions are vulnerable. Only Arm systems are vulnerable. x86 systems are not affected. MITIGATION ========== There is no mitigation. CREDITS ======= This issue was discovered by Julien Grall of Amazon. RESOLUTION ========== Applying the attached patch resolves this issue. Note that patches for released versions are generally prepared to apply to the stable branches, and may not apply cleanly to the most recent release tarball. Downstreams are encouraged to update to the tip of the stable branch before applying these patches. xsa327.patch Xen 4.9 - xen-unstable $ sha256sum xsa327* f046eefcc1368708bd1fafc88e063d3dbc5c4cdb593d68b3b04917c6cdb7bcb5 xsa327.meta 1d057695d5b74ce2857204103e943caeaf773bc4fb9d91ea78016e01a9147ed7 xsa327.patch $ DEPLOYMENT DURING EMBARGO ========================= Deployment of the patch and/or mitigations described above (or others which are substantially similar) is permitted during the embargo, even on public-facing systems with untrusted guest users and administrators. But: Distribution of updated software is prohibited (except to other members of the predisclosure list). Predisclosure list members who wish to deploy significantly different patches and/or mitigations, please contact the Xen Project Security Team. (Note: this during-embargo deployment notice is retained in post-embargo publicly released Xen Project advisories, even though it is then no longer applicable. This is to enable the community to have oversight of the Xen Project Security Team's decisionmaking.) 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Thu, 9 Jul 2020 11:45:46 +0300 (EEST) To: xen-users@lists.xenproject.org From: Casper Subject: Debian 10, xen 4.11 reliability Message-ID: Date: Thu, 9 Jul 2020 11:45:47 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hello, I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 kernel with Xen 4.1.4 on some servers still work very reliable with no problems, only wanted to change new hard discs pushed me to install new Debian 10 with Xen packages to newer version. Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen 4.11.4-pre all crashes in 1-2weeks. In start I was blaming HW, but now it repeats in old reliable servers too. My config is I have 2-3 hard discs per server node and RAID1 with sw md raid, it crashes with md lost access for disc. After reboot all works as it should. I tested different HW and discs, all the same problems. Loads are no big, just few testing DomU nodes. Any suggestion? I`m currently running latest Debian kernel 4.19 was thinking to downgrade to test different kernel. Or problem with Debian Xen package as it not so popular anymore? Any suggestion what to test to figure out problem? Sincerely, Casper From xen-users-bounces@lists.xenproject.org Thu Jul 09 08:55:09 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 09 Jul 2020 08:55:09 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtSKU-0006Rb-Ke; Thu, 09 Jul 2020 08:54:54 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtSKT-0006RV-6J for xen-users@lists.xenproject.org; Thu, 09 Jul 2020 08:54:53 +0000 X-Inumbo-ID: d9f4aa58-c1c1-11ea-bca7-bc764e2007e4 Received: from mail-io1-xd2b.google.com (unknown [2607:f8b0:4864:20::d2b]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id d9f4aa58-c1c1-11ea-bca7-bc764e2007e4; Thu, 09 Jul 2020 08:54:52 +0000 (UTC) Received: by mail-io1-xd2b.google.com with SMTP id k23so1486001iom.10 for ; Thu, 09 Jul 2020 01:54:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=HyyUnliBJ/yc6++8k228JiMs+gYKcSRiJLBnzXYmQQI=; b=qWVC4EJ2B1ba/v3oKPgj2fBSDdZSdBdKJ3yd/+sNDVM6hV3pDgJQjEBbFIXG2zSO5E oLI0dGmKlqlulLAUbTeHYEYrt0Jj1nSkzs1SUa70Onl3iU+JZKk3uGuuLaHIO4VdVKyo iaRk5Y7U7+SSOzpXc3hYNCCqgCuQJB9+BsIOGYXMFiCsJtdNfX1RvH0fDEI6y3ffI5rL xy7BLGca0V6j4efa25zysEC5QC1YHLDRAWhdKc5SZzkDNaCYT9jFBEryJZAb57aSbF/i +oRE8/mJ5e573mQF/ArwNR0tl1hgHrH/pzIs8w/DyCjjAYmJwxx5USVI8Bg/x8g+aV64 pnrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=HyyUnliBJ/yc6++8k228JiMs+gYKcSRiJLBnzXYmQQI=; b=IKqRA6R8G0LHVyj4xznTtt0PeKJS0D/w1KLy1EzuFovnIW51y0sCM11QQAUrJk4M/z FuvNSOODHkNascuENZtkQ6ksnh6RSPc1z7/kZpx4JD0UdxCG4lFWL1wynwqBF8TVqorU ZgyU9aDE7oIdn3WJGy6zeTTNaRfpZgM3biPh62osZldl4kX2kC+rwwcIe+TKk/CF6wtv Mn+h8+pYJPFShqBToLC3O18oZTmGRcgDGwZ5SfjO4LzQ9ySy+IqAmHCqm5F5W8tYja1T YO9NfoaCbm+Cw9UIoCLv4BMYA/o2D5mSDKYNrboskEXSIRPk6CrJxdBhu/4l11g5oDE/ M5qQ== X-Gm-Message-State: AOAM533Y0guQ06G+lSBPc8/bJK4OZumbPq6RfIDKkbB78Ro1gZxZHXEM vlHBS9A8EVteRENNW365uqlkQO/AFBEZr86iZCYk1jFP X-Google-Smtp-Source: ABdhPJzV2SbEtCnsVaiUGi/J9isXy3i9F5SmENWEeug7n6d1RL5scnX8qtPhbEfWIadcc8PVM0ilUa1kcHHfZ/UrJck= X-Received: by 2002:a02:1a06:: with SMTP id 6mr72417525jai.8.1594284891468; Thu, 09 Jul 2020 01:54:51 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Goran Date: Thu, 9 Jul 2020 10:54:41 +0200 Message-ID: Subject: Re: Debian 10, xen 4.11 reliability To: Casper Content-Type: multipart/alternative; boundary="000000000000a076b005a9fe603b" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xenproject.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --000000000000a076b005a9fe603b Content-Type: text/plain; charset="UTF-8" Get rid of Systemd. Use Devuan. Works like a charm. [ send by mobile device ] Casper schrieb am Do., 9. Juli 2020, 10:50: > Hello, > > I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 kernel with > Xen 4.1.4 on some servers still work very reliable with no problems, > only wanted to change new hard discs pushed me to install new Debian 10 > with Xen packages to newer version. > > Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen > 4.11.4-pre all crashes in 1-2weeks. In start I was blaming HW, but now > it repeats in old reliable servers too. My config is I have 2-3 hard > discs per server node and RAID1 with sw md raid, it crashes with md lost > access for disc. After reboot all works as it should. > > I tested different HW and discs, all the same problems. > Loads are no big, just few testing DomU nodes. > Any suggestion? I`m currently running latest Debian kernel 4.19 was > thinking to downgrade to test different kernel. > Or problem with Debian Xen package as it not so popular anymore? > Any suggestion what to test to figure out problem? > > Sincerely, > Casper > > --000000000000a076b005a9fe603b Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Get rid of Systemd. Use Devuan. Works like a charm.
[ send by mobile device ]

Ca= sper <kl@os.lv> schrieb am Do., 9. Ju= li 2020, 10:50:
Hello,

I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 kernel with Xen 4.1.4 on some servers still work very reliable with no problems,
only wanted to change new hard discs pushed me to install new Debian 10 with Xen packages to newer version.

Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen
4.11.4-pre all crashes in 1-2weeks. In start I was blaming HW, but now
it repeats in old reliable servers too. My config is I have 2-3 hard
discs per server node and RAID1 with sw md raid, it crashes with md lost access for disc. After reboot all works as it should.

I tested different HW and discs, all the same problems.
Loads are no big, just few testing DomU nodes.
Any suggestion? I`m currently running latest Debian kernel 4.19 was
thinking to downgrade to test different kernel.
Or problem with Debian Xen package as it not so popular anymore?
Any suggestion what to test to figure out problem?

Sincerely,
Casper

--000000000000a076b005a9fe603b-- From xen-users-bounces@lists.xenproject.org Thu Jul 09 09:48:44 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 09 Jul 2020 09:48:44 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtT9W-0002aF-JL; Thu, 09 Jul 2020 09:47:38 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtT9V-0002aA-Gr for xen-users@lists.xenproject.org; Thu, 09 Jul 2020 09:47:37 +0000 X-Inumbo-ID: 37526364-c1c9-11ea-8eb0-12813bfff9fa Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 37526364-c1c9-11ea-8eb0-12813bfff9fa; Thu, 09 Jul 2020 09:47:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:To:Subject:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=mHCdSoaum50aMBf0VZO//qM1LXrWUWZe/pkbZwuqa/Y=; b=BnWRK+e5vF4bFU71ZGEaHCW+us HAq4nlo2/CTUMVYy3t4haMjyRRj/aDmnp3pGD0GLl9O2BDnxuNZAHEydZ7Emj2zu0gUx8tJAuQ0eH 3tRgXrfbniuye3bBD3d8Bt0CcF/5WYSjzKlCLb5nSIAC6evg17tvh2AbjPeA3VY2EI7Y=; Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtT9S-000356-QO for xen-users@lists.xenproject.org; Thu, 09 Jul 2020 09:47:34 +0000 Received: from 54-240-197-233.amazon.com ([54.240.197.233] helo=a483e7b01a66.ant.amazon.com) by xenbits.xenproject.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1jtT9S-0000tT-Jl for xen-users@lists.xenproject.org; Thu, 09 Jul 2020 09:47:34 +0000 Subject: Re: Xen Live patching vs Live-Updating Xen. To: xen-users@lists.xenproject.org References: From: Julien Grall Message-ID: <4b6ec2e1-e204-6aaa-329d-593162d045f6@xen.org> Date: Thu, 9 Jul 2020 10:47:33 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 05/07/2020 22:45, peter.jac@protonmail.com wrote: > Hello, Hello, > Xen Live patching is Live-Updating Xen or they are difference? They are different. In the case of Live patching, you are replacing small portion of the hypervisor with a new version. This works quite well when the changes are not complex and doesn't require to mutate your data. In the case of live-update, the existing hypervisor will be replaced by a new version without requiring a restart of your VMs. This would allow you to upgrade between stable release (and possibly major) versions of Xen. So far, only live-patching is available upstream. But there is plan to get live-update support for Xen. Best regards, -- Julien Grall From xen-users-bounces@lists.xenproject.org Thu Jul 09 11:44:40 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 09 Jul 2020 11:44:40 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtUxM-000492-CC; Thu, 09 Jul 2020 11:43:12 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtUxK-00048x-8h for xen-users@lists.xenproject.org; Thu, 09 Jul 2020 11:43:10 +0000 X-Inumbo-ID: 597f676a-c1d9-11ea-8eb6-12813bfff9fa Received: from mamuts.risinajumi.lv (unknown [212.70.177.194]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 597f676a-c1d9-11ea-8eb6-12813bfff9fa; Thu, 09 Jul 2020 11:43:04 +0000 (UTC) Received: by mamuts.risinajumi.lv (Postfix, from userid 65534) id 155A06AFC3; Thu, 9 Jul 2020 14:46:33 +0300 (EEST) X-Spam-Checker-Version: SpamAssassin 3.2.2 (2007-07-23) on mamuts.risinajumi.lv X-Spam-Level: * X-Spam-Status: No, score=1.4 required=9.5 tests=FH_DATE_PAST_20XX autolearn=no version=3.2.2 Received: from smtp.risinajumi.lv (smtp.risinajumi.lv [212.70.177.201]) by mamuts.risinajumi.lv (Postfix) with ESMTP id AB8556AFC1 for ; Thu, 9 Jul 2020 14:46:32 +0300 (EEST) Received: from [192.168.43.214] (unknown [80.89.78.44]) by smtp.risinajumi.lv (Postfix) with ESMTPA id CCBD1F1251 for ; Thu, 9 Jul 2020 14:43:02 +0300 (EEST) Subject: Re: Debian 10, xen 4.11 reliability To: xen-users@lists.xenproject.org References: From: Casper Message-ID: Date: Thu, 9 Jul 2020 14:43:02 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" BSD not bad idea, but it would be interesting to find problem. I`m curious to go to different kernel/xen version to test problem. On 09.07.20 11:55, Goran wrote: > Or take some BSD... > > [ send by mobile device ] > > Goran > > schrieb am Do., 9. Juli 2020, 10:54: > > Get rid of Systemd. Use Devuan. Works like a charm. > > [ send by mobile device ] > > Casper > schrieb am Do., 9. Juli 2020, 10:50: > > Hello, > > I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 > kernel with > Xen 4.1.4 on some servers still work very reliable with no > problems, > only wanted to change new hard discs pushed me to install new > Debian 10 > with Xen packages to newer version. > > Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen > 4.11.4-pre all crashes in 1-2weeks. In start I was blaming HW, > but now > it repeats in old reliable servers too. My config is I have 2-3 > hard > discs per server node and RAID1 with sw md raid, it crashes with > md lost > access for disc. After reboot all works as it should. > > I tested different HW and discs, all the same problems. > Loads are no big, just few testing DomU nodes. > Any suggestion? I`m currently running latest Debian kernel 4.19 was > thinking to downgrade to test different kernel. > Or problem with Debian Xen package as it not so popular anymore? > Any suggestion what to test to figure out problem? > > Sincerely, > Casper > From xen-users-bounces@lists.xenproject.org Thu Jul 09 14:43:07 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 09 Jul 2020 14:43:07 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtXjt-0001ze-7D; Thu, 09 Jul 2020 14:41:29 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtXjs-0001zZ-I9 for xen-users@lists.xenproject.org; Thu, 09 Jul 2020 14:41:28 +0000 X-Inumbo-ID: 44f40bb6-c1f2-11ea-8496-bc764e2007e4 Received: from mail.prgmr.com (unknown [2605:2700:0:5::4713:9506]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 44f40bb6-c1f2-11ea-8496-bc764e2007e4; Thu, 09 Jul 2020 14:41:27 +0000 (UTC) Received: from [192.168.2.47] (c-174-62-72-237.hsd1.ca.comcast.net [174.62.72.237]) (Authenticated sender: srn) by mail.prgmr.com (Postfix) with ESMTPSA id 665107200C2; Thu, 9 Jul 2020 10:41:26 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.prgmr.com 665107200C2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=prgmr.com; s=default; t=1594305686; bh=MlpN8vQP0en46Nv+C0mxKQ5fVf/VeiKaCCU6O9aHq2o=; h=Subject:To:References:From:Date:In-Reply-To:From; b=HNnkRU+6AtIlqgo3DaeY/kNEleWc7jaFogEgZSyahf0RPfbNP0QFma4oufoIuLRFj M6ikvHdb3VKZhueuITCSup7+6Ef/WgSeNR0+wxGFY3r3J+LsoRjLfVS2JWTOguktPH X26G73vhdBca69pV3h20zZyGOhGnP1WJAdgKB1RM= Subject: Re: Debian 10, xen 4.11 reliability To: Casper , xen-users@lists.xenproject.org References: From: Sarah Newman Message-ID: <0ffed2ed-d6a2-35f4-abe4-8ced95277d0a@prgmr.com> Date: Thu, 9 Jul 2020 07:41:25 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 7/9/20 1:45 AM, Casper wrote: > Hello, > > I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 kernel with Xen 4.1.4 on some servers still work very reliable with no problems, only > wanted to change new hard discs pushed me to install new Debian 10 with Xen packages to newer version. > > Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen 4.11.4-pre all crashes in 1-2weeks. In start I was blaming HW, but now it repeats in > old reliable servers too. My config is I have 2-3 hard discs per server node and RAID1 with sw md raid, it crashes with md lost access for disc. After > reboot all works as it should. > > I tested different HW and discs, all the same problems. > Loads are no big, just few testing DomU nodes. > Any suggestion? I`m currently running latest Debian kernel 4.19 was thinking to downgrade to test different kernel. > Or problem with Debian Xen package as it not so popular anymore? > Any suggestion what to test to figure out problem? Kernel messages and all the kernel versions you've tried since Debian 7 please? We're trying to track down some other issues with debian guests; maybe they are the same root cause. --Sarah From xen-users-bounces@lists.xenproject.org Thu Jul 09 17:11:26 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 09 Jul 2020 17:11:26 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jta3I-0005vm-HY; Thu, 09 Jul 2020 17:09:40 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jta3G-0005vU-Pl for xen-users@lists.xenproject.org; Thu, 09 Jul 2020 17:09:38 +0000 X-Inumbo-ID: f5802c6c-c206-11ea-bb8b-bc764e2007e4 Received: from sonic305-2.consmr.mail.bf2.yahoo.com (unknown [74.6.133.41]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id f5802c6c-c206-11ea-bb8b-bc764e2007e4; Thu, 09 Jul 2020 17:09:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1594314573; bh=trrcQUgQAifnMBO3TKpcFwdpml8Fm9HdpLtTju4GKx4=; h=Date:From:Reply-To:To:Subject:References:From:Subject; b=GBNbYOeZXnLXUgPyCAbh5FEPKYevxWq1Bn8+iifsROKdjHt9zMyG/UaB2cAA3WIsF5Np2HND+aBslXqzkRk+zf2puXU1cEyEVZgLfwCAhfPBTWJeBublA6heO+0SSCOr3HaNzDMuSqiBQmklqssKThN9Rd+YQInIKloASvf6tbFG7vxfC3/paZ0L7SAV2ewGJ8ROOT7QF+OO6chM6FvY/QVae62ZTHDcNT7kNM7tN50G9RKVGRw9UasgXECnTgBQq50qVhEXqCG7Pt57QoksIdimciNaVH26Npz0BDZBg2d/XVOzjYDHXhgFWsn+8FCX1m8HsYLu2DRxuxcwo63pOg== X-YMail-OSG: V2wGrWQVM1nPgmiYxJQbX1WC21frsq9ctBp9KB6Xxi4Bh_M_K9l.CLSof1nVALD HvkpIF2an6TkeQEnWCwm.hiq.N8cTVKNrXLR1NpJkE8RgtCMdHaR4yYwVqw4JWOmqlgTabChnpzJ 601jCBiRu9tDFSj0Y2pt3CxUb7WWo.Mm7tDt4s.CUZzAgiAkygYfAWCmMALf4vceBOXUQQVZa83E dE9M6pL8JYuhct7P_Db79O8kKg4YLrfnsP63jjXZ7H7yv1JlzQS3Im5YPKFTPT5ihBUycL.KlHUZ Unr2x_PMoPbnwWz2tYzaSItAEgs3COzFHszLZIvFNG2mCzZ0LodB8JznU9BPbrqpaaxWQLm9IOzQ R1q2sqGXwP7uJ1tVL09BGC0AZcJG74KDPvFHVqSsSXshrCoNVRVlriLGMpEAje81UFsOFT8fDRPh fSvHTa5rKWcSrpnSVZ69SGbOOdryXchytkvZ9EDcQg540yGxP.NTrzTKbvfIvaetSvqst0qz8PIB A2_tGefplXFohAOkDh0dmXjRALBMOhJx94.BBk_l203sPnuGXpn0Tlg1q7MlWxLq5riBPNfTaNZs B6IHR3DhT3QCVedviY_CQcZWiLBnAq1X7H3_oyHpM6lg6JdJxvrCZWlLNL7jpDvlO5_Be.1zGOm8 WIg4TxtSMbD1ULEqK9HPwITBgR5Qky8KTuoKHLGLPVRbwVBBl7xBxsBMVWjwITmon0wpkjkjJwIw OL_hEMYoXcWOr0.GjXCST2IB24WsXkcm.NYYUkrrj9YivtvYlETC_.hq4WZdJ1Io141qOnhGtWVk cm4luOJBfgF3Ptm5rYCfamJJCHrJybo_SqkE_7KsHgXoimUcHwauvubnJcebA_amRrDoLYSSU7tE 5KgEuW.0lQBVPcsQJNg03gUTBqJ2HGV_s1ztYZvPr_bch5V3GWoGD77eLEdiNxIvA1RUZAg1rPXV 4CeKQ3abRlQxUa8kNd_sMAlBiHkr6tLAYEzgLUFBGOiIexHM6Dx9tVDBxZX1dIQ7XJvqR.rPk7f5 4VwbIZ6k26z6sbX2jv55e6yv0KDC9hESHRgOMh44H28zyqJ766vnV31Pbkixyl3x2HKhjheBeBl7 zYCd1uTJSz3BXof2TzO4HGwwCtfkuxfvb8ArbOitvtZCijLswkwaD42DX6Q09a_q8Qnd12OBptlF 2xg3dNeHLJ067A4sB9CT5RWkOjz_MQQ3DkMHGhLaSdvBUTvrOystfK8JbbCm.k6z.szWBN7mJ8x7 fQaN6TJ2GzY8lArko5OLAbnF_WlNF2w6uPcqSIXeXjr6YGSGgoJzNHRTl2s_0_1K.MMOk84tO7n7 m8g746evepjCHzsKx6q9k6TLTxp35I.dkIcxrn2ojxEsN77vVwpFMtE8HoQ-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic305.consmr.mail.bf2.yahoo.com with HTTP; Thu, 9 Jul 2020 17:09:33 +0000 Date: Thu, 9 Jul 2020 17:09:30 +0000 (UTC) From: Jason Long To: Xen-users , "mirageos-devel@lists.xenproject.org" Message-ID: <784251130.2623344.1594314570469@mail.yahoo.com> Subject: MirageOS and Unikernel. MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_2623343_771106849.1594314570468" References: <784251130.2623344.1594314570469.ref@mail.yahoo.com> X-Mailer: WebService/1.1.16197 YahooMailAndroidMobile YMobile/1.0 (com.yahoo.mobile.client.android.mail/6.8.3; Android/7.1.1; NMF26F; bbc100; BlackBerry; BBC100-1; 5.16; 1184x720; ) Content-Length: 886 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: "hack3rcon@yahoo.com" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" ------=_Part_2623343_771106849.1594314570468 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hello,Is it true that the Docker acquired the Unikernel technology and MirageOS?Thus, this technology is under Docker control and Xen can't use Unikernel without Docker license? Cheers. ------=_Part_2623343_771106849.1594314570468 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit Hello,
Is it true that the Docker acquired the Unikernel technology and MirageOS?
Thus, this technology is under Docker control and Xen can't use Unikernel without Docker license?

Cheers.
------=_Part_2623343_771106849.1594314570468-- From xen-users-bounces@lists.xenproject.org Thu Jul 09 22:12:04 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 09 Jul 2020 22:12:04 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jteko-0005vM-HO; Thu, 09 Jul 2020 22:10:54 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtekm-0005vH-QX for xen-users@lists.xenproject.org; Thu, 09 Jul 2020 22:10:52 +0000 X-Inumbo-ID: 0ce49206-c231-11ea-bb8b-bc764e2007e4 Received: from mail-ay.bbox.fr (unknown [2001:860:e200:0:c000::a]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 0ce49206-c231-11ea-bb8b-bc764e2007e4; Thu, 09 Jul 2020 22:10:51 +0000 (UTC) Received: from mail.jppozzi.dyndns.org (176-172-74-140.abo.bbox.fr [176.172.74.140]) by mail-ay.bbox.fr (Postfix) with ESMTP id 4AEA938; Fri, 10 Jul 2020 00:10:49 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mail.jppozzi.dyndns.org (Postfix) with ESMTP id D992F3E5AF6; Fri, 10 Jul 2020 00:10:48 +0200 (CEST) Received: from mail.jppozzi.dyndns.org ([127.0.0.1]) by localhost (mail.jppozzi.dyndns.org [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id CP86V-nVzPnP; Fri, 10 Jul 2020 00:10:48 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mail.jppozzi.dyndns.org (Postfix) with ESMTP id 8728C3E5AF7; Fri, 10 Jul 2020 00:10:48 +0200 (CEST) X-Virus-Scanned: amavisd-new at mail.jppozzi.dyndns.org Received: from mail.jppozzi.dyndns.org ([127.0.0.1]) by localhost (mail.jppozzi.dyndns.org [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id TR2L_QZddHIJ; Fri, 10 Jul 2020 00:10:48 +0200 (CEST) Received: from mail.jppozzi.dyndns.org (tmail.jpp.fr [192.168.2.21]) by mail.jppozzi.dyndns.org (Postfix) with ESMTP id 5C8DB3E5AF6; Fri, 10 Jul 2020 00:10:48 +0200 (CEST) Date: Fri, 10 Jul 2020 00:10:48 +0200 (CEST) From: JP P To: Sarah Newman Message-ID: <67309480.494.1594332648237.JavaMail.zimbra@jppozzi.dyndns.org> In-Reply-To: <0ffed2ed-d6a2-35f4-abe4-8ced95277d0a@prgmr.com> References: <0ffed2ed-d6a2-35f4-abe4-8ced95277d0a@prgmr.com> Subject: Re: Debian 10, xen 4.11 reliability MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [192.168.2.8] X-Mailer: Zimbra 8.8.15_GA_3953 (ZimbraWebClient - GC79 (Linux)/8.8.15_GA_3953) Thread-Topic: Debian 10, xen 4.11 reliability Thread-Index: EwOQC7p6Ktf6hTklUCKhPMswOlqDAQ== X-VADE-SPAMSTATE: clean X-VADE-SPAMSCORE: 0 X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduiedrvddtgddtjecutefuodetggdotefrodftvfcurfhrohhfihhlvgemuceuqfgfjgfifgfgufdpucfqfgfvpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedttdenucenucfjughrpeffhffvkfgjfhfugggtgfhiofhtsehtqhgttdertdejnecuhfhrohhmpeflrfcurfcuoehjphhpsehjphhpohiiiihirdguhihnughnshdrohhrgheqnecuggftrfgrthhtvghrnhepuedugeeftdevfeegtdegjeejfeekleefteelhfelteeiieetffejfeehiefhudegnecukfhppedujeeirddujedvrdejgedrudegtddpudelvddrudeikedrvddrkeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedujeeirddujedvrdejgedrudegtddphhgvlhhopehmrghilhdrjhhpphhoiiiiihdrugihnhgunhhsrdhorhhgpdhmrghilhhfrhhomheplffrucfruceojhhpphesjhhpphhoiiiiihdrugihnhgunhhsrdhorhhgqedprhgtphhtthhopeigvghnqdhushgvrhhssehlihhsthhsrdigvghnphhrohhjvggtthdrohhrghdprhgtphhtthhopehklhesohhsrdhlvhdprhgtphhtthhopehsrhhnsehprhhgmhhrrdgtohhm X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Casper , xen-users@lists.xenproject.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hello, I have exactly the same problem with XEN 4.11 and Buster, Xen does not star= t (it even does not recognize the boot fidk !) and never detects the RAID 1 disks. I cannot boot with Xen, the same Kernel boots perfectly OK without XEN and = all RAID disks are OK. I don't find any clue on Internet and can no more use Xen (I used it since = 2009 with no problems ...). Regards JP P ----- Mail original ----- De: "Sarah Newman" =C3=80: "Casper" , xen-users@lists.xenproject.org Envoy=C3=A9: Jeudi 9 Juillet 2020 16:41:25 Objet: Re: Debian 10, xen 4.11 reliability On 7/9/20 1:45 AM, Casper wrote: > Hello, >=20 > I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 kernel with = Xen 4.1.4 on some servers still work very reliable with no problems, only= =20 > wanted to change new hard discs pushed me to install new Debian 10 with X= en packages to newer version. >=20 > Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen 4.11.4-= pre all crashes in 1-2weeks. In start I was blaming HW, but now it repeats = in=20 > old reliable servers too. My config is I have 2-3 hard discs per server n= ode and RAID1 with sw md raid, it crashes with md lost access for disc. Aft= er=20 > reboot all works as it should. >=20 > I tested different HW and discs, all the same problems. > Loads are no big, just few testing DomU nodes. > Any suggestion? I`m currently running latest Debian kernel 4.19 was think= ing to downgrade to test different kernel. > Or problem with Debian Xen package as it not so popular anymore? > Any suggestion what to test to figure out problem? Kernel messages and all the kernel versions you've tried since Debian 7 ple= ase? We're trying to track down some other issues with debian guests; maybe they= are the same root cause. --Sarah From xen-users-bounces@lists.xenproject.org Thu Jul 09 22:18:48 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 09 Jul 2020 22:18:48 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtesE-0006Br-FY; Thu, 09 Jul 2020 22:18:34 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtesC-0006Bl-Up for xen-users@lists.xenproject.org; Thu, 09 Jul 2020 22:18:33 +0000 X-Inumbo-ID: 1f24b224-c232-11ea-bca7-bc764e2007e4 Received: from mail.prgmr.com (unknown [2605:2700:0:5::4713:9506]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 1f24b224-c232-11ea-bca7-bc764e2007e4; Thu, 09 Jul 2020 22:18:31 +0000 (UTC) Received: from [192.168.2.47] (c-174-62-72-237.hsd1.ca.comcast.net [174.62.72.237]) (Authenticated sender: srn) by mail.prgmr.com (Postfix) with ESMTPSA id F2633720128; Thu, 9 Jul 2020 18:18:30 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.prgmr.com F2633720128 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=prgmr.com; s=default; t=1594333111; bh=ep39xVjVBI9AR8rGxG9yJe3IoyMEVVwnlUgRK2kSafo=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=irrvA3PPTFXOy1QLRQFYytSfwyVkn6rdND7uFKtETpu58veG4dTIOq2173GpnlAP0 RBqqpBBPrS+NBhk5ownqYOTYa9mYDZrPsnkA5U5pOwtJOmeS097yrApCkQg8pmH1Ec ts9QIO0NZxySbtZPalh4u0eyiKZ3N8+kiIm2QtHI= Subject: Re: Debian 10, xen 4.11 reliability To: JP P References: <0ffed2ed-d6a2-35f4-abe4-8ced95277d0a@prgmr.com> <67309480.494.1594332648237.JavaMail.zimbra@jppozzi.dyndns.org> From: Sarah Newman Message-ID: <974ce272-49a6-3cd4-3aaf-5efc766d6910@prgmr.com> Date: Thu, 9 Jul 2020 15:18:30 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <67309480.494.1594332648237.JavaMail.zimbra@jppozzi.dyndns.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Casper , xen-users@lists.xenproject.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Please post bottom or inline On 7/9/20 3:10 PM, JP P wrote: > > ----- Mail original ----- > De: "Sarah Newman" > À: "Casper" , xen-users@lists.xenproject.org > Envoyé: Jeudi 9 Juillet 2020 16:41:25 > Objet: Re: Debian 10, xen 4.11 reliability > > On 7/9/20 1:45 AM, Casper wrote: >> Hello, >> >> I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 kernel with Xen 4.1.4 on some servers still work very reliable with no problems, only >> wanted to change new hard discs pushed me to install new Debian 10 with Xen packages to newer version. >> >> Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen 4.11.4-pre all crashes in 1-2weeks. In start I was blaming HW, but now it repeats in >> old reliable servers too. My config is I have 2-3 hard discs per server node and RAID1 with sw md raid, it crashes with md lost access for disc. After >> reboot all works as it should. >> >> I tested different HW and discs, all the same problems. >> Loads are no big, just few testing DomU nodes. >> Any suggestion? I`m currently running latest Debian kernel 4.19 was thinking to downgrade to test different kernel. >> Or problem with Debian Xen package as it not so popular anymore? >> Any suggestion what to test to figure out problem? > > Kernel messages and all the kernel versions you've tried since Debian 7 please? > > We're trying to track down some other issues with debian guests; maybe they are the same root cause. > > --Sarah > > Hello, > > I have exactly the same problem with XEN 4.11 and Buster, Xen does not start (it even does not recognize the boot fidk !) and > never detects the RAID 1 disks. > I cannot boot with Xen, the same Kernel boots perfectly OK without XEN and all RAID disks are OK. > I don't find any clue on Internet and can no more use Xen (I used it since 2009 with no problems ...). > > Regards > > JP P I don't think this is the same issue. It's much different to have a problem come up several days after boot versus not booting at all. --Sarah From xen-users-bounces@lists.xenproject.org Fri Jul 10 08:41:22 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 10 Jul 2020 08:41:22 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtoZV-0000ld-Sq; Fri, 10 Jul 2020 08:39:53 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtoZU-0000lY-C8 for xen-users@lists.xenproject.org; Fri, 10 Jul 2020 08:39:52 +0000 X-Inumbo-ID: ebf006ae-c288-11ea-b7bb-bc764e2007e4 Received: from sonic315-15.consmr.mail.bf2.yahoo.com (unknown [74.6.134.125]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id ebf006ae-c288-11ea-b7bb-bc764e2007e4; Fri, 10 Jul 2020 08:39:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1594370391; bh=6BsF9RkSSikMjw/LHL8zdLBPTzFSRByQCYUwQh0D52w=; h=Date:From:Reply-To:To:In-Reply-To:References:Subject:From:Subject; b=GQCsGVKriAoGdXUdRQ3ePXqp6KR3yGBzs9ZqCD/7c+Y79eYXAbKFbl7l57wyhBOtXmLrr4W4jN92QU2amsl5SvYGgTAqjqmPw3Y+NITVVfHO0vxXW1mBxbVsAXm/w04Bf7XwZl2Qo+chqdap6KIHBDKwnsIi/vL5vEqvws4kj5pRfUch8KxJ4ydGffANVLDNZgaXdYhrZfOg3P8atqMD+Ih9xkwr5W4JVfXcbotUzs1AIvi9ieTXseNN8DLGpBwBMZvuQihDcuRWIBwgrCQReubFY0ollTCIxVK/1dWKSRgfPq4SD5lXzMhzn2RdqbfHmnJOvvms3gT3u8XFmDe23Q== X-YMail-OSG: Q3IFhmwVM1mcbYt6fKrAj.bbTJR8ewt5dsr.l_Rn0XZq34M5nPlORNc3AszG_XG suvNzfj5dPc9ZVe692cnBjiQmGOmQ2NnnktK66Hubmh_HKu5FXVKU_PWnCJbvgWfqaU1XCQLdJtF G2yoXGUYRErB17CNnOdpFSNhME6pgCwJOaKaNT.fqL2ppR1GjEsbMJ8.3ITToEZRNVCv6mDgnwNP htx7TEdsuD7DoUhCIOIm26HbTPCeWQtMLUw3eLJXeSrE.RbXbhmAHUS1DQsG7o40Kha9Uh107.RL xNtH4E0iOEo0hQhlWcvOsyJfDG5YymgypFOOpBKWO1GjW_9brOQdRqVkxgtd2LV.XC8xX3s7eQeN TvP3ZhcBYOegIe7E67XxyduO5ZIthsWZdja.7cY3QLKSs_BU5nLn_TNxvse7drkz.xrEypVGs09H 1vs9yFZB1BriWUCwJVk0lbXjYmBOauozhxdQOOBpKpnBzS1Cab2f91_wwLqSHivr7M7aK_oDlzLE QHmL06z6skG.bkvyhmul7WcVsQ16bCmPPk3s7OicHr1AFUeDofCz4P.2FdU_un217a1DpxiTej7o X32xCCLjQq_uaEFjt3pVn_nDTlD6SZ9uhd2RYfXvppyOpWAb422S0SYSlsiUQQ3VnVdzeaQ5T9tm abmDAZp3bfxFB40cr6ZZ9J6.X1g9QZJDwwT1h7jp.K3VK2Fc9eQSP66GGKs_F9LOLdOQvYm1G2pE PzJr1CzampePtnORNuG.ibu2C7NvPDU8N6wtXkr1YOTD5cYOtF7Mx2.in5qSb1KDMFarLl69I93B a37IR8nbi7ra6KFjwcH6M2RW1eBhVMizafpMsgtcO8DIhPkrECEGv6UdzrT7dv13giTAzdvovvq2 rKR7X5QmCZ8Zsyudsix9n3md1ST_sI7H1BkGU_p1LF.J4.d.Mc8QN2eCoR9VzsA5ZA8iLrdAw.VB O91qV2KeJMHK6SqrSOsl7gVr0CaymRyAfBMIDbmSyWDvWQH9TAOMuqyildogMb3T1bRQvU7yAzOI d8bi0sqVdOxTC0ToxRMZwNUFNnRkvTOVEVPc7FNV6TKjhePobd1wOPbv8m4nbzbrhQE5AJR5z5l0 ylVJ4iuUaEmfdx4bWOh36Ps5v0L.J_rbQ_qzqeLVg5CKyaHlgwnRXxl23bnCFbQ_THZFHHbi6S1G Hr5p_SBOCOl8jR4d.NCdDyeA65HDCLEEP7E4ypWZ7x5tDKFMDn2VVzyZuMfRgcWr_dA5cz3dV8VY JE3W10oip8LtuzHeT0ihT8v3klPSSr.nOKmDdn5lxBIJ29BEvTh9gt9FrsQj_5N2GCHFHEKQ45x2 69.k_JMH22meMhu3q_jYiEDqs0R1V4SdiSNP5lcLtRzCpzvJQ.AztvtLJJasayJUNmf4J3VRPPB9 fiK9niJk.NboqrrcghLpViQQmEFhn5j5.BchoWtd8IJ3Xd99NtGM9eh_xkKRQZxtBfGUyr5A7cYB ocDH2foTutsnqKM.wO2r2zmPDF4ED1xX1r1RID4sVutk5.gAbZQoFh3bbBXcpfVJMHoDxzbNQLre S1cK0sqTK6jdOoEtETChYaFtwd18PJMfibqyxpP_abNMqmG.pI6BZBSjOKiVt9QU_qBHf Received: from sonic.gate.mail.ne1.yahoo.com by sonic315.consmr.mail.bf2.yahoo.com with HTTP; Fri, 10 Jul 2020 08:39:51 +0000 Date: Fri, 10 Jul 2020 08:39:45 +0000 (UTC) From: Jason Long To: "hack3rcon@yahoo.com" , Xen-users , "mirageos-devel@lists.xenproject.org" Message-ID: <919347890.2880516.1594370385847@mail.yahoo.com> In-Reply-To: <784251130.2623344.1594314570469@mail.yahoo.com> References: <784251130.2623344.1594314570469.ref@mail.yahoo.com> <784251130.2623344.1594314570469@mail.yahoo.com> Subject: Re: MirageOS and Unikernel. MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_2880515_64391137.1594370385846" X-Mailer: WebService/1.1.16197 YahooMailAndroidMobile YMobile/1.0 (com.yahoo.mobile.client.android.mail/6.8.3; Android/7.1.1; NMF26F; bbc100; BlackBerry; BBC100-1; 5.16; 1184x720; ) Content-Length: 1127 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: "hack3rcon@yahoo.com" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" ------=_Part_2880515_64391137.1594370385846 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit The Unikernel system was a company that invented the Unikernel. When Docker bought it then it mean the Docker owned Unikernel technology.Docker is for Red Hat and Red Hat working on KVM, thus... Sent from Yahoo Mail on Android ------=_Part_2880515_64391137.1594370385846 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit The Unikernel system was a company that invented the Unikernel. When Docker bought it then it mean the Docker owned Unikernel technology.
Docker is for Red Hat and Red Hat working on KVM, thus...

------=_Part_2880515_64391137.1594370385846-- From xen-users-bounces@lists.xenproject.org Fri Jul 10 11:46:44 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 10 Jul 2020 11:46:44 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtrTI-0008FL-1w; Fri, 10 Jul 2020 11:45:40 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtrTH-0008F4-JW for xen-users@lists.xenproject.org; Fri, 10 Jul 2020 11:45:39 +0000 X-Inumbo-ID: dd3b9e06-c2a2-11ea-bb8b-bc764e2007e4 Received: from sonic309-13.consmr.mail.bf2.yahoo.com (unknown [74.6.129.123]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id dd3b9e06-c2a2-11ea-bb8b-bc764e2007e4; Fri, 10 Jul 2020 11:45:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1594381533; bh=HeqO/1r9FWw4VCNiFM39Uil5NwIHPwGGwjbSoSyUve0=; h=Date:From:Reply-To:To:In-Reply-To:References:Subject:From:Subject; b=kQkOj6ci4mKiLDn5nN4DcDd48HMQihrLOW4Ahb3mPTlWzFjHwuOxDjS0PfkJy/y+9JOCU32OmI6AWbvWyuN0GOofZHyndIjJbYuug6jCeKyUw4mN/afrD/3iTWHjFWdH/RPXhN+I4n7gEDuoJWa5nWbJvSklldpnip1tkxdDHFA/8b1+WKKJXdgN5gxYgkXW7a5Jz/XQV5DW5lhkxG99wFBnbKkhex0JA0q8bhABJA1gEU8tr9JKpv18bzINUR8l+2RE5YHdQF8CEuWh329Bgka3rFcJOUDHk4tV6rUfM/6ogpYfaEwKRqucVyXfuvBvF3JaWwlUq7zrk2TH2xi/lg== X-YMail-OSG: cNIalX8VM1nYqM2kVB3VB_pHTENNxF4szcq3C.0n2.ZR45GwU7knowfRXy2kEX6 jd2nLViw9wPjWjJQNk4OWOk1wzycY6FlsGrLQf5q7icpxt39ZgTAffpbm2nMIxKYbeP3OfKTkMVj TecWx7HdohrfizFMStP9S3orFDJibVcWHtKUJ8k1Ky3OeXsnEtZbRya9KIeVbdiEctgw2TvnJUMR qIhCxWM7ezbO_U.gbeZxXiiTuP8IW8SMZPhYmbNC8Ee2KeZ7vDyWR157w0xRf4uZj6ip6FSqOEAx CtIdM_BEFNTMEz27wIvQi5mRbZ0pXQdQWEoQTZRrUk2LCkp6OVF..weG0KT1o7ficagvxwJnELkF sZY2SeR3MsgNV5qHWfHMsQeV7kLnhXOloZ_xsrVbqWuWp.Twd3PTSODbgAp7Se2Z_6Oh7a5Voa8u vTq2wYWRaxHeG8U8uG35H83ZY05N2PZLLTJA059guv.Glw3eWa.dof.n1A.sVDFsCq1DurHWwxp4 Bjw3dbj7UVATupVsN9mFvgqtFWZXZ9UUw9UDx2KCpWJXxOJghSjjsC5k2.BhhPeD6rb_QrOF_W6S zS3kwMHLU1v_n6bhc3kpEWUNs96ZRg7TCUjvjhznZ_JWVqCDozf2.z2pYfPuKhRCcmgpvG.9U99X vs9XHB66ddUuhNZnMvMoMWmtnYtYLHKkGM0EMB.fvpcNE5YmJAdUe1m5iwg.FAk13Ro7mbCn7LQj k.44IQ83VyWWKSsK.rNCGEgR.eypCuYzujO1uZabvkiX_Zam8FJcwDKOUengmislV1YsVATKlvon JxI.QCZjkc1rC25Ex3x9UIXaHEXykILdIPc27S8a0aPSMk35WJFlzFNqUTiOtEyIkNqkY3c4_7lU MYn8w1F3nSG.XOpjl4ugjFPYZrmY0XYK6oPaLAf29JvUlnbsOUdBs_37d4mQUpSGTW.W3nGi9I4X qbm0CnSBql5u7syNbNTUfZYaoOqYrN5ZTgwin4ZZQq_8X4KPQz6LvGEeEzazEc4xyq9OMRHVYH06 MRZWNCo4mHb.2kv8vganYOIRtqvCdVTbtoszU2tPLRkSwmGkxZv1owlj5ULTQMewa46n6niWSXZE FfPGSVQj9uJ35Fe7vr0vZ35vipYDtMOU8c9P0NnOeszx_sFXXeEATGM4arE8DUueVSMfatIdCIPJ 2NlOytx_X5L9CRN01QahoPYMdI3blh0TmlOM_6uT_86aD2zhywBRviaT1qkhC56YO61dgJbgrkVP 4wjvmHEOFRgHOEipzTdTpNZiQ82G8PtFmvtQJOPar530ukdhBJ2CB36HyWSJ8bbjYM3PrkpFFy2Q __PFgkJsW.Zo8hvTPILwLFGv5y72LPyuiR9ogq64dQZEhgkj2dYYtue8_18Z.Rdjm9TMC2yl2ZwZ 2m0V1GQ-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic309.consmr.mail.bf2.yahoo.com with HTTP; Fri, 10 Jul 2020 11:45:33 +0000 Date: Fri, 10 Jul 2020 11:45:29 +0000 (UTC) From: Jason Long To: "lists.nick.betteridge@gmail.com" , Xen-users , "mirageos-devel@lists.xenproject.org" Message-ID: <395257948.2903663.1594381529814@mail.yahoo.com> In-Reply-To: References: <784251130.2623344.1594314570469.ref@mail.yahoo.com> <784251130.2623344.1594314570469@mail.yahoo.com> <919347890.2880516.1594370385847@mail.yahoo.com> Subject: Re: MirageOS and Unikernel. MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_2903662_1100230023.1594381529812" X-Mailer: WebService/1.1.16197 YahooMailAndroidMobile YMobile/1.0 (com.yahoo.mobile.client.android.mail/6.8.3; Android/7.1.1; NMF26F; bbc100; BlackBerry; BBC100-1; 5.16; 1184x720; ) Content-Length: 3249 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: "hack3rcon@yahoo.com" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" ------=_Part_2903662_1100230023.1594381529812 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit MirageOS is a project of Xen?Why for Unikernel the Ocaml programming language needed? Why not other programming languages?In "https://raw.githubusercontent.com/cetic/unikernels/master/MEDIA/vms-containers-unikernels.PNG" photo, the Unikernel for running each App using a separate Kernel? Or a Kernel run all Apps? In photo, two kernels == two Apps. Sent from Yahoo Mail on Android On Fri, Jul 10, 2020 at 1:18 PM, Nick Betteridge wrote: > The Unikernel system was a company that invented the Unikernel. When > Docker bought it then it mean the Docker owned Unikernel technology. > Docker is for Red Hat and Red Hat working on KVM, thus... MirageOS is composed of many libraries, all of which have their own license - generally ISC - with copyright going to the authors. Docker acquired a team of people, not rights to a suit of software. ------=_Part_2903662_1100230023.1594381529812 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable MirageOS is a project of Xen?
Why for Unikernel the Ocaml programming language needed? Why not oth= er programming languages?
In "https://raw.githubusercontent.com/cetic/unikernels/master/MEDI= A/vms-containers-unikernels.PNG" photo, the Unikernel for running each App = using a separate Kernel? Or a Kernel run all Apps? In photo, two kernels = =3D=3D two Apps.
=


=
On Fri, Jul 10, 2020 at 1:18 PM, = Nick Betteridge
<lists.nick.betteridge@gmail.com> wrote:
> The Unikernel system was a company that invented the Unikerne= l. When
> Docker bought it then it mean the Docker ow= ned Unikernel technology.
> Docker is for Red Hat and = Red Hat working on KVM, thus...


= MirageOS is composed of many libraries, all of which have their own
license - generally ISC - with copyright going to the authors.<= br clear=3D"none">
Docker acquired a team of people, not = rights to a suit of software.

------=_Part_2903662_1100230023.1594381529812-- From xen-users-bounces@lists.xenproject.org Fri Jul 10 15:02:40 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 10 Jul 2020 15:02:40 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtuWK-0000Mj-Bn; Fri, 10 Jul 2020 15:01:00 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtuWI-0000Me-T8 for xen-users@lists.xenproject.org; Fri, 10 Jul 2020 15:00:59 +0000 X-Inumbo-ID: 2969c80a-c2be-11ea-bb8b-bc764e2007e4 Received: from sonic303-2.consmr.mail.bf2.yahoo.com (unknown [74.6.131.41]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 2969c80a-c2be-11ea-bb8b-bc764e2007e4; Fri, 10 Jul 2020 15:00:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1594393258; bh=rENbId8KwyAZPH4+te+DSAWNy+KHt7w55QhHFgWL+O4=; h=Date:From:Reply-To:To:In-Reply-To:References:Subject:From:Subject; b=LOIodMI8KByQqhDldOLf1uVaC5/P8ZzTIOxv3nqCd4f124C1hHxaeBqEtgf1xZc7D0UQHvwW1bBRdotSUsqozf0EqVBgyE806FUnwN5EJmPvEZtdGBFjB64zB1FBRpDfG/hbbx6epdN6V+lnEn5eP9QJ8U4nph3XnaTnZc4AZ9pObETSBNCp7OmJyCHA5RqAxEXMmKLYgetPmjNIBKB05GbVHzyYTpr/Kc/1V2FB5lVwY7Wuxih67RjC8x9+zPEkMoRg7VKwQI8biinCfzV6IAABFi0LtWzZbritMLHRxQiVJQslRrQ0V7isyTBPaeVG90JnoELBzHqcnb4e2NIizA== X-YMail-OSG: ZpjNx2QVM1l7LZ02UP_1YP6HYygWnm1u9D1uRlUWmb6yKImfja2phuCXlSgup0E adumiYjL7yrziT3qw47SePAhPmXElGaTxBCNqyU.4nhmWiiJ2qsQKJfh5wQa20cCyDk15i441nLz TdC4__JhPS3JQ0d3vgevSUJ4QENqN3qSqCYTABQYq.LFffGddlJ.oWpunLW6tSsZKoX5tRkLA4UX 6HoL3sDWJneilXD6QMJDOXwAsMzy2F7aKLtoFdI.Y9GUxxWwD8LAbGVvo2bL_ZvbPR_Ph8GP5Lnl _RzlBdex2PZL6w6wMoe8olCl7UhXaMMOcVVwHe5ct1xvD2gvtEzjaMbMgPi6B9_EKp3VzkefgFZ8 JLHXy7UdNmW8ryl8WN.PjwSq.MIOpmns5N9QhpaYaTlpD.A8Ty5hikAWBAR1A6tSqro0MSnQdDB. qeFxh7qg0GlxxpSKpxJVCCdrIJtL6qZ5Qsra5Vh0A678b0s6FFYcK8k3VoimdENBAK9XW.OiQb2t uVumPJijRrHkZ3owK.06_Zc42ULBXw6Hieny1nEvfdkDL83q_cZwFtxBr0PamtUUEt2kfNGkwJdM hQ8zTWgk3jd_eV8syhjUoZJc0dokTxuc3TnzN07rbJfS_FeQJAQ04NbA1TxXTzknthtfEbSHeX0c Y.70QrTFM.Zh8oCNK_VGkqJN.4xzyhBzlYOwp6CsZHqnB6Yj6caOB9pmctS0Gi38aF793zvsHfyz nUOnFSYPAGwzjuxWPMu25ZnajgY.uaOvZ0oqDulvmmCIruUFxWifbqkdabxbYVEN8N0iytOta5rj 6x0AwE5OADFbFSYB1jUaPylSh7imxS.9LTyh9Bt2y5dI.sIcSf.8s7ygYNgsIbxNX_923WQ8kD8c _Jrfw56OQO0.hpj3kTqYgjVlfCVd7qcjDUkhs_wxLQcHVEzgaYvv_TUL.jS2jxp1XbkdC4kYrG.9 VH8dcb5KhzfKLjAjx09Xqdn8c9PqySFBwF_CFm8wrgto244La9y4i8s2qEFvUnV_xdl5f0ip2m__ sIdxJR2g8wjZDq7UwMFGGanS6rz4NFpdQ6lAPJyDs5pjXldTcIUAfHJXqNNMTBDp4ba2oWBBm4yO Yvx3eAmTh_U6r3pabVEQITNx9whvmZIXpH9mXOZfLKmRDld5RqK1H3tUU8NbBFExx7lGRnakaHUB UoobBXHF8q_sD38s9f3MaxdxKHItkMJ7x5rQVzqF1_jQnK9J2Rg4gmwbnSGCz2rpKNGk1RURK3Ub F4NQsgL6pziJ2wQU94iO47S18tst9k1n_UxjUoMkeyz2RzPYBiA6ZJVy.XhKeuM3tfVGwBkUxq3g Jqco0W_1UyRxyrkCI0urEJi2Pcv4W20vBxcr4vzc0rQRzv4lePJuTGLQyMySUCNgA8_U- Received: from sonic.gate.mail.ne1.yahoo.com by sonic303.consmr.mail.bf2.yahoo.com with HTTP; Fri, 10 Jul 2020 15:00:57 +0000 Date: Fri, 10 Jul 2020 15:00:56 +0000 (UTC) From: Jason Long To: "hack3rcon@yahoo.com" , Xen-users , "mirageos-devel@lists.xenproject.org" Message-ID: <1101730410.2975527.1594393256638@mail.yahoo.com> In-Reply-To: <784251130.2623344.1594314570469@mail.yahoo.com> References: <784251130.2623344.1594314570469.ref@mail.yahoo.com> <784251130.2623344.1594314570469@mail.yahoo.com> Subject: Re: MirageOS and Unikernel. MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_2975526_1045331719.1594393256637" X-Mailer: WebService/1.1.16197 YahooMailAndroidMobile YMobile/1.0 (com.yahoo.mobile.client.android.mail/6.8.3; Android/7.1.1; NMF26F; bbc100; BlackBerry; BBC100-1; 5.16; 1184x720; ) Content-Length: 2086 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: "hack3rcon@yahoo.com" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" ------=_Part_2975526_1045331719.1594393256637 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Thank you Richard.Kernel == The libraries that an App need to run.Am I right?In the Unikernel, no operating system exist and the Xen play the role of OS. Is it true?The Xen hypervisor can do anything that an OS kernel do???The source of photo is: https://github.com/cetic/unikernels Can you show me a clear and better diagram about Unikernel? Sent from Yahoo Mail on Android ------=_Part_2975526_1045331719.1594393256637 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Thank you Richard.
Kern= el =3D=3D The libraries that an App need to run.
Am I right?
In the Unikernel, no operating system exist and = the Xen play the role of OS. Is it true?
The Xen hypervisor can do anything that an OS kerne= l do???
The sourc= e of photo is: https://github.com/cetic/unikernels

Can you show me a clear and better diagram abou= t Unikernel?

=
------=_Part_2975526_1045331719.1594393256637-- From xen-users-bounces@lists.xenproject.org Fri Jul 10 18:45:57 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 10 Jul 2020 18:45:57 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jty14-0002Th-Uw; Fri, 10 Jul 2020 18:44:58 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtoiF-0001jU-Qg for xen-users@lists.xenproject.org; Fri, 10 Jul 2020 08:48:55 +0000 X-Inumbo-ID: 2c960d38-c28a-11ea-bca7-bc764e2007e4 Received: from mail-wm1-x32e.google.com (unknown [2a00:1450:4864:20::32e]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 2c960d38-c28a-11ea-bca7-bc764e2007e4; Fri, 10 Jul 2020 08:48:50 +0000 (UTC) Received: by mail-wm1-x32e.google.com with SMTP id l17so5224331wmj.0; Fri, 10 Jul 2020 01:48:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=bYbiWn4wHOniccBw0+DaOlDRQfD/Y/Y9hlSkafIztBk=; b=Vo3UT+Dwl8k4cdscMNgla2WT+xx+aHeMIYK7f8ondkhIAe2EZUZU9Hdg1BHcbuaKDZ AnmNBAPElUXCvHC2GlHwJ+Li5/xioA+7k+rrk5Dh0odiXPwfrvsAl21iJqxUiAuT4y+C Co1B8bdx2FGZ1TGs2gXghN2XK+ag82U9aPKYi2bdPTOYD2tw77kb+AphO2EpPfI0Lp4r Y6sQhpYXtz9/9K8D0yJ0rAQg7cYumoD47U7krYiesPNb4JL6Xci5aomCBuQrF0WWvWqj 4+itxZviggeFFizLdiW/Xn2c2YtLMHGoDw8BIKGFvVdJN4ID+tnUpQpd2CfTfUKivP5Y DPgg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=bYbiWn4wHOniccBw0+DaOlDRQfD/Y/Y9hlSkafIztBk=; b=IDTxbZoUaw3eg8gA0Atj+mupMWfOtZD8TY84rC222RNtaThyVF0rW3A2OYztYd5yL5 ZsL5Dlap1XKn94TmUGo1i0aCTKNsn8PPM5uofdOBNfG+V7yj1NGSpnOqhcyD/NsGyOn9 jawCzFvjFsD14JUAHX+OL122YBjzFTXmOi3vrjzGSF/i79MMoD5XtrblgGULKQbMt4oP q8ojo/ygc2SNJrhi8dWjQjIQ3Q+xdRSzu1S7YSXZ6D3ut+5UoqapYVkR92vWPoE7okZS 6Esy0z86FR2/UUJqgb1b9GGfYjnEGkGtiMlhb5N+ekML7CR7jn2W0+vGc0g4PVdTJqvA IxBg== X-Gm-Message-State: AOAM530LYPKZosc3Cy+gE++h6nc/NoiKRnYsUu9+Flx/YpvrGiS/EG4L Xjm+n3hFu4Uds2Jm62ZHvz2e82p+JTs= X-Google-Smtp-Source: ABdhPJxQPgOtBnCePzS8X1eJS0h7WrXR5LgezrGeGJmlASrQctVnVrUvW0ktkjZVfcdMGtKaRnlz+A== X-Received: by 2002:a7b:c194:: with SMTP id y20mr4333284wmi.83.1594370929213; Fri, 10 Jul 2020 01:48:49 -0700 (PDT) Received: from [10.0.0.171] (static-90-255-235-69.vodafonexdsl.co.uk. [90.255.235.69]) by smtp.gmail.com with ESMTPSA id k18sm9181751wrx.34.2020.07.10.01.48.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 10 Jul 2020 01:48:48 -0700 (PDT) Subject: Re: MirageOS and Unikernel. To: "hack3rcon@yahoo.com" , Xen-users , "mirageos-devel@lists.xenproject.org" References: <784251130.2623344.1594314570469.ref@mail.yahoo.com> <784251130.2623344.1594314570469@mail.yahoo.com> <919347890.2880516.1594370385847@mail.yahoo.com> From: Nick Betteridge Message-ID: Date: Fri, 10 Jul 2020 09:48:47 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <919347890.2880516.1594370385847@mail.yahoo.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Fri, 10 Jul 2020 18:44:57 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" > The Unikernel system was a company that invented the Unikernel. When > Docker bought it then it mean the Docker owned Unikernel technology. > Docker is for Red Hat and Red Hat working on KVM, thus... MirageOS is composed of many libraries, all of which have their own license - generally ISC - with copyright going to the authors. Docker acquired a team of people, not rights to a suit of software. From xen-users-bounces@lists.xenproject.org Fri Jul 10 18:45:57 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 10 Jul 2020 18:45:57 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jty1I-0002U4-BJ; Fri, 10 Jul 2020 18:45:12 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jsMQX-0001je-3A for xen-users@lists.xenproject.org; Mon, 06 Jul 2020 08:24:37 +0000 X-Inumbo-ID: 1e08ff08-bf62-11ea-b7bb-bc764e2007e4 Received: from mail-40141.protonmail.ch (unknown [185.70.40.141]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 1e08ff08-bf62-11ea-b7bb-bc764e2007e4; Mon, 06 Jul 2020 08:24:32 +0000 (UTC) Date: Mon, 06 Jul 2020 08:24:27 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail; t=1594023871; bh=2UZSt6Qv9RILED2NLjQcuijmNwSLxn80flm73vpA2CQ=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References:From; b=hAPNm5vzkWSqgCcVLTs/H7aKdKestl8Wecy2qyZjx36bZxgJrwWqFZxd26H5emtEJ x7pp4dIM8xKNqa+JxQr1rQ9g8uRDnK/7S5w1noA+aCOuKvRTpS+FAdjo/OcdAsFDaI 3KRoR4yzkucya78EyDCkspwBtg+d2LFlwPbh1G44= To: Bertrand.Marquis@arm.com From: peter.jac@protonmail.com Subject: Re: Xen and Automotive. 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Fri, 10 Jul 2020 18:45:12 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jttIb-00028v-VN for xen-users@lists.xenproject.org; Fri, 10 Jul 2020 13:42:45 +0000 X-Inumbo-ID: 37504422-c2b3-11ea-8fbd-12813bfff9fa Received: from ppsw-32.csi.cam.ac.uk (unknown [131.111.8.132]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 37504422-c2b3-11ea-8fbd-12813bfff9fa; Fri, 10 Jul 2020 13:42:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=cam.ac.uk; s=20180806.ppsw; h=Sender:References:To:Cc:In-Reply-To:Date:Subject: Mime-Version:Content-Type:Message-Id:From:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=Px5pyAQYw9W8FVeRYbk8VtlefCifnkjjTjeqbwAdS6w=; b=RMZx3hi5iMIDntIFB1gHw88ruv 6R3qZUvc1ABdMMRWqRqY16NH9KXm38+tCDCtvH8DfqkUmc/GHkvScBFI9ue0r2HGIcOO0lOi+9wuZ fa+A4fbh8BfPJRUGyvr2T67pMzK4rWD23kbxxgx2NkGDs4OcbPk731o+CVAd5snm68vY=; X-Cam-AntiVirus: no malware found X-Cam-ScannerInfo: http://help.uis.cam.ac.uk/email-scanner-virus Received: from [90.254.230.213] (port=61970 helo=greyjay.lan) by ppsw-32.csi.cam.ac.uk (smtp.hermes.cam.ac.uk [131.111.8.156]:587) with esmtpsa (PLAIN:rmm1002) (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) id 1jttIS-000dyr-2l (Exim 4.92.3) (return-path ); Fri, 10 Jul 2020 14:42:36 +0100 From: Richard Mortier Message-Id: Content-Type: multipart/alternative; boundary="Apple-Mail=_65459BA4-A241-4612-8F41-9367DCE51E53" Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.80.23.2.2\)) Subject: Re: MirageOS and Unikernel. Date: Fri, 10 Jul 2020 14:42:36 +0100 In-Reply-To: <395257948.2903663.1594381529814@mail.yahoo.com> To: "hack3rcon@yahoo.com" References: <784251130.2623344.1594314570469.ref@mail.yahoo.com> <784251130.2623344.1594314570469@mail.yahoo.com> <919347890.2880516.1594370385847@mail.yahoo.com> <395257948.2903663.1594381529814@mail.yahoo.com> X-Mailer: Apple Mail (2.3608.80.23.2.2) X-Mailman-Approved-At: Fri, 10 Jul 2020 18:45:10 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "mirageos-devel@lists.xenproject.org" , Xen-users Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --Apple-Mail=_65459BA4-A241-4612-8F41-9367DCE51E53 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 My turn! Hi! > On 10 Jul 2020, at 12:45, Jason Long wrote: >=20 > MirageOS is a project of Xen? Not sure what you mean by that=E2=80=A6? The Xen Project is a Linux Foundation Collaborative Project (or so its = webpage says). The Xen Project hosts Mirage OS as one of its unikernel projects. Xen was one of the original targets for Mirage OS, though there are now = quite a few others. > Why for Unikernel the Ocaml programming language needed? OCaml is not needed for a unikernel. It happens to be the language that = Mirage OS used.=20 (And a mighty fine language it is too, or so I am told=E2=80=A6 ;) > Why not other programming languages? Why not indeed =E2=80=94 there are many other unikernel projects that = use other programming languages. Even C these days I hear. = http://unikernel.org/projects/ has a = (likely incomplete) list. > In = "https://raw.githubusercontent.com/cetic/unikernels/master/MEDIA/vms-conta= iners-unikernels.PNG" photo, the Unikernel for running each App using a = separate Kernel? Or a Kernel run all Apps? In photo, two kernels =3D=3D = two Apps. I=E2=80=99m not sure where exactly is the source of that figure =E2=80=94 = but my gloss on it would be that the "unikernel apps=E2=80=9D (labelled = =E2=80=9CVM=E2=80=9D) each contain both the code you=E2=80=99d usually = think of as being the app, plus the functionality for which an app would = usually rely on a shared kernel as statically linked libraries. As a = result labelling both identically as =E2=80=9CKernel=E2=80=9D might be = slightly misleading as the code represented could be different in each = case (eg., the lefthand app might have a network stack but no = filesystem, the righthand app might need a filesystem but no network). >=20 >=20 >=20 > Sent from Yahoo Mail on Android = > On Fri, Jul 10, 2020 at 1:18 PM, Nick Betteridge > wrote: > > The Unikernel system was a company that invented the Unikernel. When=20= > > Docker bought it then it mean the Docker owned Unikernel technology. > > Docker is for Red Hat and Red Hat working on KVM, thus... >=20 >=20 > MirageOS is composed of many libraries, all of which have their own=20 > license - generally ISC - with copyright going to the authors. >=20 > Docker acquired a team of people, not rights to a suit of software. >=20 =E2=80=94 =20 Richard Mortier richard.mortier@cl.cam.ac.uk --Apple-Mail=_65459BA4-A241-4612-8F41-9367DCE51E53 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 My = turn! Hi!

On 10 Jul 2020, at 12:45, Jason Long <hack3rcon@yahoo.com>= wrote:

MirageOS is a project of Xen?

Not sure what you mean by that=E2=80=A6?
T= he Xen Project is a Linux Foundation Collaborative Project (or so its = webpage says).
The Xen Project hosts Mirage OS as one of its = unikernel projects.
Xen was one of the original targets for = Mirage OS, though there are now quite a few others.

Why for = Unikernel the Ocaml programming language needed? =

OCaml is not = needed for a unikernel. It happens to be the language that Mirage OS = used. 
(And a mighty fine language it is too, or so I am = told=E2=80=A6 ;)

Why not other = programming languages?

Why not indeed =E2=80=94 there are many other = unikernel projects that use other programming languages. Even C these = days I hear. http://unikernel.org/projects/ has a (likely = incomplete) list.

In "https://raw.githubusercontent.com/cetic/unikernels/master/MEDIA= /vms-containers-unikernels.PNG" photo, the Unikernel for running = each App using a separate Kernel? Or a Kernel run all Apps? In photo, = two kernels =3D=3D two Apps.

I=E2=80=99m not sure where exactly is the source of = that figure =E2=80=94 but my gloss on it would be that the "unikernel = apps=E2=80=9D (labelled =E2=80=9CVM=E2=80=9D) each contain both the code = you=E2=80=99d usually think of as being the app, plus the functionality = for which an app would usually rely on a shared kernel as statically = linked libraries. As a result labelling both identically as =E2=80=9CKerne= l=E2=80=9D might be slightly misleading as the code represented could be = different in each case (eg., the lefthand app might have a network stack = but no filesystem, the righthand app might need a filesystem but no = network).






=
=
On Fri, Jul 10, 2020 at 1:18 PM, Nick = Betteridge
<lists.nick.betteridge@gmail.com> wrote:
=
> The Unikernel system was a company that invented = the Unikernel. When
> Docker bought it = then it mean the Docker owned Unikernel technology.
> Docker is for Red Hat and Red Hat working on KVM, = thus...


MirageOS is composed of many libraries, all of which have = their own
license - generally ISC - with = copyright going to the authors.

Docker acquired a team of people, not rights = to a suit of software.

=

=E2=80=94  
Richard Mortier




= --Apple-Mail=_65459BA4-A241-4612-8F41-9367DCE51E53-- From xen-users-bounces@lists.xenproject.org Fri Jul 10 18:45:58 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 10 Jul 2020 18:45:58 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jty1J-0002UT-5q; Fri, 10 Jul 2020 18:45:13 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jtvXh-0006CS-Is for xen-users@lists.xenproject.org; Fri, 10 Jul 2020 16:06:30 +0000 X-Inumbo-ID: 4ed7ec58-c2c7-11ea-8fe7-12813bfff9fa Received: from ppsw-32.csi.cam.ac.uk (unknown [131.111.8.132]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 4ed7ec58-c2c7-11ea-8fe7-12813bfff9fa; Fri, 10 Jul 2020 16:06:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=cam.ac.uk; s=20180806.ppsw; h=Sender:References:To:Cc:In-Reply-To:Date:Subject: Mime-Version:Content-Type:Message-Id:From:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=3EiqvKfuoAckCmvyOA7+6WqIulH+eEx93ZPc4awXuWA=; b=qn1yAJDjQnNA+K3121dx6cTFqr 9ifZuwnXCqOrW/DgArkDrXaSh79KD0NFsJHXMR5nrRF0RQhiW5bFEdqHJkFCVMk6Uw1wpdhGGxtbk tofgDyOsqrBKqU0AQuanwwZ1bTbCF67bTZyOzM2rrwuGr+GS9yy6KpcsuhiapOy9Oqgw=; X-Cam-AntiVirus: no malware found X-Cam-ScannerInfo: http://help.uis.cam.ac.uk/email-scanner-virus Received: from [90.254.230.213] (port=51262 helo=greyjay.lan) by ppsw-32.csi.cam.ac.uk (smtp.hermes.cam.ac.uk [131.111.8.156]:587) with esmtpsa (PLAIN:rmm1002) (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) id 1jtvXe-000jHC-0k (Exim 4.92.3) (return-path ); Fri, 10 Jul 2020 17:06:26 +0100 From: Richard Mortier Message-Id: <3AEF23C4-FA43-4029-9649-136F702D9D37@cl.cam.ac.uk> Content-Type: multipart/alternative; boundary="Apple-Mail=_7B17DB30-B879-4E94-AD65-A080FBE35D7D" Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.80.23.2.2\)) Subject: Re: MirageOS and Unikernel. Date: Fri, 10 Jul 2020 17:06:25 +0100 In-Reply-To: <1101730410.2975527.1594393256638@mail.yahoo.com> To: "hack3rcon@yahoo.com" References: <784251130.2623344.1594314570469.ref@mail.yahoo.com> <784251130.2623344.1594314570469@mail.yahoo.com> <1101730410.2975527.1594393256638@mail.yahoo.com> X-Mailer: Apple Mail (2.3608.80.23.2.2) X-Mailman-Approved-At: Fri, 10 Jul 2020 18:45:10 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "mirageos-devel@lists.xenproject.org" , Xen-users Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --Apple-Mail=_7B17DB30-B879-4E94-AD65-A080FBE35D7D Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On 10 Jul 2020, at 16:00, Jason Long wrote: >=20 > Thank you Richard. > Kernel =3D=3D The libraries that an App need to run. > Am I right? In the context of a unikernel, I think that=E2=80=99s a reasonable = analogy. But those libraries will not perform all the functions you would = normally expect an OS kernel to perform. > In the Unikernel, no operating system exist and the Xen play the role = of OS. Is it true? "It depends.=E2=80=9D What do you mean by the operating system? In terms of functionality, for a unikernel system, much of the = functionality you would usually rely on the operating system to perform = (in most cases, by a kernel) is provided by library code (unikernels =E2=80= =94 certainly Mirage OS =E2=80=94 are strongly inspired by library = operating systems). But not all =E2=80=94 if you are using Xen as your = host environment then yes, Xen will provide some of that functionality = as well. > The Xen hypervisor can do anything that an OS kernel do??? I don=E2=80=99t think that=E2=80=99s a well-formed question =E2=80=94 = first, you probably need to declare what an OS kernel can do. > The source of photo is: https://github.com/cetic/unikernels = >=20 > Can you show me a clear and better diagram about Unikernel? Well, it depends what you want the diagram to help explain. I don=E2=80=99= t have any to hand right now. =E2=80=94 =20 Richard Mortier richard.mortier@cl.cam.ac.uk --Apple-Mail=_7B17DB30-B879-4E94-AD65-A080FBE35D7D Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8

On 10 Jul 2020, at 16:00, Jason Long <hack3rcon@yahoo.com>= wrote:

Thank= you Richard.
Kernel =3D=3D The libraries that an App need to = run.
Am I right?

In the context of a unikernel, I think that=E2=80=99s a = reasonable analogy.
But those libraries will not perform all = the functions you would normally expect an OS kernel to = perform.

In the = Unikernel, no operating system exist and the Xen play the role of OS. Is = it true?

"It = depends.=E2=80=9D
What do you mean by the operating = system?
In terms of functionality, for a unikernel system, = much of the functionality you would usually rely on the operating system = to perform (in most cases, by a kernel) is provided by library code = (unikernels =E2=80=94 certainly Mirage OS =E2=80=94 are strongly = inspired by library operating systems). But not all =E2=80=94 if you are = using Xen as your host environment then yes, Xen will provide some of = that functionality as well.

The Xen = hypervisor can do anything that an OS kernel = do???

I don=E2=80=99= t think that=E2=80=99s a well-formed question =E2=80=94 first, you = probably need to declare what an OS kernel can do.

The source of = photo is: https://github.com/cetic/unikernels

Can you show me a clear and better diagram about = Unikernel?

Well, = it depends what you want the diagram to help explain. I don=E2=80=99t = have any to hand right now.

=E2=80=94  
Richard Mortier




= --Apple-Mail=_7B17DB30-B879-4E94-AD65-A080FBE35D7D-- From xen-users-bounces@lists.xenproject.org Fri Jul 10 18:50:24 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 10 Jul 2020 18:50:24 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jty68-0003k6-Tp; Fri, 10 Jul 2020 18:50:12 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jty67-0003jq-5v for xen-users@lists.xenproject.org; Fri, 10 Jul 2020 18:50:11 +0000 X-Inumbo-ID: 2e32e00e-c2de-11ea-bb8b-bc764e2007e4 Received: from mail-ot1-x32f.google.com (unknown [2607:f8b0:4864:20::32f]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 2e32e00e-c2de-11ea-bb8b-bc764e2007e4; Fri, 10 Jul 2020 18:50:10 +0000 (UTC) Received: by mail-ot1-x32f.google.com with SMTP id e90so4939973ote.1; Fri, 10 Jul 2020 11:50:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=7xlQsh3FH6b0DDUNEItm789Iq8kr3RziFE0G1Oy49/w=; b=ZXKRM4QTdJGwbW8WCgS4M7r+d40znqhQZFQw6Aqr4aLEHSmW2Hezbxo0IY4LIDhlNQ XVBOt37lMcdXNFuu8JA6blBqNCSvZh1HxYiw3dxxsuO0XnQGkEteWYWJY6h1wYJY6uXh jSA4CvQgnJX436ibS2wGHEiK/ZbqY7/s2jLjA0hlU18Aj/eoXUXomixV/HoA1cnNaAY7 Pe5stDx/oYZwRVA242uwSNj5B7XT3e3wapcck62tTLI9rtqx4fnIysNEExSEquCI6M/D DXaa5g4R0BL6bxUd+rvdkSz97p8i6x1F/uerD+nplOq9RJT2es2pliy3CJaGqwrIZgAV Qt1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=7xlQsh3FH6b0DDUNEItm789Iq8kr3RziFE0G1Oy49/w=; b=MvzTSxHuN/EkXePAjiV0XKYEHfQYv6KZ2O5cKiyOX+eI64jrqyPcKjxEvuSdoIWKn+ wk/DuhLY0b4Gf3+XKLmouwQh4p5o20R6Ct9QrchJjYEIjc9BPG/Ud0Jkeit9DUYBYRL8 X/kn23fJ1WZoJR6ad4CTIUjNLwu12SwLxmvxhWf6yVoUZ1vJNQh8OSI/q94D4ZChttpk QSZsidhnTT1ZrpLe99Bk0xFX3kda8yu0Sc/7zYZV1r8R/Hk46be2wwzIHC5TWFbz6t76 Z0b6EeGthhrf+3F2C0oCxatGm0dixSYwEhd3oDAenZmOsjT2emo4edFH0lzd9WtbdKRg 2lxg== X-Gm-Message-State: AOAM531AbgPIo5eadIbPHZLyjnDCPKFM4+nBl5t+UaSHmATCoFWvO+xi hTwgq8AEe6VfogW+3UCJZlEZMzVZOCSZNQqmagRq79w= X-Google-Smtp-Source: ABdhPJy8v91wNkHAyF1G3X4gAppsNsxDu/ipaR40Shlj1ivWr71REXurY+gajRdOC321HxEp3QL1D8zlZOjZuQBM2Pk= X-Received: by 2002:a9d:6484:: with SMTP id g4mr39006969otl.103.1594407009838; Fri, 10 Jul 2020 11:50:09 -0700 (PDT) MIME-Version: 1.0 References: <784251130.2623344.1594314570469.ref@mail.yahoo.com> <784251130.2623344.1594314570469@mail.yahoo.com> <1101730410.2975527.1594393256638@mail.yahoo.com> In-Reply-To: <1101730410.2975527.1594393256638@mail.yahoo.com> From: Bela Berde Date: Fri, 10 Jul 2020 20:49:59 +0200 Message-ID: Subject: Re: MirageOS and Unikernel. To: "hack3rcon@yahoo.com" Content-Type: multipart/alternative; boundary="00000000000072eac305aa1acfc5" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "mirageos-devel@lists.xenproject.org" , Xen-users Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --00000000000072eac305aa1acfc5 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri 10 Jul 2020 at 17:05, Jason Long wrote: > Thank you Richard. > Kernel =3D=3D The libraries that an App need to run. > NO > Am I right? > In the Unikernel, no operating system exist and the Xen play the role of > OS. Is it true? > NO > The Xen hypervisor can do anything that an OS kernel do??? > NO > The source of photo is: https://github.com/cetic/unikernels > > Can you show me a clear and better diagram about Unikernel? > The name unikernel means many different things. But a real unikernel has a definition. It does not need any hypervisor. It essentially needs a Virtual Machine Monitor layer that has nothing to do with Virtual Machine (VM). First of all, OS libraries, meaning the OS split into libraries, are linked to the app binary. No OS is needed anymore. Have a look at Rumprun unikernel for more information, and forget Docker=E2=80=99stuff. > > Sent from Yahoo Mail on Android > > --=20 Sent from iPad --00000000000072eac305aa1acfc5 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Fri 10 Jul 2020 at 17:05, Jason Long <hack3rcon@yahoo.com> wrote:
Thank you Richard.
Kernel =3D=3D The libraries that = an App need to run.
NO
Am I right?
In the Unikernel, no operating s= ystem exist and the Xen play the role of OS. Is it true?
=
NO
The Xen hype= rvisor can do anything that an OS kernel do???
NO
The source of photo = is: https://github.com/cet= ic/unikernels

Can you show me a clear and better diagram= about Unikernel?

The name unikernel means many different things. But a real unikernel= has a definition.=C2=A0
It does not need any hyperv= isor. It essentially needs a Virtual Machine Monitor layer that has nothing= to do with Virtual Machine (VM).=C2=A0
First of all= , OS libraries, meaning the OS split into libraries, are linked to the app = binary.=C2=A0
No OS is needed anymore.=C2=A0
Have a look at Rumprun unikernel for more information, and = forget Docker=E2=80=99stuff.=C2=A0

=
Sent from Yahoo Mail on= Android
--
Sent from iPad --00000000000072eac305aa1acfc5-- From xen-users-bounces@lists.xenproject.org Fri Jul 10 21:47:01 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 10 Jul 2020 21:47:01 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1ju0pQ-0001PW-V1; Fri, 10 Jul 2020 21:45:08 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1ju0pP-0001P0-EI for xen-users@lists.xenproject.org; Fri, 10 Jul 2020 21:45:07 +0000 X-Inumbo-ID: 9b63cd56-c2f6-11ea-8496-bc764e2007e4 Received: from sonic308-2.consmr.mail.bf2.yahoo.com (unknown [74.6.130.41]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 9b63cd56-c2f6-11ea-8496-bc764e2007e4; Fri, 10 Jul 2020 21:45:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1594417501; bh=7CXLtcMybT9QQqLtEFPrvEF03bLU/y4+J1QeZsfmFcE=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:From:Subject; b=SSUQ3q3NKyfelpWN2yyFcupT2/2SiV6SSfUaduRlVWu55k9dCFHhb8SvoHHXrn0If27iot4zBD/AG5JynzipsX3YotORH4JI8lLmuLcwGo7aiZ3HKonR+DtBLp6hCn5q6PR6eslOrzyCDRotJHPkxw5SMMptfy3B4ycLBmma4yyrq9Tn8OQeGH+jcHjmjahWhkE52E/2SvgjIU3AMqmI9uvK6VdKLBrRyDoYCXIfJaDDmRMQc4h/m+Z4a2ZUb9v8sHmdJqUtGLz0bez6X12UgCR0sHZDaX/YpjaN+45c/wqDWTedNAar0lOBiXo8SE1zTvSgrImOWov+SepLRBocrg== X-YMail-OSG: G1WWPD0VM1nlbxX29aEc3WRh4HRs1I4uImSsN6zCiUWY8kL8uOK3.wlAKyN8xLi 8Fa3VWBYwtNow9JdpcoiPH8M28Ti4ywTSDcS6iikCRsQh.DCV_8ovVRhlgXcWC.eEKDIVhJeRTuc 7VFQxLaac.lLg.2TS0ZNotn4Eg7.zaqoQsY0Ub42k5ZaPIx0jlMBBQTUPsDpocM2WHQ1sLEqa6E. 63ZtQsFsdYuu6gquSr2DgqO21b2umpNNu1GSiqryfnQDM9ioePlrWFHT86Ql2Ww8WgsXNgzfv_Xl JiRxW55tA5PRfyDYNEclm711phexQ11PYNtKQRXFeT5gFfjNvAcZFByd6N40DUnXaTOtrdbGo6ux 0rQC8p0AL3FHhzN_pAv5K3.zXQmIOhUUp8wSb.7ZoG25gG62V53sswXtnYloN4hYmlOVn4.W6Fbe l5qssW.jfRNqnAQnwEEIpndm3V6eFd.kvwko6SIoePSPXiQymR2qrLKySVeTSOJy2vcJ4xnGcSOx JNvhFgSI5VHTCOjX8gbvFiM5u8e9X_2JQtbTReXGVFF3AO54JlR8FTf7oM_mBK84R0NSg7TBMLTQ sEebqmPpa8P2dbpamaDJmK7ctpOd2PrYFlCry.kUO8.OQZq5EAiGpwZET2HHhPxz5B3PkgiZqqoK 9d8Ra7qMPxM5Ios0rdK5RWUp_DSdemTKkJ4Mxbjv2dfSCwFFYo41B_PUPJ.CZL.FoINMevojWSyV NtwMdl2dv4wJPOVdiS0oNlcSnAZxULhEuVwrmYr.DvEQw4US3RrA4L8trosGaY5K9Cm9Y9JO_YD_ END__m5MJVgnc0J0WekShRv3vxe2Rr2etE2bX2wV9.oQ6IGinY_ohQJi29ocVQCljzzFtFWdhorJ yECcD3utLtKufK9okGEWqc8mtdy9W2aHPt_mokKxHcFL3YWr4owjIzqUnKSdgPopBMLnPnWUmbfJ .QKf9LFrOuUtXmYceDvcuX_c5Uugve5B6GAJDHgr6Qr0UP6kuAkncXx1oV063LsH3rknqevn2_V8 IhvscMElcUhPlDOXtoLC7duLYZ0CVlas0KZ9iRcrpd0VzeQ0S7JJ5z4KYBa_1SmBTogrkM5iV.yQ dd.NdthcRs6UVfoAWKeG.s6S5aLufhLaBsB92q7hIlrTFbwG_Eu8Xn.ZThMhVvt_ZPqXi1ZPTex0 f_NUmLCpUbJYg9Zdr.htDOkIO5InSOznmAIOf88hPntGTI.ch5oWrqcQjov_xJP33scjW8guhSgD xYp_ccik0vAkarPlH4Rl2aournqZfRg9GPR7laIK3L0P1Xj8Jo4.Pwdws54FXsH_02uuzEyeNcgg tYhq4C4YAZ.G4IWLJrWUzveaH2NfV34vZdZqvhnZxrwS7GjBonr.RPmSXmfPDBLhNdCTxywUjj.s abKdb0uq9qQER0dXe Received: from sonic.gate.mail.ne1.yahoo.com by sonic308.consmr.mail.bf2.yahoo.com with HTTP; Fri, 10 Jul 2020 21:45:01 +0000 Date: Fri, 10 Jul 2020 21:44:58 +0000 (UTC) From: Jason Long To: "richard.mortier@cl.cam.ac.uk" Message-ID: <828141896.3113181.1594417498714@mail.yahoo.com> In-Reply-To: <3AEF23C4-FA43-4029-9649-136F702D9D37@cl.cam.ac.uk> References: <784251130.2623344.1594314570469.ref@mail.yahoo.com> <784251130.2623344.1594314570469@mail.yahoo.com> <1101730410.2975527.1594393256638@mail.yahoo.com> <3AEF23C4-FA43-4029-9649-136F702D9D37@cl.cam.ac.uk> Subject: Re: MirageOS and Unikernel. MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_3113180_1894218761.1594417498712" X-Mailer: WebService/1.1.16197 YahooMailAndroidMobile YMobile/1.0 (com.yahoo.mobile.client.android.mail/6.8.3; Android/7.1.1; NMF26F; bbc100; BlackBerry; BBC100-1; 5.16; 1184x720; ) Content-Length: 8503 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: "hack3rcon@yahoo.com" Cc: "mirageos-devel@lists.xenproject.org" , Xen-users Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" ------=_Part_3113180_1894218761.1594417498712 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Thanks.Consider Xen Dom0, it is based on Linux. When Unikernel running on X= en then its mean that it running on Linux!!!Can Xen without Dom0 handle the= Unikernel Apps?Thus, Unikernel Apps need a kernel like linux to work. Am I= right?All functions of an applications packed in Unikernel? For example, N= ginx using many libraries and OS components then how it can be convert to U= nikernel? Sent from Yahoo Mail on Android=20 =20 On Fri, Jul 10, 2020 at 8:36 PM, Richard Mortier wrote: =20 On 10 Jul 2020, at 16:00, Jason Long wrote: Thank you Richard.Kernel =3D=3D The libraries that an App need to run.Am I = right? In the context of a unikernel, I think that=E2=80=99s a reasonable analogy.= But those libraries will not perform all the functions you would normally e= xpect an OS kernel to perform. In the Unikernel, no operating system exist and the Xen play the role of OS= . Is it true? "It depends.=E2=80=9DWhat do you mean by the operating system?In terms of f= unctionality, for a unikernel system, much of the functionality you would u= sually rely on the operating system to perform (in most cases, by a kernel)= is provided by library code (unikernels =E2=80=94 certainly Mirage OS =E2= =80=94 are strongly inspired by library operating systems). But not all =E2= =80=94 if you are using Xen as your host environment then yes, Xen will pro= vide some of that functionality as well. The Xen hypervisor can do anything that an OS kernel do??? I don=E2=80=99t think that=E2=80=99s a well-formed question =E2=80=94 first= , you probably need to declare what an OS kernel can do. The source of photo is: https://github.com/cetic/unikernels Can you show me a clear and better diagram about Unikernel? Well, it depends what you want the diagram to help explain. I don=E2=80=99t= have any to hand right now. =E2=80=94 =C2=A0Richard Mortierrichard.mortier@cl.cam.ac.uk =20 ------=_Part_3113180_1894218761.1594417498712 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Thanks.
Consider Xen Do= m0, it is based on Linux. When Unikernel running on Xen then its mean that = it running on Linux!!!
Can Xen without Dom0 handle the Unikernel Apps?
Thus, Unikernel Apps need a kernel lik= e linux to work. Am I right?
All functions of an applications packed in Unikernel? For examp= le, Nginx using many libraries and OS components then how it can be convert= to Unikernel?


<= br>
On Fri, Jul 10, 2020 at 8:36 PM, Ri= chard Mortier
<richard.mortier@cl.cam.ac.uk> wrote:
<= /div>


O= n 10 Jul 2020, at 16:00, Jason Long <hack3rcon@yahoo.com> wrote= :

=
Thank you Richard.
Kernel =3D=3D= The libraries that an App need to run.
Am I right?

= In the context of a unikernel, I think that=E2=80=99s a reasonable analogy.=
But those libraries will not perform all the functions you would= normally expect an OS kernel to perform.

In the Unikernel, no operating syste= m exist and the Xen play the role of OS. Is it true?

"It depends.= =E2=80=9D
What do you mean by the operating system?
In = terms of functionality, for a unikernel system, much of the functionality y= ou would usually rely on the operating system to perform (in most cases, by= a kernel) is provided by library code (unikernels =E2=80=94 certainly Mira= ge OS =E2=80=94 are strongly inspired by library operating systems). But no= t all =E2=80=94 if you are using Xen as your host environment then yes, Xen= will provide some of that functionality as well.

The Xen hypervisor can do anythin= g that an OS kernel do???

I don=E2=80=99t think that=E2=80=99s a we= ll-formed question =E2=80=94 first, you probably need to declare what an OS= kernel can do.

The source of photo is: https://github.com/cetic/unikernels

Can you show me = a clear and better diagram about Unikernel?
<= div>
Well, it depends = what you want the diagram to help explain. I don=E2=80=99t have any to hand= right now.

=E2=80=94  
Richard Mortier




------=_Part_3113180_1894218761.1594417498712-- From xen-users-bounces@lists.xenproject.org Fri Jul 10 21:48:42 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 10 Jul 2020 21:48:42 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1ju0sQ-0001aI-MG; Fri, 10 Jul 2020 21:48:14 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1ju0sP-0001ZY-M1 for xen-users@lists.xenproject.org; Fri, 10 Jul 2020 21:48:13 +0000 X-Inumbo-ID: 0a50bf08-c2f7-11ea-9038-12813bfff9fa Received: from sonic310-43.consmr.mail.bf2.yahoo.com (unknown [74.6.135.217]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 0a50bf08-c2f7-11ea-9038-12813bfff9fa; Fri, 10 Jul 2020 21:48:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1594417687; bh=HQlH5T8RAG5JqD12s3+I7mcDWFec3YT49pJfstpN6Lk=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:From:Subject; b=D9mNZTMvyYOfB/HE9MbU9dj7XhGt8rGLE1tNBuPp2yUToJjrQJAegV+B3VfQ402r/6G5n8t0QBH70PxY7ygPmYvMPvIzePWs25TLqXNWa+jgMt7b5exjG7AwK0yf5/xzLiOF+eazpt8w4yc+coLPCjUGw8rhi0Wnf5h+zYoxkvqvLVujqpfi2MY+X9ee3NK4cExuKhevBf3RW0xQx6xvkb69kizt9WbFZErA/0vbk2nlLRYKyg1JJ4YAlNUzeinwf35jGbeDweTQAH+vFEr227oPPDJghbAEqRGhD6KsSSbo8DGdP2c0Fw0R9Z/LAJXEeYuEJNeEDQeZJ46LVf6KPw== X-YMail-OSG: N_6BpMEVRDvd.miR6A7lED5GPdAEx7ojsA-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic310.consmr.mail.bf2.yahoo.com with HTTP; Fri, 10 Jul 2020 21:48:07 +0000 Date: Fri, 10 Jul 2020 21:46:06 +0000 (UTC) From: Jason Long To: "bela.berde@gmail.com" Message-ID: <951520100.3111789.1594417566033@mail.yahoo.com> In-Reply-To: References: <784251130.2623344.1594314570469.ref@mail.yahoo.com> <784251130.2623344.1594314570469@mail.yahoo.com> <1101730410.2975527.1594393256638@mail.yahoo.com> Subject: Re: MirageOS and Unikernel. MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_3111788_2016243221.1594417566032" X-Mailer: WebService/1.1.16197 YahooMailAndroidMobile YMobile/1.0 (com.yahoo.mobile.client.android.mail/6.8.3; Android/7.1.1; NMF26F; bbc100; BlackBerry; BBC100-1; 5.16; 1184x720; ) Content-Length: 6226 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: "hack3rcon@yahoo.com" Cc: "mirageos-devel@lists.xenproject.org" , Xen-users Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" ------=_Part_3111788_2016243221.1594417566032 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable The Rumprun unikernel is KVM. I like Xen. Sent from Yahoo Mail on Android=20 =20 On Fri, Jul 10, 2020 at 11:20 PM, Bela Berde wrote:= =20 On Fri 10 Jul 2020 at 17:05, Jason Long wrote: Thank you Richard.Kernel =3D=3D The libraries that an App need to run. NO Am I right?In the Unikernel, no operating system exist and the Xen play the= role of OS. Is it true? NO The Xen hypervisor can do anything that an OS kernel do??? NO The source of photo is: https://github.com/cetic/unikernels Can you show me a clear and better diagram about Unikernel? The name unikernel means many different things. But a real unikernel has a = definition.=C2=A0It does not need any hypervisor. It essentially needs a Vi= rtual Machine Monitor layer that has nothing to do with Virtual Machine (VM= ).=C2=A0First of all, OS libraries, meaning the OS split into libraries, ar= e linked to the app binary.=C2=A0No OS is needed anymore.=C2=A0Have a look = at Rumprun unikernel for more information, and forget Docker=E2=80=99stuff.= =C2=A0 Sent from Yahoo Mail on Android --=20 Sent from iPad =20 ------=_Part_3111788_2016243221.1594417566032 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable The Rumprun unikernel is KVM. I like Xen.


On Fri, Jul 10, 2020 at 11:20 PM, Bela Berde
<bela.berde@gmail.com> wrote:


On Fri 10 Jul 2020 at 17:05, Jason Long <hack3rcon@yahoo.com> wrote:=
Thank= you Richard.
Kernel =3D=3D The libraries that an App need to r= un.
NO
Am I right?
In the U= nikernel, no operating system exist and the Xen play the role of OS. Is it = true?
NO
The Xen hypervisor can do anything t= hat an OS kernel do???
NO
The source of photo= is: https://github.com/cetic/unikernels

Can you show me a clear and be= tter diagram about Unikernel?

The name unikernel means many different things. But a real unikerne= l has a definition. 
It does not need any hypervisor. It ess= entially needs a Virtual Machine Monitor layer that has nothing to do with = Virtual Machine (VM). 
First of all, OS libraries, meaning t= he OS split into libraries, are linked to the app binary. 
N= o OS is needed anymore. 
Have a look at Rumprun unikernel fo= r more information, and forget Docker=E2=80=99stuff. 
--
Sent from iPad
------=_Part_3111788_2016243221.1594417566032-- From xen-users-bounces@lists.xenproject.org Sat Jul 11 10:37:11 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sat, 11 Jul 2020 10:37:11 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1juCr5-0000pI-9k; Sat, 11 Jul 2020 10:35:39 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1juCr2-0000pD-Qv for xen-users@lists.xenproject.org; Sat, 11 Jul 2020 10:35:37 +0000 X-Inumbo-ID: 40832e38-c362-11ea-908e-12813bfff9fa Received: from ulnar.ocb.by (unknown [138.201.113.237]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 40832e38-c362-11ea-908e-12813bfff9fa; Sat, 11 Jul 2020 10:35:35 +0000 (UTC) Received: from ulnar.ocb.by (localhost [127.0.0.1]) by ulnar.ocb.by (Postfix) with ESMTP id 1AEA140133 for ; Sat, 11 Jul 2020 12:35:34 +0200 (CEST) Authentication-Results: ulnar.ocb.by; dkim=pass (2048-bit key; unprotected) header.d=schramm.by header.i=@schramm.by header.b="ODXzT39G"; dkim-atps=neutral Received: from [IPv6:2a02:8106:f:37fc:329c:23ff:fe9a:9e57] (unknown [IPv6:2a02:8106:f:37fc:329c:23ff:fe9a:9e57]) (Authenticated sender: lists@schramm.by) by ulnar.ocb.by (Postfix) with ESMTPSA id EA9B3400D1 for ; Sat, 11 Jul 2020 12:35:33 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=schramm.by; s=20200415; t=1594463734; bh=wHAMSBtdyXQ7WxUpVMexjrVJZyi789YYJg37VgkQfnE=; h=Subject:To:From:Message-ID:Date:From; b=ODXzT39G+1cId/Oln2U4qWaaxMPc0xxVX4PlQvqT63PTHlZSXb0ONbszWG+uvL5sK x8FSljjjdv0uWqltaiGN3hq09NVnAf0B82y3bBX1ZerArPQVg2RdtpP/AycdiGCK9V l3vxZ8bhlMlehpA9Fnrl7WOi+yk8K3RxNYCz/Auw6xD9blMyDFwRWeg1AeAir9wv4Y K0xvuvwkZe0v8Rx0TwfoObiDD+aaWkEUAxlMGOP7d/0/wYVY9AExS6FmMKl0EpwBFH DK/k7mbL3ZQ+LOEaDTzTrNiNGGLzB3hBkNciwCktozQUsPDFnqflcWDwY8/QlPSxTi t67iGwmzjp/fw== Subject: Re: Debian 10, xen 4.11 reliability To: xen-users@lists.xenproject.org References: From: Holger Schramm Message-ID: <6e81f24a-bff7-ce6e-c5d6-3403ddf5d010@schramm.by> Date: Sat, 11 Jul 2020 12:35:33 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-AV-Checked: ClamSMTP @ Ulnar X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hi, i am running Debian Buster with Xen 4.11 on dozens of machines. works like a charm. but i use a custom kernel, because debian kernel is too old for me. Don't have any problems with it. Could you provide more infos? -- ~Holger From xen-users-bounces@lists.xenproject.org Sat Jul 11 14:26:59 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sat, 11 Jul 2020 14:26:59 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1juGRU-00032I-FI; Sat, 11 Jul 2020 14:25:28 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1juGRT-00032D-5A for xen-users@lists.xenproject.org; Sat, 11 Jul 2020 14:25:27 +0000 X-Inumbo-ID: 5a64f8b6-c382-11ea-8496-bc764e2007e4 Received: from mamuts.risinajumi.lv (unknown [212.70.177.194]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 5a64f8b6-c382-11ea-8496-bc764e2007e4; Sat, 11 Jul 2020 14:25:22 +0000 (UTC) Received: by mamuts.risinajumi.lv (Postfix, from userid 65534) id 2F80E6AFD1; Sat, 11 Jul 2020 17:28:54 +0300 (EEST) X-Spam-Checker-Version: SpamAssassin 3.2.2 (2007-07-23) on mamuts.risinajumi.lv X-Spam-Level: * X-Spam-Status: No, score=1.4 required=9.5 tests=FH_DATE_PAST_20XX autolearn=no version=3.2.2 Received: from smtp.risinajumi.lv (smtp.risinajumi.lv [212.70.177.201]) by mamuts.risinajumi.lv (Postfix) with ESMTP id DC98F6AF9B for ; Sat, 11 Jul 2020 17:28:53 +0300 (EEST) Received: from [192.168.1.7] (unknown [80.89.72.241]) by smtp.risinajumi.lv (Postfix) with ESMTPA id 034DEF1223 for ; Sat, 11 Jul 2020 17:25:20 +0300 (EEST) Subject: Re: Debian 10, xen 4.11 reliability To: xen-users@lists.xenproject.org References: <6e81f24a-bff7-ce6e-c5d6-3403ddf5d010@schramm.by> From: Casper Message-ID: Date: Sat, 11 Jul 2020 17:25:11 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <6e81f24a-bff7-ce6e-c5d6-3403ddf5d010@schramm.by> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hi, I think default Debian kernel with xen not working. I have updated original Debian 10.4 packages from I think 10.0 - all the same. Debian 7 works like charm, I will switch to other kernel or, make own custom to test it. I have md raid with 2-3 discs, tried with raid1 and raid5, it all fails mostly with i/o problem to access some disc, had another issue with e1000e intel driver, but it seems upgrade to latest fixed problem. What more info are interested? Casper On 11.07.20 13:35, Holger Schramm wrote: > Hi, > > i am running Debian Buster with Xen 4.11 on dozens of machines. works > like a charm. but i use a custom kernel, because debian kernel is too > old for me. > > Don't have any problems with it. > > Could you provide more infos? > From xen-users-bounces@lists.xenproject.org Sun Jul 12 17:26:10 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 12 Jul 2020 17:26:10 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jufiG-0002nn-SF; Sun, 12 Jul 2020 17:24:28 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jufiG-0002nh-Cl for xen-users@lists.xenproject.org; Sun, 12 Jul 2020 17:24:28 +0000 X-Inumbo-ID: 896a3f9e-c464-11ea-bca7-bc764e2007e4 Received: from mail-wr1-x432.google.com (unknown [2a00:1450:4864:20::432]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 896a3f9e-c464-11ea-bca7-bc764e2007e4; Sun, 12 Jul 2020 17:24:27 +0000 (UTC) Received: by mail-wr1-x432.google.com with SMTP id b6so10986800wrs.11 for ; Sun, 12 Jul 2020 10:24:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=l8qr0qOfpdqvjmirO6TiuSxNh/VcU7hYfMHxXE9grkI=; b=oktN+zhEroSGltYpzxGf1K/hsRTQ4ZG+8Zh7886M2Ad9StFwFqx9qCzLKNwPufp8gF XofdIc48/XlDT4HhQvFPWavOOFQ8uOgMKMLJ/9pfcTqJV2nWi6R42UCSeX9VKHh6heUY 8bNmDMpRFX/aXz2W5qgI72f0PZkITH/fvleTfqKtSZsDhWi2epkyZ9BUpJ9lcVSWJtnD c5uaLRNtf9IoyvPGxnxOw0mtlMNGxHlZAhg7uPyBC6FXCqM5WLB5FID5i+Q6ecNvW9WX y9FgGula88n+qb1LIlVD7JqrWeIWKdMUFJPlvz/vHzSiSFsKIrGgn9Lse3BGPB/SlYtS PmIw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=l8qr0qOfpdqvjmirO6TiuSxNh/VcU7hYfMHxXE9grkI=; b=IPTUS3QOlian5y3lbwNlV3RVHnykLgwm3KrMRn+LHjAVJK41eq7veTSWxSegrm4Kme UfMt8HYSXTwtiz30MGA6ow/HevBMedb1XLJwVChG+nMXH/57py/Z7/RjwOOpXhDW1KTb IcOVM+La9jO/chVwd2gTeiyswUkyOYsG/9AkjqOazc33iOyaIr/+sqozLBgotAjdd2Pz l6HQUZNwkAuQzuDmDd+KSNJAnMVO5Ch0SGfiqJOr2PzmJZnxPSNJ3mRlYSiFMCimdtxt 15Bkt8TmMay30nsaoPyJOFaE8XRxWIVL5jy/4PeTcnatIxwdl/GYrd9mN/yrZU98HvhS LYKw== X-Gm-Message-State: AOAM533dmHYJQcqE0U4j8kmfmLjM+GnclEqPbXGrRBKF1zTaflfBn6kg sdCVy39gzJKPq0flncsGzOGjokmQOmsDI42dt4T2yiu3Lf4= X-Google-Smtp-Source: ABdhPJwUnWDl6ZIWhMJxoJB+QAmgKRDB6mm0D6kMGRf+4E0qz4/21jvxRaX5iEJvDP01CCB8vV7xxPZ4V5Tmfjw42eA= X-Received: by 2002:a2e:b8ce:: with SMTP id s14mr44492550ljp.89.1594574184821; Sun, 12 Jul 2020 10:16:24 -0700 (PDT) MIME-Version: 1.0 From: Mario Marietto Date: Sun, 12 Jul 2020 19:15:48 +0200 Message-ID: Subject: vncviewer tells that "guest has not initialized the display (yet)" and it is freezed there forever (trying to boot a phisycal installation of windows 10 64 bit with the ovmf bios) To: xen-users@lists.xenproject.org Content-Type: multipart/alternative; boundary="000000000000dab87d05aa41bb99" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --000000000000dab87d05aa41bb99 Content-Type: text/plain; charset="UTF-8" Hello. I'm a new xen user. I'm learning how works the xen hypervisor that I have installed on ubuntu 20.04 with the command : apt install xen-hypervisor. I want to boot the phisycal installation of windows 10 x64 bit that I have on /dev/sdb,which belong to these partitions : Disk /dev/sdb: 465,78 GiB, 500107862016 bytes, 976773168 sectors Disk model: Samsung SSD 860 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: 98970711-6557-43CB-86D8-14B5F013ECFD Dispositivo Start Fine Settori Size Tipo /dev/sdb1 34 262177 262144 128M Microsoft reserved /dev/sdb2 264192 1286143 1021952 499M Windows recovery environment /dev/sdb3 1286144 1488895 202752 99M EFI System /dev/sdb4 1488896 975591423 974102528 464,5G Microsoft basic data /dev/sdb5 975591424 976773119 1181696 577M Windows recovery environment this is the cfg file that I'm using : builder = 'hvm' bios='ovmf' vif = [ 'type=ioemu, bridge=xenbr0' ] memory = 8192 name = "windows-10" # domain prefix name disk = [ 'phy:/dev/sdb,ioemu:sdb,w' ] boot = "c" vncconsole=1 vfb = [ 'type=vnc,vnclisten=127.0.0.1,vncdisplay=1' ] vcpus = 6 # number of cpu's to assign stdvga = 0 serial = 'pty' usbdevice = 'tablet' # Required for USB mouse on_poweroff = 'destroy' on_reboot = 'destroy' on_crash = 'preserve' device_model_args_hvm = [ # Debug OVMF '-chardev', 'file,id=debugcon,path=/etc/xen/ovmf.log,', '-device', 'isa-debugcon,iobase=0x402,chardev=debugcon', ] I run this script : #!/bin/bash sudo /etc/init.d/xencommons start sudo /etc/init.d/xendomains start sudo /etc/init.d/xen-watchdog start sudo /etc/init.d/xendriverdomain start xl create xenwin.cfg but vncviewer tells that "guest has not initialized the display (yet)" and it is freezed there forever. some help ? -- Mario. --000000000000dab87d05aa41bb99 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello.

I'm a new xen use= r. I'm learning how works the xen hypervisor that I have installed on u= buntu 20.04 with the command : apt install xen-hypervisor. I want to boot t= he phisycal installation of windows 10 x64 bit that I have on /dev/sdb,whic= h belong to these partitions :

Disk /dev/sdb: 465,= 78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: Samsung SSD 86= 0
Units: sectors of 1 * 512 =3D 512 bytes
Sector size (logical/physi= cal): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 = bytes
Disklabel type: gpt
Disk identifier: 98970711-6557-43CB-86D8-14= B5F013ECFD

Dispositivo =C2=A0 =C2=A0 Start =C2=A0 =C2=A0 =C2=A0Fine = =C2=A0 Settori =C2=A0 Size Tipo
/dev/sdb1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A034 =C2=A0 =C2=A0262177 =C2=A0 =C2=A0262144 =C2=A0 128M Microsoft rese= rved
/dev/sdb2 =C2=A0 =C2=A0 =C2=A0264192 =C2=A0 1286143 =C2=A0 1021952 = =C2=A0 499M Windows recovery environment
/dev/sdb3 =C2=A0 =C2=A0 1286144= =C2=A0 1488895 =C2=A0 =C2=A0202752 =C2=A0 =C2=A099M EFI System
/dev/sdb= 4 =C2=A0 =C2=A0 1488896 975591423 974102528 464,5G Microsoft basic data
= /dev/sdb5 =C2=A0 975591424 976773119 =C2=A0 1181696 =C2=A0 577M Windows rec= overy environment

this is the cfg file that I'= m using :

builder =3D 'hvm'
bios=3D'= ;ovmf'
vif =3D [ 'type=3Dioemu, bridge=3Dxenbr0' ]
memory= =3D 8192
name =3D "windows-10" # domain prefix name
disk = =3D [ 'phy:/dev/sdb,ioemu:sdb,w' ]
boot =3D "c"
vnc= console=3D1
vfb =3D [ 'type=3Dvnc,vnclisten=3D127.0.0.1,vncdisplay= =3D1' ]
vcpus =3D 6 # number of cpu's to assign
stdvga =3D 0<= br>serial =3D 'pty'
usbdevice =3D 'tablet' # Required fo= r USB mouse
on_poweroff =3D 'destroy'
on_reboot =C2=A0 =3D &#= 39;destroy'
on_crash =C2=A0 =C2=A0=3D 'preserve'

devi= ce_model_args_hvm =3D [
=C2=A0 # Debug OVMF
=C2=A0 '-chardev'= , 'file,id=3Ddebugcon,path=3D/etc/xen/ovmf.log,',
=C2=A0 '-d= evice', 'isa-debugcon,iobase=3D0x402,chardev=3Ddebugcon',
]<= /div>

I run this script :

#!/bi= n/bash

sudo /etc/init.d/xencommons start
sudo /etc/init.d/xendoma= ins start
sudo /etc/init.d/xen-watchdog start
sudo /etc/init.d/xendri= verdomain start
xl create xenwin.cfg

but vncvie= wer tells that "guest has not initialized the display (yet)" and = it is freezed there forever. some help ?

--
Mario= .
--000000000000dab87d05aa41bb99-- From xen-users-bounces@lists.xenproject.org Sun Jul 12 22:55:16 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 12 Jul 2020 22:55:16 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jukrE-000477-Qw; Sun, 12 Jul 2020 22:54:04 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jukrD-000472-H4 for xen-users@lists.xenproject.org; Sun, 12 Jul 2020 22:54:03 +0000 X-Inumbo-ID: 9444f854-c492-11ea-b7bb-bc764e2007e4 Received: from mail-by.bbox.fr (unknown [2001:860:e200:0:c000::b]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 9444f854-c492-11ea-b7bb-bc764e2007e4; Sun, 12 Jul 2020 22:54:02 +0000 (UTC) Received: from mail.jppozzi.dyndns.org (mer91-h01-176-172-74-140.dsl.sta.abo.bbox.fr [176.172.74.140]) by mail-by.bbox.fr (Postfix) with ESMTP id 185C635; Mon, 13 Jul 2020 00:53:59 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mail.jppozzi.dyndns.org (Postfix) with ESMTP id 7A47C3E00DA; Mon, 13 Jul 2020 00:53:59 +0200 (CEST) Received: from mail.jppozzi.dyndns.org ([127.0.0.1]) by localhost (mail.jppozzi.dyndns.org [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id CEmf7EgWTK1F; Mon, 13 Jul 2020 00:53:59 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mail.jppozzi.dyndns.org (Postfix) with ESMTP id 27F613E04DC; Mon, 13 Jul 2020 00:53:59 +0200 (CEST) X-Virus-Scanned: amavisd-new at mail.jppozzi.dyndns.org Received: from mail.jppozzi.dyndns.org ([127.0.0.1]) by localhost (mail.jppozzi.dyndns.org [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id Pxk5iaE9stcw; Mon, 13 Jul 2020 00:53:59 +0200 (CEST) Received: from mail.jppozzi.dyndns.org (tmail.jpp.fr [192.168.2.21]) by mail.jppozzi.dyndns.org (Postfix) with ESMTP id 073213E00DC; Mon, 13 Jul 2020 00:53:59 +0200 (CEST) Date: Mon, 13 Jul 2020 00:53:58 +0200 (CEST) From: JP P To: Casper Message-ID: <604094370.487.1594594438720.JavaMail.zimbra@jppozzi.dyndns.org> In-Reply-To: References: <6e81f24a-bff7-ce6e-c5d6-3403ddf5d010@schramm.by> Subject: Re: Debian 10, xen 4.11 reliability MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [192.168.2.8] X-Mailer: Zimbra 8.8.15_GA_3955 (ZimbraWebClient - GC79 (Linux)/8.8.15_GA_3953) Thread-Topic: Debian 10, xen 4.11 reliability Thread-Index: 0E8vfKcJBYykxgdYv5tiy7c6+MTRrA== X-VADE-SPAMSTATE: clean X-VADE-SPAMSCORE: 0 X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeduiedrvdejgdduiecutefuodetggdotefrodftvfcurfhrohhfihhlvgemuceuqfgfjgfifgfgufdpucfqfgfvpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedttdenucenucfjughrpeffhffvkfgjfhfugggtgfhiofhtsehtqhgttdertdejnecuhfhrohhmpeflrfcurfcuoehjphhpsehjphhpohiiiihirdguhihnughnshdrohhrgheqnecuggftrfgrthhtvghrnhepuedugeeftdevfeegtdegjeejfeekleefteelhfelteeiieetffejfeehiefhudegnecukfhppedujeeirddujedvrdejgedrudegtddpudelvddrudeikedrvddrkeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedujeeirddujedvrdejgedrudegtddphhgvlhhopehmrghilhdrjhhpphhoiiiiihdrugihnhgunhhsrdhorhhgpdhmrghilhhfrhhomheplffrucfruceojhhpphesjhhpphhoiiiiihdrugihnhgunhhsrdhorhhgqedprhgtphhtthhopeigvghnqdhushgvrhhssehlihhsthhsrdigvghnphhrohhjvggtthdrohhrghdprhgtphhtthhopehklhesohhsrdhlvh X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xenproject.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hello, I try with some different kernels : Debian 5.4, 5.5,=20 "Home made" with some kernels 5.6, 5.7 with no more luck. Raid disks (RAID 0 here) are never recognized ... and I can't boot with XEN= , I had to use KVM to start different virtual machines ...=20 Xen 4.11 is definitely dead for me. Regards JP P ----- Mail original ----- De: "Casper" =C3=80: xen-users@lists.xenproject.org Envoy=C3=A9: Samedi 11 Juillet 2020 16:25:11 Objet: Re: Debian 10, xen 4.11 reliability Hi, I think default Debian kernel with xen not working. I have updated original Debian 10.4 packages from I think 10.0 - all the=20 same. Debian 7 works like charm, I will switch to other kernel or, make own=20 custom to test it. I have md raid with 2-3 discs, tried with raid1 and raid5, it all fails=20 mostly with i/o problem to access some disc, had another issue with=20 e1000e intel driver, but it seems upgrade to latest fixed problem. What more info are interested? Casper On 11.07.20 13:35, Holger Schramm wrote: > Hi, >=20 > i am running Debian Buster with Xen 4.11 on dozens of machines. works=20 > like a charm. but i use a custom kernel, because debian kernel is too=20 > old for me. >=20 > Don't have any problems with it. >=20 > Could you provide more infos? > From xen-users-bounces@lists.xenproject.org Mon Jul 13 17:04:02 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 13 Jul 2020 17:04:02 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jv1qF-0001Ke-Ku; Mon, 13 Jul 2020 17:02:11 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jv1qE-0001KZ-Gy for xen-users@lists.xenproject.org; Mon, 13 Jul 2020 17:02:10 +0000 X-Inumbo-ID: 95d774ba-c52a-11ea-8496-bc764e2007e4 Received: from syrinx.knorrie.org (unknown [82.94.188.77]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 95d774ba-c52a-11ea-8496-bc764e2007e4; Mon, 13 Jul 2020 17:02:08 +0000 (UTC) Received: from [IPv6:2a02:a213:2b80:f000::12] (unknown [IPv6:2a02:a213:2b80:f000::12]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by syrinx.knorrie.org (Postfix) with ESMTPSA id C26D56099A273; Mon, 13 Jul 2020 19:02:07 +0200 (CEST) Subject: Re: Debian 10, xen 4.11 reliability To: xen-users@lists.xenproject.org, Casper References: From: Hans van Kranenburg Autocrypt: addr=hans@knorrie.org; keydata= mQINBFo2pooBEADwTBe/lrCa78zuhVkmpvuN+pXPWHkYs0LuAgJrOsOKhxLkYXn6Pn7e3xm+ ySfxwtFmqLUMPWujQYF0r5C6DteypL7XvkPP+FPVlQnDIifyEoKq8JZRPsAFt1S87QThYPC3 mjfluLUKVBP21H3ZFUGjcf+hnJSN9d9MuSQmAvtJiLbRTo5DTZZvO/SuQlmafaEQteaOswme DKRcIYj7+FokaW9n90P8agvPZJn50MCKy1D2QZwvw0g2ZMR8yUdtsX6fHTe7Ym+tHIYM3Tsg 2KKgt17NTxIqyttcAIaVRs4+dnQ23J98iFmVHyT+X2Jou+KpHuULES8562QltmkchA7YxZpT 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vT3RH0/CpPJgveWV5xDOKuhD8j5l7FME+t2RWP+gyLid6dE0C7J03ir90PlTEkMEHEzyJMPt OhO05Phy+d51WPTo1VSKxhL4bsWddHLfQoXW8RQ388Q69JG4m+JhNH/XvWe3aQFpYP+GZuzO hkMez0lHCaVOOLBSKHkAHh9i0/pH+/3hfEa4NsoHCpyy Message-ID: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> Date: Mon, 13 Jul 2020 19:02:07 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hi Casper, On 7/9/20 10:45 AM, Casper wrote: > > I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 kernel with > Xen 4.1.4 on some servers still work very reliable with no problems, > only wanted to change new hard discs pushed me to install new Debian 10 > with Xen packages to newer version. > > Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen > 4.11.4-pre all crashes in 1-2weeks. In start I was blaming HW, but now > it repeats in old reliable servers too. My config is I have 2-3 hard > discs per server node and RAID1 with sw md raid, it crashes with md lost > access for disc. After reboot all works as it should. > > I tested different HW and discs, all the same problems. > Loads are no big, just few testing DomU nodes. > Any suggestion? I`m currently running latest Debian kernel 4.19 was > thinking to downgrade to test different kernel. > Or problem with Debian Xen package as it not so popular anymore? > Any suggestion what to test to figure out problem? The first suggestion is, like Sarah also mentions, capturing logging, and providing that. Also, all details possible, do not leave out minor things that you think "this for sure won't cause it" about. Even your raid controller type. Does the entire machine crash? Or does only a virtual machine crash? Are the domUs also Debian Buster? If something crashes, can you still login to the dom0? Can you do dmesg and xl dmesg there? If a domU crashes, then enable logging of the xen console to log files on the dom0. Also look at xl dmesg to see if there's anything added while it happens, pointing at Xen choosing to destroy the domU when it's trying to do something that's absolutely not allowed. If it completely crashes, then you need a serial console to capture whatever it tries to tell you in the last breath, because, otherwise it's invisible. Use loglvl=all and guest_loglvl=all on the hypervisor command line (GRUB_CMDLINE_XEN_DEFAULT in /etc/default/grub.d/xen.cfg). Also, at least update to newest xen and kernel packages in Buster. That's 4.11.4+24-gddaaccbbab-1~deb10u1 for Xen and 4.19.118-2+deb10u1 for Linux. When only saying 'it does not work', nobody can help you. Hans From xen-users-bounces@lists.xenproject.org Mon Jul 13 23:44:41 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 13 Jul 2020 23:44:41 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jv86f-0001CR-8N; Mon, 13 Jul 2020 23:43:33 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jv86d-0001CM-OR for xen-users@lists.xenproject.org; Mon, 13 Jul 2020 23:43:31 +0000 X-Inumbo-ID: a52e069e-c562-11ea-92c0-12813bfff9fa Received: from hammer.websitemanagers.com.au (unknown [59.100.172.130]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id a52e069e-c562-11ea-92c0-12813bfff9fa; Mon, 13 Jul 2020 23:43:27 +0000 (UTC) Received: (qmail 31363 invoked by uid 1011); 13 Jul 2020 23:16:44 -0000 Received: from 192.168.5.112 by hammer (envelope-from , uid 1008) with qmail-scanner-1.24 (clamdscan: 0.102.1/25872. spamassassin: 3.4.2. 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Processed in 0.040442 secs); 13 Jul 2020 23:16:44 -0000 Received: from unknown (HELO ADAM-MBP.local) (adamg+websitemanagers.com.au@192.168.5.112) by 0 with ESMTPA; 13 Jul 2020 23:16:44 -0000 Subject: Re: Debian 10, xen 4.11 reliability To: xen-users@lists.xenproject.org References: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> From: Adam Goryachev Organization: Website Managers Message-ID: <43b22817-71c6-c2ef-4998-31ebf5d0b863@websitemanagers.com.au> Date: Tue, 14 Jul 2020 09:16:44 +1000 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 14/7/20 03:02, Hans van Kranenburg wrote: > Hi Casper, > > On 7/9/20 10:45 AM, Casper wrote: >> I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 kernel with >> Xen 4.1.4 on some servers still work very reliable with no problems, >> only wanted to change new hard discs pushed me to install new Debian 10 >> with Xen packages to newer version. >> >> Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen >> 4.11.4-pre all crashes in 1-2weeks. In start I was blaming HW, but now >> it repeats in old reliable servers too. My config is I have 2-3 hard >> discs per server node and RAID1 with sw md raid, it crashes with md lost >> access for disc. After reboot all works as it should. >> >> I tested different HW and discs, all the same problems. >> Loads are no big, just few testing DomU nodes. >> Any suggestion? I`m currently running latest Debian kernel 4.19 was >> thinking to downgrade to test different kernel. >> Or problem with Debian Xen package as it not so popular anymore? >> Any suggestion what to test to figure out problem? BTW, I don't think is a general rule that Debian 10.4 with packages Xen 4.11 doesn't work. I have a couple of Debian 11 boxes running multiple DomU's and they are working well: ii  libxencall1:i386 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen runtime library - libxencall ii  libxendevicemodel1:i386 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen runtime libraries - libxendevicemodel ii  libxenevtchn1:i386 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen runtime libraries - libxenevtchn ii  libxenforeignmemory1:i386 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen runtime libraries - libxenforeignmemory ii  libxengnttab1:i386 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen runtime libraries - libxengnttab ii  libxenmisc4.11:i386 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen runtime libraries - miscellaneous, versioned ABI ii  libxenstore3.0:i386 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen runtime libraries - libxenstore ii  libxentoolcore1:i386 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen runtime libraries - libxentoolcore ii  libxentoollog1:i386 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen runtime libraries - libxentoollog ii  xen-hypervisor-4.11-amd64 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen Hypervisor on AMD64 ii  xen-hypervisor-common 4.11.3+24-g14b62ab3e5-1~deb10u1 all          Xen Hypervisor - common files ii  xen-utils-4.11 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         XEN administrative tools ii  xen-utils-common 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xen administrative tools - common files ii  xenstore-utils 4.11.3+24-g14b62ab3e5-1~deb10u1 i386         Xenstore command line utilities for Xen Linux flail 4.19.0-9-686-pae #1 SMP Debian 4.19.118-2+deb10u1 (2020-06-07) i686 GNU/Linux  09:15:19 up 29 days, 12:56,  2 users,  load average: 0.23, 0.19, 0.18 (This machine was only recently updated, hence a recent reboot, but almost a month seems a lot longer than what is being complained about here) So, YMMV, but I think you will definitely need to provide more detailed information on what happens if you are even slightly interested in finding and fixing the cause. Regards, Adam From xen-users-bounces@lists.xenproject.org Tue Jul 14 09:03:30 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Tue, 14 Jul 2020 09:03:30 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvGo0-0008NE-NR; Tue, 14 Jul 2020 09:00:52 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvGnz-0008N9-4e for xen-users@lists.xenproject.org; Tue, 14 Jul 2020 09:00:51 +0000 X-Inumbo-ID: 82e71514-c5b0-11ea-8496-bc764e2007e4 Received: from syrinx.knorrie.org (unknown [82.94.188.77]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 82e71514-c5b0-11ea-8496-bc764e2007e4; Tue, 14 Jul 2020 09:00:49 +0000 (UTC) Received: from [IPv6:2a02:a213:2b80:f000::12] (unknown [IPv6:2a02:a213:2b80:f000::12]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by syrinx.knorrie.org (Postfix) with ESMTPSA id 7CB7F6099B656; Tue, 14 Jul 2020 11:00:48 +0200 (CEST) Subject: Re: Debian 10, xen 4.11 reliability To: Adam Goryachev , xen-users@lists.xenproject.org, Casper References: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> <43b22817-71c6-c2ef-4998-31ebf5d0b863@websitemanagers.com.au> From: Hans van Kranenburg Autocrypt: addr=hans@knorrie.org; keydata= mQINBFo2pooBEADwTBe/lrCa78zuhVkmpvuN+pXPWHkYs0LuAgJrOsOKhxLkYXn6Pn7e3xm+ ySfxwtFmqLUMPWujQYF0r5C6DteypL7XvkPP+FPVlQnDIifyEoKq8JZRPsAFt1S87QThYPC3 mjfluLUKVBP21H3ZFUGjcf+hnJSN9d9MuSQmAvtJiLbRTo5DTZZvO/SuQlmafaEQteaOswme DKRcIYj7+FokaW9n90P8agvPZJn50MCKy1D2QZwvw0g2ZMR8yUdtsX6fHTe7Ym+tHIYM3Tsg 2KKgt17NTxIqyttcAIaVRs4+dnQ23J98iFmVHyT+X2Jou+KpHuULES8562QltmkchA7YxZpT mLMZ6TPit+sIocvxFE5dGiT1FMpjM5mOVCNOP+KOup/N7jobCG15haKWtu9k0kPz+trT3NOn gZXecYzBmasSJro60O4bwBayG9ILHNn+v/ZLg/jv33X2MV7oYXf+ustwjXnYUqVmjZkdI/pt 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Message-ID: <9d58daf3-133f-2157-ed18-c8ab020f9627@knorrie.org> Date: Tue, 14 Jul 2020 11:00:48 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <43b22817-71c6-c2ef-4998-31ebf5d0b863@websitemanagers.com.au> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 7/14/20 1:16 AM, Adam Goryachev wrote: > > On 14/7/20 03:02, Hans van Kranenburg wrote: >> Hi Casper, >> >> On 7/9/20 10:45 AM, Casper wrote: >>> [...] >>> Or problem with Debian Xen package as it not so popular anymore? >>> Any suggestion what to test to figure out problem? > > BTW, I don't think is a general rule that Debian 10.4 with packages Xen > 4.11 doesn't work. True. It just works (tm), until you have some edge case hardware that misbehaves, or you run into an edge case bug with a very specific combination of non-default configuration here and there (or when you try to use EFI, cough). So, to add to the list: * Run latest BIOS / cpu microcode that is available. * Other firmware, e.g. for raid controller or whatever? * Is the box using ECC memory? I mean, even a memory module that flips a bit now and then can crash a server every few weeks... Run a memtest or 7zip benchmark or what was the thing that's very good at exposing memory errors... Also, feel free to open a bug report in the Debian bug tracker, we're willing to help, but expect that you have to do the work to gather all info. I don't have a similar piece of hardware lying around here... What distro package maintainers can do is help users to gather enough info to have a good report that doesn't waste too much time of the upstream developers. Hans (also member of Debian Xen team) P.S. About the EFI thing, apparently that often does not work, testers wanted to figure out in what cases, and how to make it work! From xen-users-bounces@lists.xenproject.org Tue Jul 14 14:44:27 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Tue, 14 Jul 2020 14:44:27 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvM8z-0004pn-2g; Tue, 14 Jul 2020 14:42:53 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvM8x-0004pi-Qy for xen-users@lists.xenproject.org; Tue, 14 Jul 2020 14:42:51 +0000 X-Inumbo-ID: 4b0b210a-c5e0-11ea-8496-bc764e2007e4 Received: from mail-qk1-x741.google.com (unknown [2607:f8b0:4864:20::741]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 4b0b210a-c5e0-11ea-8496-bc764e2007e4; Tue, 14 Jul 2020 14:42:51 +0000 (UTC) Received: by mail-qk1-x741.google.com with SMTP id e13so15780585qkg.5 for ; Tue, 14 Jul 2020 07:42:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=oNzd+sJABJQJ4mqf44kBQQVMB6rZdhkTnyVni+C8tV8=; b=t5a8pFeEKHS7gz7hs3RFL0XqndzyEKdqlqx3ET/3tr5LTs6YDcE+Rh87ShDmtNUihs MVKFsChj0J3c+yFc0G72TyX/BWZMkYozL0L11ebCniuD50vDAS4JguZR77jCd1cwgQ8d CNMUSDT4B/RYm6FcVlm1hiQlp7kZi7/rNOx0+T2tGQ+WFkWp3y6DykD78+iMeP0RH8fM zhfmjmDNS3XEzEfutvXWpb4Ig5FOQK2hYxHvZL/YjWoG107yMziOHOKbGWqcNzth+3aC hCViOn6YkaEiGvJN6m7/jc86BuAh0uo99eeleGbN5HA/T10NLxhnD5WLFtMotBoELPWR MPMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=oNzd+sJABJQJ4mqf44kBQQVMB6rZdhkTnyVni+C8tV8=; b=Glngvn7b9RniO4cz8tJiECPCXIldFe7j69vXFjnRKlLm26zHbjmMnWCUbpGfGlSdaz DNY/y6Ufyiv6M4VmrMa5SDwNN2beI3KF7wfwtxPVLDK+AL2AziqyVgpUADYjvYO2MYKy FSXyAgPbJ0aFU3E+EkzyMIB+pRUMa79WP4Ina03q4EtSharcTUy04ncnufajzsrSsYWS XSiraDkxCQ8W5MwGzW+yr4/JwmXss9IrbDbCm7AOMbLoiCenmEJYztYCUVAwiRYC2Zp+ SVwe4LeC5njKrbUZZCtH3HiyGTptnkvf4aAPZ5sVhCgvYtEaTAGQntsinXgMbKxHlGxj LR6w== X-Gm-Message-State: AOAM532umFls+dCQhkYsSTdaWzsTaiVbqj3/KXrEYzvVouKSlcvxSSoC pwXxCSiT3R7o13us7PqgjbhXWj3hDevSttrIUri8/ebe X-Google-Smtp-Source: ABdhPJxBjJfTx1E0rNyOeazrGGRt5kCYnfLf1VXgIjucL2T8zKxTkppNgnXc2tk88zwPh9uyIyHz0wOIh53Dipo+xKk= X-Received: by 2002:a37:a55:: with SMTP id 82mr4596484qkk.294.1594737770606; Tue, 14 Jul 2020 07:42:50 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:ac8:6795:0:0:0:0:0 with HTTP; Tue, 14 Jul 2020 07:42:50 -0700 (PDT) In-Reply-To: References: From: Tomas Mozes Date: Tue, 14 Jul 2020 16:42:50 +0200 Message-ID: Subject: Re: Debian 10, xen 4.11 reliability To: Casper Content-Type: multipart/alternative; boundary="00000000000053b31705aa67d24e" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "xen-users@lists.xenproject.org" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --00000000000053b31705aa67d24e Content-Type: text/plain; charset="UTF-8" On Thursday, July 9, 2020, Casper wrote: > Hello, > > I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 kernel with Xen 4.1.4 on some servers still work very reliable with no problems, only wanted to change new hard discs pushed me to install new Debian 10 with Xen packages to newer version. > > Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen 4.11.4-pre all crashes in 1-2weeks. In start I was blaming HW, but now it repeats in old reliable servers too. My config is I have 2-3 hard discs per server node and RAID1 with sw md raid, it crashes with md lost access for disc. After reboot all works as it should. > > I tested different HW and discs, all the same problems. > Loads are no big, just few testing DomU nodes. > Any suggestion? I`m currently running latest Debian kernel 4.19 was thinking to downgrade to test different kernel. > Or problem with Debian Xen package as it not so popular anymore? > Any suggestion what to test to figure out problem? > > Sincerely, > Casper > > Just a blind shoot - which scheduler are you using? If credit2, try credit legacy. https://wiki.gentoo.org/wiki/Xen#Xen_domU_hanging_with_Xen_4.12.2B --00000000000053b31705aa67d24e Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

On Thursday, July 9, 2020, Casper <k= l@os.lv> wrote:
> Hello,
>
> I have used Debian/Xe= n dom0 for many years, Debian 7, 3.2.41 kernel with Xen 4.1.4 on some serve= rs still work very reliable with no problems, only wanted to change new har= d discs pushed me to install new Debian 10 with Xen packages to newer versi= on.
>
> Where I reinstall Debian 10, latest 4.19 kernel it come= s with Xen 4.11.4-pre all crashes in 1-2weeks. In start I was blaming HW, b= ut now it repeats in old reliable servers too. My config is I have 2-3 hard= discs per server node and RAID1 with sw md raid, it crashes with md lost a= ccess for disc. After reboot all works as it should.
>
> I test= ed different HW and discs, all the same problems.
> Loads are no big,= just few testing DomU nodes.
> Any suggestion? I`m currently running= latest Debian kernel 4.19 was thinking to downgrade to test different kern= el.
> Or problem with Debian Xen package as it not so popular anymore= ?
> Any suggestion what to test to figure out problem?
>
>= ; Sincerely,
> Casper
>
>

Just a blind shoot - whi= ch scheduler are you using? If credit2, try credit legacy.

htt= ps://wiki.gentoo.org/wiki/Xen#Xen_domU_hanging_with_Xen_4.12.2B --00000000000053b31705aa67d24e-- From xen-users-bounces@lists.xenproject.org Tue Jul 14 16:04:20 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Tue, 14 Jul 2020 16:04:20 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvNOk-00042x-6J; Tue, 14 Jul 2020 16:03:14 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvNOi-00042s-KW for xen-users@lists.xenproject.org; Tue, 14 Jul 2020 16:03:12 +0000 X-Inumbo-ID: 8448fb6c-c5eb-11ea-8496-bc764e2007e4 Received: from mail-il1-x144.google.com (unknown [2607:f8b0:4864:20::144]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 8448fb6c-c5eb-11ea-8496-bc764e2007e4; Tue, 14 Jul 2020 16:03:11 +0000 (UTC) Received: by mail-il1-x144.google.com with SMTP id k6so14636991ili.6 for ; Tue, 14 Jul 2020 09:03:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=9hCIW3aH5kyIpF0jnm3ngs1AcK4Vn+eVsaj+3bhjkEk=; b=by/6ejqSu6uQHLNnKQWaYu8jzADSgmEhlsaA9maz+cuASzoo7aoJyN/k9FHOPLkmK9 fNqJG/qg8SQcIriy5+5M+V5FhuJeBKQN0C+pLoFeDc6g/FHR4ait8Zc2ntoh6pve76XE fau51dtGoyC9BKQuvK9bGzf89UDbcoSKzwspXM9oPXmKuqKMf4/P0Bbwc69oNkSmzGR7 x0/vEdNa5e1AF2IT/H9n6Vd5WX9mNsKL1fEUMtA7kowBOrru6hDlT7JuQ80stEh6AECC Gr5hDIXk0qRQS7Dn2WsXHRFui6KuTb+Rmk/niI9Li3ceU67b1DihoefUWvHM5JBZA7q2 O7KQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=9hCIW3aH5kyIpF0jnm3ngs1AcK4Vn+eVsaj+3bhjkEk=; b=c0V/rejXuRbnYwXtpKerZr4slzWHBXerhS27JxqAWjnPMQke7gPTICpYygP7Q7DLzP aRuarOLdUqcYXyOEPKNvpH+QgKlWa376W5/Z1ppUvi+5NsDR2E+ebfd9ZOpeSTDafnhF aE/LpWHbSizMfvDUBkM3Ktz7wrROrkr1nUy+sxjitdjxplpb/5ju2Yas8mBljOFUQ/vi xQrkxtzDsSTLRnUIyg/ZvYUmddIJFqtlIqFfTl7D0Cq+cg/JUZaROG+JtbB8guXRlg0c x4dUeiwdAiN02YkkPuywg7nZE+ghVdxONoFCXuiIJri3Toc9zluPMi/dDxEpvzkmiIDL hNAw== X-Gm-Message-State: AOAM533k5DpLCgAI+j7m8QOKyOVndxYrYTnMbRPEun7q+OckJ/Fa7fnS rdHpB5g44b+C+O1kdunnH3ZRDtu3Zphgxzhqmgc= X-Google-Smtp-Source: ABdhPJzRumALHsVCoxkUEZJmdZidHYRiErLkopnEQuBm2aKMtbt1iRMvfQiM8Ol837hKqpHON4BsDfGVWqBRzH54W1c= X-Received: by 2002:a92:1592:: with SMTP id 18mr5333494ilv.17.1594742591094; Tue, 14 Jul 2020 09:03:11 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Nick Calvert Date: Tue, 14 Jul 2020 17:03:00 +0100 Message-ID: Subject: Re: Debian 10, xen 4.11 reliability To: Tomas Mozes Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Casper , "xen-users@lists.xenproject.org" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Another blind shot and this may not be very helpful, but I have seen general instability with 4.11 on certain hardware that was never fully diagnosed. It appears to be magically resolved on newer versions. I suspected this: https://xenbits.xen.org/xsa/advisory-294.html at the time as some silicon was changed (but not underlying hardware platform), introducing PCID in all cases. I did not prove this and it was not a denial of service failure mode. If you can, perhaps building from source or applying that patch could help. Please let us know how you get on, issues like this are always very frustrating. On Tue, 14 Jul 2020 at 15:46, Tomas Mozes wrote: > > > > On Thursday, July 9, 2020, Casper wrote: > > Hello, > > > > I have used Debian/Xen dom0 for many years, Debian 7, 3.2.41 kernel wit= h Xen 4.1.4 on some servers still work very reliable with no problems, only= wanted to change new hard discs pushed me to install new Debian 10 with Xe= n packages to newer version. > > > > Where I reinstall Debian 10, latest 4.19 kernel it comes with Xen 4.11.= 4-pre all crashes in 1-2weeks. In start I was blaming HW, but now it repeat= s in old reliable servers too. My config is I have 2-3 hard discs per serve= r node and RAID1 with sw md raid, it crashes with md lost access for disc. = After reboot all works as it should. > > > > I tested different HW and discs, all the same problems. > > Loads are no big, just few testing DomU nodes. > > Any suggestion? I`m currently running latest Debian kernel 4.19 was thi= nking to downgrade to test different kernel. > > Or problem with Debian Xen package as it not so popular anymore? > > Any suggestion what to test to figure out problem? > > > > Sincerely, > > Casper > > > > > > Just a blind shoot - which scheduler are you using? If credit2, try credi= t legacy. > > https://wiki.gentoo.org/wiki/Xen#Xen_domU_hanging_with_Xen_4.12.2B From xen-users-bounces@lists.xenproject.org Wed Jul 15 16:01:03 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 15 Jul 2020 16:01:03 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvjol-0007jc-IA; Wed, 15 Jul 2020 15:59:35 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvjok-0007iB-Er for xen-users@lists.xenproject.org; Wed, 15 Jul 2020 15:59:34 +0000 X-Inumbo-ID: 26c6066e-c6b4-11ea-8496-bc764e2007e4 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 26c6066e-c6b4-11ea-8496-bc764e2007e4; Wed, 15 Jul 2020 15:59:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Reply-To:Message-Id:Date:Subject:To:From:Sender:Cc: MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=f3yeW6sSSoYP7f3EUuNv6OxXPwLcAHQm+R6d13VyfOk=; b=5mfnarL1bmdj/Run/5T+UjZKHo /MXYkYfu3cEAfgFzFCIJhC5lfJR7R5QAyi8ZQTvSzBXLu3cfzeTwC6uSA8NoK++K17B1siA4suQiw 72M8kX81JnLJBGMdBH20cMufksgLif2CJ7NQXooM2+E8wRM6ge/fYn4gFlkRjRT6C8rU=; Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvjoZ-00013U-Ce; Wed, 15 Jul 2020 15:59:23 +0000 Received: from 54-240-197-235.amazon.com ([54.240.197.235] helo=CBG-R90WXYV0.amazon.com) by xenbits.xenproject.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jvjoZ-0001SJ-1N; Wed, 15 Jul 2020 15:59:23 +0000 From: Paul Durrant To: xen-devel@lists.xenproject.org, xen-users@lists.xenproject.org, xen-announce@lists.xenproject.org Subject: Xen 4.14 RC6 Date: Wed, 15 Jul 2020 16:59:21 +0100 Message-Id: <20200715155921.5543-1-paul@xen.org> X-Mailer: git-send-email 2.17.1 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org, paul@xen.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hi all, Xen 4.14 RC6 is tagged. You can check that out from xen.git: git://xenbits.xen.org/xen.git 4.14.0-rc6 For your convenience there is also a tarball at: https://downloads.xenproject.org/release/xen/4.14.0-rc6/xen-4.14.0-rc6.tar.gz And the signature is at: https://downloads.xenproject.org/release/xen/4.14.0-rc6/xen-4.14.0-rc6.tar.gz.sig This RC is built from the new stable-4.14 branch, with CONFIG_DEBUG=n. Please test as this intended to be the final RC before release. As always, please send bug reports and test reports to xen-devel@lists.xenproject.org. When sending bug reports, please CC relevant maintainers and me (paul@xen.org). Paul Durrant From xen-users-bounces@lists.xenproject.org Thu Jul 16 03:59:16 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 16 Jul 2020 03:59:16 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvv1l-0004tF-Gb; Thu, 16 Jul 2020 03:57:45 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvv1j-0004sj-4M for xen-users@lists.xenproject.org; Thu, 16 Jul 2020 03:57:43 +0000 X-Inumbo-ID: 7f44d054-c718-11ea-bca7-bc764e2007e4 Received: from mail.prgmr.com (unknown [2605:2700:0:5::4713:9506]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 7f44d054-c718-11ea-bca7-bc764e2007e4; Thu, 16 Jul 2020 03:57:42 +0000 (UTC) Received: from [192.168.2.47] (c-174-62-72-237.hsd1.ca.comcast.net [174.62.72.237]) (Authenticated sender: srn) by mail.prgmr.com (Postfix) with ESMTPSA id 02DF7720131; Wed, 15 Jul 2020 23:57:40 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.prgmr.com 02DF7720131 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=prgmr.com; s=default; t=1594871861; bh=Ci03BhGrb5lkD3dAeSsEsAdcT0l21suosKMxM4JncqE=; h=Subject:To:References:From:Date:In-Reply-To:From; b=mTJ6jr39U3NDJszvsVwJmbxEPjuEgs/lxZp85LNe1p/8hyJXJG3gJjsk1+mqOrLg6 3gNITItjgaXQoulbJ32WVOcOxGhVkvA4cDCWLFatjX6U1XrxRRmWNRPzPV4yIFki/T WGa3JYMPGK6AU1/PI6Z4G08UWHg0iE7/NzrJqnnw= Subject: Re: Debian 10, xen 4.11 reliability To: Hans van Kranenburg , Adam Goryachev , xen-users@lists.xenproject.org, Casper References: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> <43b22817-71c6-c2ef-4998-31ebf5d0b863@websitemanagers.com.au> <9d58daf3-133f-2157-ed18-c8ab020f9627@knorrie.org> From: Sarah Newman Message-ID: Date: Wed, 15 Jul 2020 20:57:40 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <9d58daf3-133f-2157-ed18-c8ab020f9627@knorrie.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 7/14/20 2:00 AM, Hans van Kranenburg wrote: > On 7/14/20 1:16 AM, Adam Goryachev wrote: >> >> On 14/7/20 03:02, Hans van Kranenburg wrote: >>> Hi Casper, >>> >>> On 7/9/20 10:45 AM, Casper wrote: >>>> [...] >>>> Or problem with Debian Xen package as it not so popular anymore? >>>> Any suggestion what to test to figure out problem? >> >> BTW, I don't think is a general rule that Debian 10.4 with packages Xen >> 4.11 doesn't work. > > True. It just works (tm), until you have some edge case hardware that > misbehaves, or you run into an edge case bug with a very specific > combination of non-default configuration here and there (or when you try > to use EFI, cough). > > So, to add to the list: > * Run latest BIOS / cpu microcode that is available. > * Other firmware, e.g. for raid controller or whatever? > * Is the box using ECC memory? I mean, even a memory module that flips a > bit now and then can crash a server every few weeks... Run a memtest or > 7zip benchmark or what was the thing that's very good at exposing memory > errors... > > Also, feel free to open a bug report in the Debian bug tracker, we're > willing to help, but expect that you have to do the work to gather all > info. I don't have a similar piece of hardware lying around here... What > distro package maintainers can do is help users to gather enough info to > have a good report that doesn't waste too much time of the upstream > developers. Here is a bug I opened a week ago against Debian Buster: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964494 It looks like only newer versions of the kernel are a problem. We think the trigger is either ext3 or Xen. The problem may not show up for weeks, and we do not know what triggers it. If anyone has more data points to add that would help isolate the issue to one or the other, it would be appreciated. --Sarah From xen-users-bounces@lists.xenproject.org Thu Jul 16 06:34:02 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 16 Jul 2020 06:34:02 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvxRm-00024k-2n; Thu, 16 Jul 2020 06:32:46 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvxRl-00024V-12 for xen-users@lists.xenproject.org; Thu, 16 Jul 2020 06:32:45 +0000 X-Inumbo-ID: 241c4d2c-c72e-11ea-9485-12813bfff9fa Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 241c4d2c-c72e-11ea-9485-12813bfff9fa; Thu, 16 Jul 2020 06:32:38 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id F34B2B029; Thu, 16 Jul 2020 06:32:40 +0000 (UTC) Subject: Re: OpenSUSE and Xen To: peter.jac@protonmail.com, xen-users@lists.xenproject.org, xen-devel References: From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: Date: Thu, 16 Jul 2020 08:32:36 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 15.07.20 19:16, peter.jac@protonmail.com wrote: > > Hello, > I have a question from all Xen Project developers and users. What? Not from me. ;-) > Is OpenSUSE supporting Xen Project? Why do you ask this here, instead of an OpenSUSE list/forum/whatever? > Did anyone install OpenSUSE? I know several people having done so, yes. > Why OpenSUSE not have any option about > installing Xen during installation but have an option about KVM? Ask OpenSUSE community? BTW, I'm able to select "Xen Virtualization Host and Tools" from the "Software" menu when installing openSUSE 15.2. It is even above the "KVM Virtualization Host and Tools" option. > Why Xen package doesn't included? They are. Juergen From xen-users-bounces@lists.xenproject.org Thu Jul 16 08:31:03 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 16 Jul 2020 08:31:03 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvzH5-0003vG-HU; Thu, 16 Jul 2020 08:29:51 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jvzH4-0003vB-Kl for xen-users@lists.xenproject.org; Thu, 16 Jul 2020 08:29:50 +0000 X-Inumbo-ID: 8352a04c-c73e-11ea-948b-12813bfff9fa Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 8352a04c-c73e-11ea-948b-12813bfff9fa; Thu, 16 Jul 2020 08:29:49 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id B0AC6AE25; Thu, 16 Jul 2020 08:29:52 +0000 (UTC) Subject: Re: OpenSUSE and Xen To: peter.jac@protonmail.com, xen-users@lists.xenproject.org References: From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: Date: Thu, 16 Jul 2020 10:29:48 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 16.07.20 10:19, peter.jac@protonmail.com wrote: > Did you use internet during installation? The KVM package is available > on the DVD without the internet connection but Xen... Yes, I've used the network installer. The DVD is limited in space, so there has to be a selection what to put on it. Again: this here is the wrong place to ask why a distribution has chosen to not put some packages on their installation DVD. Ask the distributor, which is the openSUSE community in this case. Juergen > > > Sent from ProtonMail mobile > > > > -------- Original Message -------- > On Jul 16, 2020, 11:02 AM, Jürgen Groß < jgross@suse.com> wrote: > > > On 15.07.20 19:16, peter.jac@protonmail.com wrote: > > > > Hello, > > I have a question from all Xen Project developers and users. > > What? Not from me. ;-) > > > Is OpenSUSE supporting Xen Project? > > Why do you ask this here, instead of an OpenSUSE list/forum/whatever? > > > Did anyone install OpenSUSE? > > I know several people having done so, yes. > > > Why OpenSUSE not have any option about > > installing Xen during installation but have an option about KVM? > > Ask OpenSUSE community? > > BTW, I'm able to select "Xen Virtualization Host and Tools" from the > "Software" menu when installing openSUSE 15.2. It is even above the > "KVM Virtualization Host and Tools" option. > > > Why Xen package doesn't included? > > They are. > > Juergen > From xen-users-bounces@lists.xenproject.org Thu Jul 16 13:20:24 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 16 Jul 2020 13:20:24 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jw3nA-0004sW-9A; Thu, 16 Jul 2020 13:19:16 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jw3n8-0004rq-S5 for xen-users@lists.xen.org; Thu, 16 Jul 2020 13:19:14 +0000 X-Inumbo-ID: eb9fc9f4-c766-11ea-b7bb-bc764e2007e4 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id eb9fc9f4-c766-11ea-b7bb-bc764e2007e4; Thu, 16 Jul 2020 13:19:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Date:Message-Id:Subject:CC:From:To:MIME-Version: Content-Transfer-Encoding:Content-Type:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=3VGZzYg6mn62RtPmWMdMHRbsHJM8t32N5zUX+qK4CUw=; b=G7u8LMu9ALbkKy8HZA3VKFPwtJ ExmVOFeRW3Hkjfbt1HVZrvl2CAeZsfBaiq++awmQq1YLnmRYVn9YPIXoEm46dg9pJ6Ps4DPkdYzwd pHGAM9/5cy/0G36Iv8l0Y5VmPyGTJIxMP3KLqKuPyYsnAunp95ZFEt46TTSt9M8iRZIY=; Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jw3ms-0006Kq-VB; Thu, 16 Jul 2020 13:18:58 +0000 Received: from iwj by xenbits.xenproject.org with local (Exim 4.92) (envelope-from ) id 1jw3ms-0006i6-Se; Thu, 16 Jul 2020 13:18:58 +0000 Content-Type: multipart/mixed; boundary="=separator"; charset="utf-8" Content-Transfer-Encoding: binary MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) To: xen-announce@lists.xen.org, xen-devel@lists.xen.org, xen-users@lists.xen.org, oss-security@lists.openwall.com From: Xen.org security team Subject: Xen Security Advisory 329 v2 - Linux ioperm bitmap context switching issues Message-Id: Date: Thu, 16 Jul 2020 13:18:58 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "Xen.org security team" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --=separator Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Xen Security Advisory XSA-329 version 2 Linux ioperm bitmap context switching issues UPDATES IN VERSION 2 ==================== Public release. ISSUE DESCRIPTION ================= Linux 5.5 overhauled the internal state handling for the iopl() and ioperm() system calls. Unfortunately, one aspect on context switch wasn't wired up correctly for the Xen PVOps case. IMPACT ====== IO port permissions don't get rescinded when context switching to an unprivileged task. Therefore, all userspace can use the IO ports granted to the most recently scheduled task with IO port permissions. VULNERABLE SYSTEMS ================== Only x86 guests are vulnerable. All versions of Linux from 5.5 are potentially vulnerable. Linux is only vulnerable when running as x86 PV guest. Linux is not vulnerable when running as an x86 HVM/PVH guests. The vulnerability can only be exploited in domains which have been granted access to IO ports by Xen. This is typically only the hardware domain, and guests configured with PCI Passthrough. MITIGATION ========== Running only HVM/PVH guests avoids the vulnerability. CREDITS ======= This issue was discovered by Andy Lutomirski. RESOLUTION ========== Applying the appropriate attached patch resolves this issue. xsa329.patch Linux 5.5 and later $ sha256sum xsa329* cdb5ac9bfd21192b5965e8ec0a1c4fcf12d0a94a962a8158cd27810e6aa362f0 xsa329.patch $ DEPLOYMENT DURING EMBARGO ========================= Deployment of the patches and/or mitigations described above (or others which are substantially similar) is permitted during the embargo, even on public-facing systems with untrusted guest users and administrators. But: Distribution of updated software is prohibited (except to other members of the predisclosure list). Predisclosure list members who wish to deploy significantly different patches and/or mitigations, please contact the Xen Project Security Team. (Note: this during-embargo deployment notice is retained in post-embargo publicly released Xen Project advisories, even though it is then no longer applicable. This is to enable the community to have oversight of the Xen Project Security Team's decisionmaking.) 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RVJNCisJLmludmFsaWRhdGVfaW9fYml0bWFwID0geGVuX2ludmFsaWRhdGVf aW9fYml0bWFwLAogCS51cGRhdGVfaW9fYml0bWFwID0geGVuX3VwZGF0ZV9p b19iaXRtYXAsCiAjZW5kaWYKIAkuaW9fZGVsYXkgPSB4ZW5faW9fZGVsYXks Cg== --=separator-- From xen-users-bounces@lists.xenproject.org Thu Jul 16 13:36:03 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 16 Jul 2020 13:36:03 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jw41k-0006x5-58; Thu, 16 Jul 2020 13:34:20 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jw41i-0006x0-LD for xen-users@lists.xenproject.org; Thu, 16 Jul 2020 13:34:18 +0000 X-Inumbo-ID: 0a071008-c769-11ea-94b9-12813bfff9fa Received: from Shared9.abilixsoft.eu (unknown [185.246.168.6]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 0a071008-c769-11ea-94b9-12813bfff9fa; Thu, 16 Jul 2020 13:34:15 +0000 (UTC) Received: from [10.255.31.254] (unknown [213.91.182.188]) by Shared9.abilixsoft.eu (Postfix) with ESMTPSA id D5A7341AC7 for ; Thu, 16 Jul 2020 16:34:13 +0300 (EEST) To: xen-users@lists.xenproject.org From: Stanislav Subject: System hangs when NVMe is under load Message-ID: <3448136c-bc11-dc30-7c57-853b51429cb1@abilixsoft.eu> Date: Thu, 16 Jul 2020 16:34:13 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="------------88BCB1F642124A46412AB5FD" Content-Language: en-US X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" This is a multi-part message in MIME format. --------------88BCB1F642124A46412AB5FD Content-Type: multipart/alternative; boundary="------------FD6BC5F3ED56879280BBE34A" --------------FD6BC5F3ED56879280BBE34A Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Hello, I would like to be excused beforehand if i am sending something the the wrong folks. We have a strange situation going on here with a couple of our servers. We've been experiencing issues with the combination of Debian+XEN+Samsung NVMe. Problem: It all began with https://serverfault.com/questions/1006366/samsung-nvme-disappears-when-server-on-average-to-high-load The situation is close to the one described above with some differences. *Now It can be reproduced.* * OS: 4.19.0-9-amd64 #1 SMP Debian 4.19.118-2+deb10u1 * CPUS: Intel(R) Xeon(R) CPU E5-1650 v4 * NVMe: Samsung MZ1LB1T9HALS-00007 * xen_version            : 4.11.4-pre * Server: Supermicro Super Server/X10SRW-F, BIOS 3.2 We've gathered some more information - It happens only when XEN is loaded. The command that breaks everything is the following and it breaks it fast. In the following situation it just needs approx 20 secs to hang the whole system. I am attaching the Call trace which occurs during the hang up. date; echo; fio --filename=/dev/nvme0n1 --direct=1 --rw=randread --bs=4k --ioengine=libaio --iodepth=256 --runtime=345600 --numjobs=10 --time_based --group_reporting --name=iops-test-job --readonly --output=fio_log.randread4k.log; date I have currently ran the test on one of the nodes where I have booted /without /xen. Have in mind that all servers are provisioned with Ansible and are the same. What is tried so far: Setting kernel option nvme_core.default_ps_max_latency_us to 5500/200 as read https://wiki.archlinux.org/index.php/Solid_state_drive/NVMe#Samsung_drive_errors_on_Linux_4.10 and https://askubuntu.com/questions/905710/ext4-fs-error-after-ubuntu-17-04-upgrade Setting kernel option nvme_core.force_apst=1 thus trying to force APST since (nvme id-ctrl /dev/nvme0n1  | grep apst apsta     : 0 ) * First try - no success. * Forcing APST to Y - no success. I have kind of "overheated" on the subject right now and could be possibly missing something important out. Let me know if you need any more information. NB: We began testing this cluster because it was showing really slow disk related operations (on the nvme). For comparison - the other cluster (mentioned in serverfault), never showed any performance issues. Best Regards, -- Stanislav Ivanov System Administrator ––––––––––––––––––––––––– Abilix Soft LTD. Варна, ул."Студентска" №1А, Офис 24Б Support: +359 700 911 44 https://abscloud.eu --------------FD6BC5F3ED56879280BBE34A Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

Hello,

I would like to be excused beforehand if i am sending something the the wrong folks.

We have a strange situation going on here with a couple of our servers. We've been experiencing issues with the combination of Debian+XEN+Samsung NVMe.

Problem:

It all began with https://serverfault.com/questions/1006366/samsung-nvme-disappears-when-server-on-average-to-high-load

The situation is close to the one described above with some differences. Now It can be reproduced.

  • OS: 4.19.0-9-amd64 #1 SMP Debian 4.19.118-2+deb10u1
  • CPUS: Intel(R) Xeon(R) CPU E5-1650 v4
  • NVMe: Samsung MZ1LB1T9HALS-00007
  • xen_version            : 4.11.4-pre
  • Server: Supermicro Super Server/X10SRW-F, BIOS 3.2

We've gathered some more information - It happens only when XEN is loaded.

The command that breaks everything is the following and it breaks it fast. In the following situation it just needs approx 20 secs to hang the whole system. I am attaching the Call trace which occurs during the hang up.

date; echo; fio --filename=/dev/nvme0n1 --direct=1 --rw=randread --bs=4k --ioengine=libaio --iodepth=256 --runtime=345600 --numjobs=10 --time_based --group_reporting --name=iops-test-job --readonly --output=fio_log.randread4k.log; date

I have currently ran the test on one of the nodes where I have booted without xen. Have in mind that all servers are provisioned with Ansible and are the same.

What is tried so far:

Setting kernel option nvme_core.default_ps_max_latency_us to 5500/200 as read https://wiki.archlinux.org/index.php/Solid_state_drive/NVMe#Samsung_drive_errors_on_Linux_4.10 and https://askubuntu.com/questions/905710/ext4-fs-error-after-ubuntu-17-04-upgrade

Setting kernel option nvme_core.force_apst=1 thus trying to force APST since (nvme id-ctrl /dev/nvme0n1  | grep apst
apsta     : 0 )

  • First try - no success.
  • Forcing APST to Y - no success.

I have kind of "overheated" on the subject right now and could be possibly missing something important out. Let me know if you need any more information.

NB: We began testing this cluster because it was showing really slow disk related operations (on the nvme). For comparison - the other cluster (mentioned in serverfault), never showed any performance issues.

Best Regards,

-- 
Stanislav Ivanov
System Administrator
–––––––––––––––––––––––––
Abilix Soft LTD.
Варна, ул."Студентска" №1А, Офис 24Б
Support: +359 700 911 44
https://abscloud.eu
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Thu, 16 Jul 2020 15:00:07 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jw5Mj-00074N-8e for xen-users@lists.xenproject.org; Thu, 16 Jul 2020 15:00:05 +0000 X-Inumbo-ID: 07ee3cc2-c775-11ea-bb8b-bc764e2007e4 Received: from mail-vk1-xa35.google.com (unknown [2607:f8b0:4864:20::a35]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 07ee3cc2-c775-11ea-bb8b-bc764e2007e4; Thu, 16 Jul 2020 15:00:04 +0000 (UTC) Received: by mail-vk1-xa35.google.com with SMTP id t187so1375811vke.5 for ; Thu, 16 Jul 2020 08:00:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=qPtWiqmfmJJFvtUtxD5M6Ttn1JrJuN+DC7E47ZRbCfQ=; b=iNu2cFJVc1cbMtLkEWIrSFrtPP3fJmQ1MQrQTCDb8JOCqKbJEsvS2RE4N9+6pyVAfk m/QX3eNX+mljz2J+kXpdC8hVFhrZpBKehtDYEv435NoZVXOvKDd59jaY+/HkpRBe2I6T XEwefcc+0OPj74RZzPpdgHKRU0okwZzSFsfbvo8/kYhN9tlCS2EM9kj4nFJW6i3XKDhj BSLcOupDRvD8NC7Jm9VJbnOdvTzpDxXF4QS3eiA31qoB/CDJ+Dy+qG66m2AwQM7PDAqy I2GbgquDgqdCCKLaMTi9H1JeMpvr1ypBMnQkjJbuwXOpzb1MTRm++rp5J+5myuE7W5Xf 9qMw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=qPtWiqmfmJJFvtUtxD5M6Ttn1JrJuN+DC7E47ZRbCfQ=; b=AXMmJEHDOAhyKM3D+wX9GUynV0YyMQr5zSoYf1oqJQToM3Ru1SfrzYN8jMOBYOlnzZ tjStc2y4OVCtWpUFe5bJ/AZDpL98xjKN1O1pzJVn1kTi7icAbgjpcB1qkkHFJygoWMWE L0H1laPmozcM8gm5OaLN3GAVdVNKEAb7cVz05/GxBLeBPhjCnyn3IXSvinkyZ8VN1bkr L65Vb3oaCcNhzZthoEVhwsn3R743ct1WaXPLNg862vREVDVw1EoPJhAP7jRbv5Es5PYR MYdFdrP2vp+XKPKK2M8yn6InBmfO0bkYJZx2DFfyA9TGWk8oKAuVtKKP8tsh00dXlfJo x4hg== X-Gm-Message-State: AOAM53135/eqIqp46vqd3CawyefzWIBltVu2KMu2f1mW5ZoOVT/ff1DB YKZbr1WtgYBirJkRNvLU06w8WyJ24bS1/Jh+YxY= X-Google-Smtp-Source: ABdhPJyu82wspFFTGYKZu31zVI0/VnbOeX+ZuTR8aa82FxH+SSnnHkHTx/bJobIv7fx6UXxESE367hHWF/vCESa8KTc= X-Received: by 2002:a05:6122:78d:: with SMTP id k13mr4001376vkr.28.1594911604342; Thu, 16 Jul 2020 08:00:04 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Biff Eros Date: Thu, 16 Jul 2020 15:24:42 +0000 Message-ID: Subject: Re: OpenSUSE and Xen To: peter.jac@protonmail.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xenproject.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" I don't know if it helps, but I had to install yast2-vm package before any Xen options came up. This must have been a recent change because I saw guides that made no mention of it. On Thu, Jul 16, 2020 at 2:30 PM wrote: > > Why the DVD doesn't have free space for Xen but have for KVM? > OK, if it is because of DVD space then why not remove KVM and add Xen ins= tead of it? > I asked "https://forums.opensuse.org/showthread.php/541471-How-to-install= -Xen-during-installation" . > > > > Sent from ProtonMail mobile > > > > -------- Original Message -------- > On Jul 16, 2020, 12:59 PM, J=C3=BCrgen Gro=C3=9F < jgross@suse.com> wrote= : > > > On 16.07.20 10:19, peter.jac@protonmail.com wrote: > > Did you use internet during installation? The KVM package is available > > on the DVD without the internet connection but Xen... > > Yes, I've used the network installer. > > The DVD is limited in space, so there has to be a selection what to put > on it. > > Again: this here is the wrong place to ask why a distribution has chosen > to not put some packages on their installation DVD. Ask the distributor, > which is the openSUSE community in this case. > > Juergen > > > > > > > Sent from ProtonMail mobile > > > > > > > > -------- Original Message -------- > > On Jul 16, 2020, 11:02 AM, J=C3=BCrgen Gro=C3=9F < jgross@suse.com> wro= te: > > > > > > On 15.07.20 19:16, peter.jac@protonmail.com wrote: > > > > > > Hello, > > > I have a question from all Xen Project developers and users. > > > > What? Not from me. ;-) > > > > > Is OpenSUSE supporting Xen Project? > > > > Why do you ask this here, instead of an OpenSUSE list/forum/whatever? > > > > > Did anyone install OpenSUSE? > > > > I know several people having done so, yes. > > > > > Why OpenSUSE not have any option about > > > installing Xen during installation but have an option about KVM? > > > > Ask OpenSUSE community? > > > > BTW, I'm able to select "Xen Virtualization Host and Tools" from the > > "Software" menu when installing openSUSE 15.2. It is even above the > > "KVM Virtualization Host and Tools" option. > > > > > Why Xen package doesn't included? > > > > They are. > > > > Juergen > > From xen-users-bounces@lists.xenproject.org Thu Jul 16 21:36:11 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 16 Jul 2020 21:36:11 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jwBWg-0007D2-Lu; Thu, 16 Jul 2020 21:34:46 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jwBWf-0007Cx-Bd for xen-users@lists.xenproject.org; Thu, 16 Jul 2020 21:34:45 +0000 X-Inumbo-ID: 29466a84-c7ac-11ea-9540-12813bfff9fa Received: from syrinx.knorrie.org (unknown [82.94.188.77]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 29466a84-c7ac-11ea-9540-12813bfff9fa; Thu, 16 Jul 2020 21:34:43 +0000 (UTC) Received: from [IPv6:2a02:a213:2b80:f000::12] (unknown [IPv6:2a02:a213:2b80:f000::12]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by syrinx.knorrie.org (Postfix) with ESMTPSA id 64B27609A29D3; Thu, 16 Jul 2020 23:34:42 +0200 (CEST) Subject: Re: Debian 10, xen 4.11 reliability To: xen-users@lists.xenproject.org, Sarah Newman References: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> <43b22817-71c6-c2ef-4998-31ebf5d0b863@websitemanagers.com.au> <9d58daf3-133f-2157-ed18-c8ab020f9627@knorrie.org> From: Hans van Kranenburg Autocrypt: addr=hans@knorrie.org; keydata= mQINBFo2pooBEADwTBe/lrCa78zuhVkmpvuN+pXPWHkYs0LuAgJrOsOKhxLkYXn6Pn7e3xm+ ySfxwtFmqLUMPWujQYF0r5C6DteypL7XvkPP+FPVlQnDIifyEoKq8JZRPsAFt1S87QThYPC3 mjfluLUKVBP21H3ZFUGjcf+hnJSN9d9MuSQmAvtJiLbRTo5DTZZvO/SuQlmafaEQteaOswme DKRcIYj7+FokaW9n90P8agvPZJn50MCKy1D2QZwvw0g2ZMR8yUdtsX6fHTe7Ym+tHIYM3Tsg 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ngzsm553yqEjLTuWOjzdHLpE4lzD416ExCoZy7RLEHNhM1YQSI2RNs8umlDfZM9Lek1+1kgB vT3RH0/CpPJgveWV5xDOKuhD8j5l7FME+t2RWP+gyLid6dE0C7J03ir90PlTEkMEHEzyJMPt OhO05Phy+d51WPTo1VSKxhL4bsWddHLfQoXW8RQ388Q69JG4m+JhNH/XvWe3aQFpYP+GZuzO hkMez0lHCaVOOLBSKHkAHh9i0/pH+/3hfEa4NsoHCpyy Message-ID: <006d011b-a440-29c6-b9fb-5bd121d55839@knorrie.org> Date: Thu, 16 Jul 2020 23:34:41 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Adam Goryachev , Casper Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 7/16/20 5:57 AM, Sarah Newman wrote: > On 7/14/20 2:00 AM, Hans van Kranenburg wrote: >> On 7/14/20 1:16 AM, Adam Goryachev wrote: >>> >>> On 14/7/20 03:02, Hans van Kranenburg wrote: >>>> Hi Casper, >>>> >>>> On 7/9/20 10:45 AM, Casper wrote: >>>>> [...] >>>>> Or problem with Debian Xen package as it not so popular anymore? >>>>> Any suggestion what to test to figure out problem? >>> >>> BTW, I don't think is a general rule that Debian 10.4 with packages Xen >>> 4.11 doesn't work. >> >> True. It just works (tm), until you have some edge case hardware that >> misbehaves, or you run into an edge case bug with a very specific >> combination of non-default configuration here and there (or when you try >> to use EFI, cough). >> >> So, to add to the list: >> * Run latest BIOS / cpu microcode that is available. >> * Other firmware, e.g. for raid controller or whatever? >> * Is the box using ECC memory? I mean, even a memory module that flips a >> bit now and then can crash a server every few weeks... Run a memtest or >> 7zip benchmark or what was the thing that's very good at exposing memory >> errors... >> >> Also, feel free to open a bug report in the Debian bug tracker, we're >> willing to help, but expect that you have to do the work to gather all >> info. I don't have a similar piece of hardware lying around here... What >> distro package maintainers can do is help users to gather enough info to >> have a good report that doesn't waste too much time of the upstream >> developers. > > Here is a bug I opened a week ago against Debian Buster: > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964494 > > It looks like only newer versions of the kernel are a problem. We think the trigger is either ext3 or Xen. > > The problem may not show up for weeks, and we do not know what triggers it. > > If anyone has more data points to add that would help isolate the issue to one or the other, it would be appreciated. You're not running Debian Xen packages apparently, so I can't say much about that part. Except that for the Debian stuff, we only use the upstream stable-X.Y branches and never apply security patches from XSAs ourselves manually. There are just too many ways in which shooting into feet can be done. The upstream staging-X.Y branch is tested before the commits get pushed into stable-X.Y. Debian security updates are done with that, and the other bug fixes and dependent commits in the stable branch just also go in at the same time. Doing this means that we make our users run something that the upstream developers will not disapprove of, whenever we need to ask them to help with something. (Yes, for the careful reader, that actually means that the current 4.11.4+24-gddaaccbbab-1~deb10u1 in buster-security is 100% the same as is if it would be in buster-backports). But, is that Linux 4.9 in the dom0? Begin by eliminating that. Our milage may vary, but at work, we skipped from Jessie to Buster (well, actually to our own strech-backports) because I really could not get anything working with Linux 4.9 as dom0 kernel after the whole Spectre/Meltdown stuff unfolded. We never got to the bottom of it, due to a big lack of time and kernel debugging knowledge/experience, but what I have seen is random Oopses, disk corruption and other things. Are you using live migration? So, why not get those dom0s to latest Xen 4.11 packages from Debian and Linux 4.19? It's flying here, with several clusters of dozens of servers and a few dozen TiB of mems, running thousands of domUs, without any problem. I agree with Ben that using ext3 nowadays should be discouraged because of the amount of usage and testing decreasing. But, I might have the luxury of working with a setup where we manage all of it and have customers look at some GUI and have no idea about the actual underlying systems. Having customers run anything they want is a different slice of bread... Anyway, the above is just some thinking out loud. I know that it's very difficult to debug these kinds of things, because you need more failures happening to be able to correlate, and a reliable reproduction scenario would be the ultimate thing as a start to figure out what's actually going wrong, but these are really difficult time consuming tasks. Have fun, Hans From xen-users-bounces@lists.xenproject.org Thu Jul 16 22:00:20 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 16 Jul 2020 22:00:20 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jwBu3-0000n2-10; Thu, 16 Jul 2020 21:58:55 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jwBu1-0000mx-Gj for xen-users@lists.xenproject.org; Thu, 16 Jul 2020 21:58:53 +0000 X-Inumbo-ID: 88dd33b2-c7af-11ea-8496-bc764e2007e4 Received: from mail.prgmr.com (unknown [2605:2700:0:5::4713:9506]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 88dd33b2-c7af-11ea-8496-bc764e2007e4; Thu, 16 Jul 2020 21:58:52 +0000 (UTC) Received: from [192.168.2.47] (c-174-62-72-237.hsd1.ca.comcast.net [174.62.72.237]) (Authenticated sender: srn) by mail.prgmr.com (Postfix) with ESMTPSA id 39E6072009F; Thu, 16 Jul 2020 17:58:51 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.prgmr.com 39E6072009F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=prgmr.com; s=default; t=1594936731; bh=/TfOCPGkpwu3ul9iln0tD5KKa03R8SKWu8Wtssc0W6Y=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=HexX0JwKoDF8iEMAiFZP67iZe6McKAAcmqtggc/6cHt0Em2chJa+ESlibz8sO5qLK LBgBZbtUtzm71EFNJ/m8Qh7TsfkAZVGKAcbNSvlMU+iCuN5t+aPp4ZEK49MimPkCHe 6JlvRtvzhIQG7aVddvmaU49V+ytxa1+qOd+Fk1bE= Subject: Re: Debian 10, xen 4.11 reliability To: Hans van Kranenburg , xen-users@lists.xenproject.org References: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> <43b22817-71c6-c2ef-4998-31ebf5d0b863@websitemanagers.com.au> <9d58daf3-133f-2157-ed18-c8ab020f9627@knorrie.org> <006d011b-a440-29c6-b9fb-5bd121d55839@knorrie.org> From: Sarah Newman Message-ID: <03a68524-060a-c468-638c-ddf022fc94be@prgmr.com> Date: Thu, 16 Jul 2020 14:58:50 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <006d011b-a440-29c6-b9fb-5bd121d55839@knorrie.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Adam Goryachev , Casper Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 7/16/20 2:34 PM, Hans van Kranenburg wrote: > You're not running Debian Xen packages apparently, so I can't say much > about that part. > But, is that Linux 4.9 in the dom0? Begin by eliminating that. We've been running Linux 4.9 for a long time, though we plan to upgrade soon. The timing does not correlate, and far less than one percent of our users are having issues. > Our > milage may vary, but at work, we skipped from Jessie to Buster (well, > actually to our own strech-backports) because I really could not get > anything working with Linux 4.9 as dom0 kernel after the whole > Spectre/Meltdown stuff unfolded. We never got to the bottom of it, due > to a big lack of time and kernel debugging knowledge/experience, but > what I have seen is random Oopses, disk corruption and other things. There were panics in the dom0 which I traced to a network driver, and I fixed it. This is the first time we've had complaints of file system corruption. > Are you using live migration? Not so recently that it would have affected the two systems with problems. > > So, why not get those dom0s to latest Xen 4.11 packages from Debian and > Linux 4.19? It's flying here, with several clusters of dozens of servers > and a few dozen TiB of mems, running thousands of domUs, without any > problem. Are your dom0's running the latest kernel version? Are they running ext3? What uptime have they had? What about the domU's? > > I agree with Ben that using ext3 nowadays should be discouraged because > of the amount of usage and testing decreasing. Yes. I think Debian and Ubuntu are the only distributions where we might have users who are using an old file system with a new kernel, which is why I'm focused on ext3. But I can't say for certain. > But, I might have the luxury of working with a setup where we manage all > of it and have customers look at some GUI and have no idea about the > actual underlying systems. Having customers run anything they want is a > different slice of bread... It very much is. > > Anyway, the above is just some thinking out loud. I know that it's very > difficult to debug these kinds of things, because you need more failures > happening to be able to correlate, and a reliable reproduction scenario > would be the ultimate thing as a start to figure out what's actually > going wrong, but these are really difficult time consuming tasks. We're trying. Thanks, Sarah From xen-users-bounces@lists.xenproject.org Thu Jul 16 22:09:03 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 16 Jul 2020 22:09:03 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jwC3V-0001st-Jp; Thu, 16 Jul 2020 22:08:41 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jwC3T-0001si-Ud for xen-users@lists.xenproject.org; Thu, 16 Jul 2020 22:08:40 +0000 X-Inumbo-ID: e6d26770-c7b0-11ea-8496-bc764e2007e4 Received: from mail.prgmr.com (unknown [2605:2700:0:5::4713:9506]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id e6d26770-c7b0-11ea-8496-bc764e2007e4; Thu, 16 Jul 2020 22:08:39 +0000 (UTC) Received: from [192.168.2.47] (c-174-62-72-237.hsd1.ca.comcast.net [174.62.72.237]) (Authenticated sender: srn) by mail.prgmr.com (Postfix) with ESMTPSA id 4D4A972009F; Thu, 16 Jul 2020 18:08:38 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.prgmr.com 4D4A972009F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=prgmr.com; s=default; t=1594937318; bh=J8vifsiqRFYkRtKqiqw5+jrsnwiq5EIqsvw/hqDgpO0=; h=From:Subject:To:References:Date:In-Reply-To:From; b=K3gvvTcO4v5dXuFrgwg5mJsuPVNMPpH7oIDYlxmtNrbf7vj+g6/xtEfTj85NzuUUR tblHo0utFglA2j5TW/FcvnijdIFtqLJchv2OrLnz319b3O6AJt/dZ4JVoIDjpUIZC+ PvnHlTsbGV0GOB9tgw32nLPI1DThu239//rxat54= From: Sarah Newman Subject: Re: System hangs when NVMe is under load To: Stanislav , xen-users@lists.xenproject.org References: <3448136c-bc11-dc30-7c57-853b51429cb1@abilixsoft.eu> Message-ID: Date: Thu, 16 Jul 2020 15:08:37 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <3448136c-bc11-dc30-7c57-853b51429cb1@abilixsoft.eu> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 7/16/20 6:34 AM, Stanislav wrote: > Hello, > > I would like to be excused beforehand if i am sending something the the wrong folks. > > We have a strange situation going on here with a couple of our servers. We've been experiencing issues with the combination of Debian+XEN+Samsung NVMe. > > Problem: > > It all began with https://serverfault.com/questions/1006366/samsung-nvme-disappears-when-server-on-average-to-high-load > > The situation is close to the one described above with some differences. *Now It can be reproduced.* > >  * OS: 4.19.0-9-amd64 #1 SMP Debian 4.19.118-2+deb10u1 >  * CPUS: Intel(R) Xeon(R) CPU E5-1650 v4 >  * NVMe: Samsung MZ1LB1T9HALS-00007 >  * xen_version            : 4.11.4-pre >  * Server: Supermicro Super Server/X10SRW-F, BIOS 3.2 > > We've gathered some more information - It happens only when XEN is loaded. > > The command that breaks everything is the following and it breaks it fast. In the following situation it just needs approx 20 secs to hang the whole > system. I am attaching the Call trace which occurs during the hang up. Does the system still respond to sysrq https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html ? The dom0 is a PV system so you'll need to use ctrl-o to send a break if you're on the serial console. You could try to use that to dump a backtrace for all the CPUs. You can also try sending a command to xen. Xen has a debug handler, which unfortunately I can't find good documentation for (this seems like something really basic missing, oops.) In any case, if you use 'ctrl-a' three times on your console that should switch between Xen and the dom0. From there 'h' shows the commands. I do not have useful advice on what to collect there. You may also be interesting in trying a debug kernel build. We did one already for Debian for other reasons so we may be able to help you with that. --Sarah From xen-users-bounces@lists.xenproject.org Fri Jul 17 07:50:32 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 17 Jul 2020 07:50:32 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jwL7b-00036U-9p; Fri, 17 Jul 2020 07:49:31 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jwL7Z-00036O-7v for xen-users@lists.xenproject.org; Fri, 17 Jul 2020 07:49:29 +0000 X-Inumbo-ID: 096da186-c802-11ea-9597-12813bfff9fa Received: from mail-40141.protonmail.ch (unknown [185.70.40.141]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 096da186-c802-11ea-9597-12813bfff9fa; Fri, 17 Jul 2020 07:49:26 +0000 (UTC) Date: Fri, 17 Jul 2020 07:49:23 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail; t=1594972165; bh=WaqXEQ3EXd8wNgNditYlezxxk36qikH8nMNZrAHcaRI=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References:From; b=oShMxnP48Q0s8oolLXv5IToeO555GTwaiE7xCSBz5GrOMu283SP2tHkIcp46CCFsk Jp+zJY5FbvTkOa3j1+QQfbycC+zUeL2UHfZzA8tRQJo43BVidzcx7hsW2dqFuWjnEc HypCkt3h5Pp74JBHEAZyvRTn9xqzqNE4fitT76tY= To: bifferos@gmail.com From: peter.jac@protonmail.com Subject: Re: OpenSUSE and Xen Message-ID: In-Reply-To: References: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="b1_sJ4KY5AAyZu7XnAGLmSPuG1HaNJ87UnG2NM8NDS1s" X-Spam-Status: No, score=-1.2 required=7.0 tests=ALL_TRUSTED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,HTML_MESSAGE shortcircuit=no autolearn=disabled version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on mail.protonmail.ch X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: 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(Exim 4.92) (envelope-from ) id 1jwZLH-0002vW-Bf for xen-users@lists.xenproject.org; Fri, 17 Jul 2020 23:00:35 +0000 X-Inumbo-ID: 5156cb42-c881-11ea-bca7-bc764e2007e4 Received: from syrinx.knorrie.org (unknown [2001:888:2177::4d]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 5156cb42-c881-11ea-bca7-bc764e2007e4; Fri, 17 Jul 2020 23:00:33 +0000 (UTC) Received: from [IPv6:2a02:a213:2b80:f000::12] (unknown [IPv6:2a02:a213:2b80:f000::12]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by syrinx.knorrie.org (Postfix) with ESMTPSA id 4B2CE609A645B; Sat, 18 Jul 2020 01:00:32 +0200 (CEST) Subject: Re: Debian 10, xen 4.11 reliability To: Sarah Newman , xen-users@lists.xenproject.org References: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> <43b22817-71c6-c2ef-4998-31ebf5d0b863@websitemanagers.com.au> <9d58daf3-133f-2157-ed18-c8ab020f9627@knorrie.org> <006d011b-a440-29c6-b9fb-5bd121d55839@knorrie.org> <03a68524-060a-c468-638c-ddf022fc94be@prgmr.com> From: Hans van Kranenburg Autocrypt: addr=hans@knorrie.org; keydata= mQINBFo2pooBEADwTBe/lrCa78zuhVkmpvuN+pXPWHkYs0LuAgJrOsOKhxLkYXn6Pn7e3xm+ ySfxwtFmqLUMPWujQYF0r5C6DteypL7XvkPP+FPVlQnDIifyEoKq8JZRPsAFt1S87QThYPC3 mjfluLUKVBP21H3ZFUGjcf+hnJSN9d9MuSQmAvtJiLbRTo5DTZZvO/SuQlmafaEQteaOswme DKRcIYj7+FokaW9n90P8agvPZJn50MCKy1D2QZwvw0g2ZMR8yUdtsX6fHTe7Ym+tHIYM3Tsg 2KKgt17NTxIqyttcAIaVRs4+dnQ23J98iFmVHyT+X2Jou+KpHuULES8562QltmkchA7YxZpT mLMZ6TPit+sIocvxFE5dGiT1FMpjM5mOVCNOP+KOup/N7jobCG15haKWtu9k0kPz+trT3NOn gZXecYzBmasSJro60O4bwBayG9ILHNn+v/ZLg/jv33X2MV7oYXf+ustwjXnYUqVmjZkdI/pt 30lcNUxCANvTF861OgvZUR4WoMNK4krXtodBoEImjmT385LATGFt9HnXd1rQ4QzqyMPBk84j roX5NpOzNZrNJiUxj+aUQZcINtbpmvskGpJX0RsfhOh2fxfQ39ZP/0a2C59gBQuVCH6C5qsY rc1qTIpGdPYT+J1S2rY88AvPpr2JHZbiVqeB3jIlwVSmkYeB/QARAQABtCZIYW5zIHZhbiBL cmFuZW5idXJnIDxoYW5zQGtub3JyaWUub3JnPokCTgQTAQoAOBYhBOJv1o/B6NS2GUVGTueB 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Adam Goryachev , Casper Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hi, On 7/16/20 11:58 PM, Sarah Newman wrote: > On 7/16/20 2:34 PM, Hans van Kranenburg wrote: > >> You're not running Debian Xen packages apparently, so I can't say much >> about that part. > >> But, is that Linux 4.9 in the dom0? Begin by eliminating that. > > We've been running Linux 4.9 for a long time, though we plan to upgrade soon. > > The timing does not correlate, and far less than one percent of our users are having issues. > >> Our >> milage may vary, but at work, we skipped from Jessie to Buster (well, >> actually to our own strech-backports) because I really could not get >> anything working with Linux 4.9 as dom0 kernel after the whole >> Spectre/Meltdown stuff unfolded. We never got to the bottom of it, due >> to a big lack of time and kernel debugging knowledge/experience, but >> what I have seen is random Oopses, disk corruption and other things. > > There were panics in the dom0 which I traced to a network driver, and I fixed it. Oh, wonderful, thanks! :) > This is the first time we've had complaints of file system corruption. > >> Are you using live migration? > > Not so recently that it would have affected the two systems with problems. > >> >> So, why not get those dom0s to latest Xen 4.11 packages from Debian and >> Linux 4.19? It's flying here, with several clusters of dozens of servers >> and a few dozen TiB of mems, running thousands of domUs, without any >> problem. > > Are your dom0's running the latest kernel version? Are they running ext3? What uptime have they had? There's certainly 4.19.118-2 based dom0 kernels in the mix, yes. Dom0 filesystem is ext4. > What about the domU's? Some quite heavily used domUs on these servers. And filesystems are either ext4 or btrfs. So, no ext3 anywhere, at all. >> I agree with Ben that using ext3 nowadays should be discouraged because >> of the amount of usage and testing decreasing. > > Yes. I think Debian and Ubuntu are the only distributions where we might have users who are using an old file system with a new kernel, which is why > I'm focused on ext3. But I can't say for certain. Interesting. I have no great ideas or anything right now, sorry. I can of course grab a test domU here and create an ext3 fs on an extra block device, make it do something and then see what happens after some time... >> But, I might have the luxury of working with a setup where we manage all >> of it and have customers look at some GUI and have no idea about the >> actual underlying systems. Having customers run anything they want is a >> different slice of bread... > > It very much is. > >> >> Anyway, the above is just some thinking out loud. I know that it's very >> difficult to debug these kinds of things, because you need more failures >> happening to be able to correlate, and a reliable reproduction scenario >> would be the ultimate thing as a start to figure out what's actually >> going wrong, but these are really difficult time consuming tasks. > > We're trying. Good luck Hans From xen-users-bounces@lists.xenproject.org Sun Jul 19 17:25:51 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 19 Jul 2020 17:25:51 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxD2n-0004TM-Ui; Sun, 19 Jul 2020 17:24:09 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jwLCa-0003zl-B8 for xen-users@lists.xen.org; Fri, 17 Jul 2020 07:54:40 +0000 X-Inumbo-ID: c3b66ae6-c802-11ea-9597-12813bfff9fa Received: from us-smtp-delivery-1.mimecast.com (unknown [205.139.110.120]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id c3b66ae6-c802-11ea-9597-12813bfff9fa; Fri, 17 Jul 2020 07:54:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1594972478; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=mCVsudiUaJnZfsa/Js80mZXCIgbfZRyKNbODyzDeHsc=; b=dAUFeKc9WEopminlxhiMZnx628fNyHqAHXh0KAGvvWflKX3c+iRnUA81nwZlSvVfSR9KCJ vZ95an70CvF2N3pinXbG/SahuY0Mo1N63JwWmhDOFe+IaNeBtA3SlRAbVioADFq3OLyJOV U1n+SHq4ppuR7hSWMYEiE3swYlZgNYE= Received: from mail-ej1-f72.google.com (mail-ej1-f72.google.com [209.85.218.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-418-MW2Ajpf5OQuaZsqBpcGLCQ-1; Fri, 17 Jul 2020 03:54:33 -0400 X-MC-Unique: MW2Ajpf5OQuaZsqBpcGLCQ-1 Received: by mail-ej1-f72.google.com with SMTP id yh3so5249575ejb.16 for ; Fri, 17 Jul 2020 00:54:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=mCVsudiUaJnZfsa/Js80mZXCIgbfZRyKNbODyzDeHsc=; b=nqXVqoJ0xkbiPEKRgY5ErE7JpQTq61UxuD1oApoOzEHQosT01E1zhkNCckk0v58FAZ 2ircasSslwL0wQ7XqtWmAm6H3rz4F0bYg3AWlosgDpIX6UssUtEBzV+u4ijkQbPuI4Ye xduBoEzFyQwZoq74ZzXzvU9y8qCrKeYPm2ajbmTazvcV5OWEMV/5+Y4yzqjPp5e7VnjH bdwWWk2p/K0dJ+hD3LggyVrc0kAjl2T08KfRL1L0yu8Z0g99XPrER0prTUl09Pk58gyQ aC8jgCTE5IUzBGHXoykIuIRvvohMsepBUGDN6AtlpWD+LeEusB3dSNrUhcTEZ9tJw6m8 ZTwg== X-Gm-Message-State: AOAM5333s1mo9fpeUQy7vmLGuCrCUB5mFvQelBhiy3FKRIgXK//QiGG1 UWYAKCsikIrYbPf0bx2ekqd/jMEIiazwHWinj8bsjTDvRMoEahJQR6+uxla2RW3thDf/ErktOcd mZHrTr9XtSQyL57Qa+lX9S6OnN5FLvTIW3w== X-Received: by 2002:a05:6402:128c:: with SMTP id w12mr8386842edv.65.1594972472438; Fri, 17 Jul 2020 00:54:32 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxLKN6gyw2bSTiwmuJkYyGhJ40svEPXSZ9d0JZod1YuwomtXujKsvrP2uzhY6aXV7fbZddiMBwbXT37wvkoyuk= X-Received: by 2002:a05:6402:128c:: with SMTP id w12mr8386835edv.65.1594972472226; Fri, 17 Jul 2020 00:54:32 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Mauro Matteo Cascella Date: Fri, 17 Jul 2020 09:54:21 +0200 Message-ID: Subject: Re: [oss-security] Xen Security Advisory 329 v2 - Linux ioperm bitmap context switching issues To: oss-security@lists.openwall.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: multipart/alternative; boundary="000000000000a245b105aa9e773c" X-Mailman-Approved-At: Sun, 19 Jul 2020 17:24:08 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xen.org, xen-announce@lists.xen.org, "Xen.org security team" , xen-devel@lists.xen.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --000000000000a245b105aa9e773c Content-Type: text/plain; charset="UTF-8" Hello, Will a CVE be assigned to this flaw? Thanks, On Thu, Jul 16, 2020 at 3:21 PM Xen.org security team wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > Xen Security Advisory XSA-329 > version 2 > > Linux ioperm bitmap context switching issues > > UPDATES IN VERSION 2 > ==================== > > Public release. > > ISSUE DESCRIPTION > ================= > > Linux 5.5 overhauled the internal state handling for the iopl() and > ioperm() > system calls. Unfortunately, one aspect on context switch wasn't wired up > correctly for the Xen PVOps case. > > IMPACT > ====== > > IO port permissions don't get rescinded when context switching to an > unprivileged task. Therefore, all userspace can use the IO ports granted > to > the most recently scheduled task with IO port permissions. > > VULNERABLE SYSTEMS > ================== > > Only x86 guests are vulnerable. > > All versions of Linux from 5.5 are potentially vulnerable. > > Linux is only vulnerable when running as x86 PV guest. Linux is not > vulnerable when running as an x86 HVM/PVH guests. > > The vulnerability can only be exploited in domains which have been granted > access to IO ports by Xen. This is typically only the hardware domain, and > guests configured with PCI Passthrough. > > MITIGATION > ========== > > Running only HVM/PVH guests avoids the vulnerability. > > CREDITS > ======= > > This issue was discovered by Andy Lutomirski. > > RESOLUTION > ========== > > Applying the appropriate attached patch resolves this issue. > > xsa329.patch Linux 5.5 and later > > $ sha256sum xsa329* > cdb5ac9bfd21192b5965e8ec0a1c4fcf12d0a94a962a8158cd27810e6aa362f0 > xsa329.patch > $ > > DEPLOYMENT DURING EMBARGO > ========================= > > Deployment of the patches and/or mitigations described above (or > others which are substantially similar) is permitted during the > embargo, even on public-facing systems with untrusted guest users and > administrators. > > But: Distribution of updated software is prohibited (except to other > members of the predisclosure list). > > Predisclosure list members who wish to deploy significantly different > patches and/or mitigations, please contact the Xen Project Security > Team. > > > (Note: this during-embargo deployment notice is retained in > post-embargo publicly released Xen Project advisories, even though it > is then no longer applicable. This is to enable the community to have > oversight of the Xen Project Security Team's decisionmaking.) > > For more information about permissible uses of embargoed information, > consult the Xen Project community's agreed Security Policy: > http://www.xenproject.org/security-policy.html > -----BEGIN PGP SIGNATURE----- > > iQFABAEBCAAqFiEEI+MiLBRfRHX6gGCng/4UyVfoK9kFAl8QU6EMHHBncEB4ZW4u > b3JnAAoJEIP+FMlX6CvZ/sEIAMiCOnz119KTlRU50HTwa4pvIgLphf9htTbPzHXS > iEb8yINqMxmep8NRcAzwFREQP+Z4Tue1upt31Vx0RPkFZpUklLuuBSXsV0JA7+UM > LSGyWhkzDdnfj6iPUHycGmFzRTzkbB7qfcMj7khCvuYtSNbTUdOgUq04ngZksrSJ > UMhfgUNKXawULKvVe7572L/AQTmMXK8eaolb+eWtf1U2pFkZQR8GWoLmiFbKLks2 > X2tRUF4U4cHEBzxXRzYrD1ArWLajqK6hQmauwgkCCSowvCHoD1dTv55GlrlEo4od > MSB6YOVLl7HJuUw1GmwlKjA8XqStHq1Fi0urvlKCfHfK2Wk= > =MP+m > -----END PGP SIGNATURE----- > -- Mauro Matteo Cascella, Red Hat Product Security 6F78 E20B 5935 928C F0A8 1A9D 4E55 23B8 BB34 10B0 --000000000000a245b105aa9e773c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello,

Will a CVE be assigned to this f= law?

Thanks,

On Thu, Jul 16, 2020 at 3:21 PM = Xen.org security team <security@xen.= org> wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Xen S= ecurity Advisory XSA-329
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 version 2

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Linux ioperm bitmap context= switching issues

UPDATES IN VERSION 2
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

Public release.

ISSUE DESCRIPTION
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

Linux 5.5 overhauled the internal state handling for the iopl() and ioperm(= )
system calls.=C2=A0 Unfortunately, one aspect on context switch wasn't = wired up
correctly for the Xen PVOps case.

IMPACT
=3D=3D=3D=3D=3D=3D

IO port permissions don't get rescinded when context switching to an unprivileged task.=C2=A0 Therefore, all userspace can use the IO ports gran= ted to
the most recently scheduled task with IO port permissions.

VULNERABLE SYSTEMS
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

Only x86 guests are vulnerable.

All versions of Linux from 5.5 are potentially vulnerable.

Linux is only vulnerable when running as x86 PV guest.=C2=A0 Linux is not vulnerable when running as an x86 HVM/PVH guests.

The vulnerability can only be exploited in domains which have been granted<= br> access to IO ports by Xen.=C2=A0 This is typically only the hardware domain= , and
guests configured with PCI Passthrough.

MITIGATION
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

Running only HVM/PVH guests avoids the vulnerability.

CREDITS
=3D=3D=3D=3D=3D=3D=3D

This issue was discovered by Andy Lutomirski.

RESOLUTION
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

Applying the appropriate attached patch resolves this issue.

xsa329.patch=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Linux 5.5 and later
$ sha256sum xsa329*
cdb5ac9bfd21192b5965e8ec0a1c4fcf12d0a94a962a8158cd27810e6aa362f0=C2=A0 xsa3= 29.patch
$

DEPLOYMENT DURING EMBARGO
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=

Deployment of the patches and/or mitigations described above (or
others which are substantially similar) is permitted during the
embargo, even on public-facing systems with untrusted guest users and
administrators.

But: Distribution of updated software is prohibited (except to other
members of the predisclosure list).

Predisclosure list members who wish to deploy significantly different
patches and/or mitigations, please contact the Xen Project Security
Team.


(Note: this during-embargo deployment notice is retained in
post-embargo publicly released Xen Project advisories, even though it
is then no longer applicable.=C2=A0 This is to enable the community to have=
oversight of the Xen Project Security Team's decisionmaking.)

For more information about permissible uses of embargoed information,
consult the Xen Project community's agreed Security Policy:
=C2=A0 http://www.xenproject.org/security-policy.html<= /a>
-----BEGIN PGP SIGNATURE-----

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iEb8yINqMxmep8NRcAzwFREQP+Z4Tue1upt31Vx0RPkFZpUklLuuBSXsV0JA7+UM
LSGyWhkzDdnfj6iPUHycGmFzRTzkbB7qfcMj7khCvuYtSNbTUdOgUq04ngZksrSJ
UMhfgUNKXawULKvVe7572L/AQTmMXK8eaolb+eWtf1U2pFkZQR8GWoLmiFbKLks2
X2tRUF4U4cHEBzxXRzYrD1ArWLajqK6hQmauwgkCCSowvCHoD1dTv55GlrlEo4od
MSB6YOVLl7HJuUw1GmwlKjA8XqStHq1Fi0urvlKCfHfK2Wk=3D
=3DMP+m
-----END PGP SIGNATURE-----


--
Mauro Matteo Cascella, Red Hat = Product Security
6F78 E20B 5935 928C F0A8=C2=A0 1A9D 4E55 23B8 BB34 10B= 0
--000000000000a245b105aa9e773c-- From xen-users-bounces@lists.xenproject.org Mon Jul 20 08:55:07 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 20 Jul 2020 08:55:07 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxRYM-00019F-Nx; Mon, 20 Jul 2020 08:53:42 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxRYL-00019A-TJ for xen-users@lists.xenproject.org; Mon, 20 Jul 2020 08:53:41 +0000 X-Inumbo-ID: 80cbd548-ca66-11ea-9f71-12813bfff9fa Received: from mamuts.risinajumi.lv (unknown [212.70.177.194]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 80cbd548-ca66-11ea-9f71-12813bfff9fa; Mon, 20 Jul 2020 08:53:38 +0000 (UTC) Received: by mamuts.risinajumi.lv (Postfix, from userid 65534) id 3B6AE6AFBA; Mon, 20 Jul 2020 11:57:23 +0300 (EEST) X-Spam-Checker-Version: SpamAssassin 3.2.2 (2007-07-23) on mamuts.risinajumi.lv X-Spam-Level: * X-Spam-Status: No, score=1.4 required=9.5 tests=FH_DATE_PAST_20XX autolearn=no version=3.2.2 Received: from smtp.risinajumi.lv (smtp.risinajumi.lv [212.70.177.201]) by mamuts.risinajumi.lv (Postfix) with ESMTP id E94686A512; Mon, 20 Jul 2020 11:57:19 +0300 (EEST) Received: from [192.168.1.7] (unknown [80.89.73.88]) by smtp.risinajumi.lv (Postfix) with ESMTPA id 06375F12CA; Mon, 20 Jul 2020 11:53:35 +0300 (EEST) Subject: Re: Debian 10, xen 4.11 reliability To: Sarah Newman , Hans van Kranenburg , Adam Goryachev , xen-users@lists.xenproject.org, Casper References: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> <43b22817-71c6-c2ef-4998-31ebf5d0b863@websitemanagers.com.au> <9d58daf3-133f-2157-ed18-c8ab020f9627@knorrie.org> From: Casper Message-ID: Date: Mon, 20 Jul 2020 11:53:28 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hello, I can report I have root and rest fs ext3 too, but is it correct Debian uses ext4 for mounting ext3? [ 8.314622] EXT4-fs (md0): mounting ext3 file system using the ext4 subsystem [ 10.192765] EXT4-fs (md0): mounted filesystem with ordered data mode. Opts: (null) All domU use ext3, even new debian machines. Casper On 16.07.20 06:57, Sarah Newman wrote: > On 7/14/20 2:00 AM, Hans van Kranenburg wrote: >> On 7/14/20 1:16 AM, Adam Goryachev wrote: >>> >>> On 14/7/20 03:02, Hans van Kranenburg wrote: >>>> Hi Casper, >>>> >>>> On 7/9/20 10:45 AM, Casper wrote: >>>>> [...] >>>>> Or problem with Debian Xen package as it not so popular anymore? >>>>> Any suggestion what to test to figure out problem? >>> >>> BTW, I don't think is a general rule that Debian 10.4 with packages Xen >>> 4.11 doesn't work. >> >> True. It just works (tm), until you have some edge case hardware that >> misbehaves, or you run into an edge case bug with a very specific >> combination of non-default configuration here and there (or when you try >> to use EFI, cough). >> >> So, to add to the list: >> * Run latest BIOS / cpu microcode that is available. >> * Other firmware, e.g. for raid controller or whatever? >> * Is the box using ECC memory? I mean, even a memory module that flips a >> bit now and then can crash a server every few weeks... Run a memtest or >> 7zip benchmark or what was the thing that's very good at exposing memory >> errors... >> >> Also, feel free to open a bug report in the Debian bug tracker, we're >> willing to help, but expect that you have to do the work to gather all >> info. I don't have a similar piece of hardware lying around here... What >> distro package maintainers can do is help users to gather enough info to >> have a good report that doesn't waste too much time of the upstream >> developers. > > Here is a bug I opened a week ago against Debian Buster: > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964494 > > It looks like only newer versions of the kernel are a problem. We think > the trigger is either ext3 or Xen. > > The problem may not show up for weeks, and we do not know what triggers it. > > If anyone has more data points to add that would help isolate the issue > to one or the other, it would be appreciated. > > --Sarah From xen-users-bounces@lists.xenproject.org Mon Jul 20 13:46:00 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 20 Jul 2020 13:46:00 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxW6D-0002uG-8F; Mon, 20 Jul 2020 13:44:57 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxW6B-0002uB-QM for xen-users@lists.xen.org; Mon, 20 Jul 2020 13:44:55 +0000 X-Inumbo-ID: 2ff209ac-ca8f-11ea-9fa7-12813bfff9fa Received: from esa5.hc3370-68.iphmx.com (unknown [216.71.155.168]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 2ff209ac-ca8f-11ea-9fa7-12813bfff9fa; Mon, 20 Jul 2020 13:44:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1595252693; h=subject:to:cc:references:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=OuiEP3D65JBIDm2R1AzKgKM4VFlaTnShCJIfjbHA2Dg=; b=LkgaOjcLyiChOPc4jVy8esxPqsRJmHJ7LKxIsxxh6DKd1II1cn6kUVdA kC4xN0czVrluqNGZd/1URpkMpnVY5PzcYplqL62qyKR+osQVFVTDLh/+S RRGFO5WK8KoQnczx1Yb6uqX1lKmsDBa6rrPrndOAQ7pYwPAc/Jtk9TSX/ Q=; Authentication-Results: esa5.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none IronPort-SDR: sNyUv7VO9pjGKXyswLM1TpeV6PWBf4YBhqlfyQbFFMeziSp3EwpWsVcfqABUCpw1FTCaHzUAiw ij+9alrRXwiPyLEBu6RgqkIuhM2WIGLbZSOWCqIIbO68a5oGUBt368oGDD0ovD2gTxmpgexUKM IxtU0mpQjgJv2B64F5+kc99RKPJavAYpwe3+EpvVgVOYKPcCJjIYnxqg0a86mOx6MBgv01FDqk pSc2vBe4DWoIs8K1Aw7NS9AJkkc8+b9OvYFvBzQr6fG4PvAmAMDLFn1LLnSNvZarYUi58i0etn H6c= X-SBRS: 2.7 X-MesageID: 22950362 X-Ironport-Server: esa5.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.75,375,1589256000"; d="scan'208";a="22950362" Subject: Re: [oss-security] Xen Security Advisory 329 v2 - Linux ioperm bitmap context switching issues To: Mauro Matteo Cascella , References: From: Andrew Cooper Message-ID: <57e20b43-53cb-acc6-2634-4fc3b29e2312@citrix.com> Date: Mon, 20 Jul 2020 14:44:48 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Content-Language: en-GB X-ClientProxiedBy: AMSPEX02CAS02.citrite.net (10.69.22.113) To AMSPEX02CL02.citrite.net (10.69.22.126) X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xen.org, xen-announce@lists.xen.org, "Xen.org security team" , xen-devel@lists.xen.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" /sigh - it seems that stuff like this doesn't get done when I'm on holiday. I'll get one sorted. ~Andrew On 17/07/2020 08:54, Mauro Matteo Cascella wrote: > Hello, > > Will a CVE be assigned to this flaw? > > Thanks, > > On Thu, Jul 16, 2020 at 3:21 PM Xen.org security team > wrote: > >                     Xen Security Advisory XSA-329 >                               version 2 > >              Linux ioperm bitmap context switching issues > > UPDATES IN VERSION 2 > ==================== > > Public release. > > ISSUE DESCRIPTION > ================= > > Linux 5.5 overhauled the internal state handling for the iopl() and > ioperm() > system calls.  Unfortunately, one aspect on context switch wasn't wired up > correctly for the Xen PVOps case. > > IMPACT > ====== > > IO port permissions don't get rescinded when context switching to an > unprivileged task.  Therefore, all userspace can use the IO ports > granted to > the most recently scheduled task with IO port permissions. > > VULNERABLE SYSTEMS > ================== > > Only x86 guests are vulnerable. > > All versions of Linux from 5.5 are potentially vulnerable. > > Linux is only vulnerable when running as x86 PV guest.  Linux is not > vulnerable when running as an x86 HVM/PVH guests. > > The vulnerability can only be exploited in domains which have been granted > access to IO ports by Xen.  This is typically only the hardware > domain, and > guests configured with PCI Passthrough. > > MITIGATION > ========== > > Running only HVM/PVH guests avoids the vulnerability. > > CREDITS > ======= > > This issue was discovered by Andy Lutomirski. > > RESOLUTION > ========== > > Applying the appropriate attached patch resolves this issue. > > xsa329.patch           Linux 5.5 and later > > $ sha256sum xsa329* > cdb5ac9bfd21192b5965e8ec0a1c4fcf12d0a94a962a8158cd27810e6aa362f0  > xsa329.patch > $ > > DEPLOYMENT DURING EMBARGO > ========================= > > Deployment of the patches and/or mitigations described above (or > others which are substantially similar) is permitted during the > embargo, even on public-facing systems with untrusted guest users and > administrators. > > But: Distribution of updated software is prohibited (except to other > members of the predisclosure list). > > Predisclosure list members who wish to deploy significantly different > patches and/or mitigations, please contact the Xen Project Security > Team. > > > (Note: this during-embargo deployment notice is retained in > post-embargo publicly released Xen Project advisories, even though it > is then no longer applicable.  This is to enable the community to have > oversight of the Xen Project Security Team's decisionmaking.) > > For more information about permissible uses of embargoed information, > consult the Xen Project community's agreed Security Policy: >   http://www.xenproject.org/security-policy.html > > > > -- > Mauro Matteo Cascella, Red Hat Product Security > 6F78 E20B 5935 928C F0A8  1A9D 4E55 23B8 BB34 10B0 From xen-users-bounces@lists.xenproject.org Mon Jul 20 17:00:53 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 20 Jul 2020 17:00:53 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxZ8W-0003bQ-HL; Mon, 20 Jul 2020 16:59:32 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxZ8U-0003bJ-NB for xen-users@lists.xenproject.org; Mon, 20 Jul 2020 16:59:30 +0000 X-Inumbo-ID: 5dcfa60c-caaa-11ea-84a8-bc764e2007e4 Received: from mamuts.risinajumi.lv (unknown [212.70.177.194]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 5dcfa60c-caaa-11ea-84a8-bc764e2007e4; Mon, 20 Jul 2020 16:59:25 +0000 (UTC) Received: by mamuts.risinajumi.lv (Postfix, from userid 65534) id 84AC06AFA2; Mon, 20 Jul 2020 20:03:12 +0300 (EEST) X-Spam-Checker-Version: SpamAssassin 3.2.2 (2007-07-23) on mamuts.risinajumi.lv X-Spam-Level: * X-Spam-Status: No, score=1.4 required=9.5 tests=FH_DATE_PAST_20XX autolearn=no version=3.2.2 Received: from smtp.risinajumi.lv (smtp.risinajumi.lv [212.70.177.201]) by mamuts.risinajumi.lv (Postfix) with ESMTP id 6906D6A512; Mon, 20 Jul 2020 20:03:08 +0300 (EEST) Received: from [192.168.1.7] (unknown [80.89.73.88]) by smtp.risinajumi.lv (Postfix) with ESMTPA id 257DDF1253; Mon, 20 Jul 2020 19:59:23 +0300 (EEST) Subject: Re: Debian 10, xen 4.11 reliability To: Sarah Newman , Hans van Kranenburg , Adam Goryachev , xen-users@lists.xenproject.org References: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> <43b22817-71c6-c2ef-4998-31ebf5d0b863@websitemanagers.com.au> <9d58daf3-133f-2157-ed18-c8ab020f9627@knorrie.org> From: Casper Message-ID: <04fe5766-1174-9456-c9b9-30197b3762f3@os.lv> Date: Mon, 20 Jul 2020 19:59:16 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Was playing with system little bit, got only day uptime and it crashed this time with diff. msg: Jul 20 19:20:28 test systemd[1]: Stopping Availability of block devices... Jul 20 19:20:28 test systemd[1]: session-1.scope: Killing process 866 (screen) with signal SIGTERM. Jul 20 19:20:28 test systemd[1]: session-1.scope: Killing process 867 (bash) with signal SIGTERM. Jul 20 19:20:28 test systemd[1]: session-1.scope: Killing process 955 (bash) with signal SIGTERM. Jul 20 19:20:28 test systemd[1]: session-1.scope: Killing process 30295 (ssh) with signal SIGTERM. Jul 20 19:20:28 test systemd[1]: session-1.scope: Killing process 30298 (sshfs) with signal SIGTERM. Jul 20 19:20:28 test systemd[1]: session-1.scope: Killing process 30307 (ssh) with signal SIGTERM. Jul 20 19:20:28 test systemd[1]: session-1.scope: Killing process 30310 (sshfs) with signal SIGTERM. Jul 20 19:20:28 test systemd[1]: session-1.scope: Killing process 2730 (xl) with signal SIGTERM. Jul 20 19:20:28 test systemd[1]: session-1.scope: Killing process 3061 (xl) with signal SIGTERM. Jul 20 19:20:28 test systemd[1]: Stopping Session 1 of user casper. Jul 20 19:20:28 test systemd[1]: Stopping Session 352 of user casper. Jul 20 19:20:28 test systemd[1]: Stopping LVM event activation on device 9:2... Jul 20 19:20:28 test systemd[1]: Stopping Session 419 of user root. Jul 20 19:20:28 test systemd[1]: lvm2-lvmpolld.socket: Succeeded. Jul 20 19:20:28 test systemd[1]: Closed LVM2 poll daemon socket. Jul 20 19:20:28 test systemd[1]: Stopped target Graphical Interface. Jul 20 19:20:28 test systemd[1]: Stopped target Multi-User System. On 20.07.20 11:53, Casper wrote: > Hello, > > I can report I have root and rest fs ext3 too, but is it correct Debian > uses ext4 for mounting ext3? > > [    8.314622] EXT4-fs (md0): mounting ext3 file system using the ext4 > subsystem > [   10.192765] EXT4-fs (md0): mounted filesystem with ordered data mode. > Opts: (null) > > All domU use ext3, even new debian machines. > > Casper > > On 16.07.20 06:57, Sarah Newman wrote: >> On 7/14/20 2:00 AM, Hans van Kranenburg wrote: >>> On 7/14/20 1:16 AM, Adam Goryachev wrote: >>>> >>>> On 14/7/20 03:02, Hans van Kranenburg wrote: >>>>> Hi Casper, >>>>> >>>>> On 7/9/20 10:45 AM, Casper wrote: >>>>>> [...] >>>>>> Or problem with Debian Xen package as it not so popular anymore? >>>>>> Any suggestion what to test to figure out problem? >>>> >>>> BTW, I don't think is a general rule that Debian 10.4 with packages Xen >>>> 4.11 doesn't work. >>> >>> True. It just works (tm), until you have some edge case hardware that >>> misbehaves, or you run into an edge case bug with a very specific >>> combination of non-default configuration here and there (or when you try >>> to use EFI, cough). >>> >>> So, to add to the list: >>> * Run latest BIOS / cpu microcode that is available. >>> * Other firmware, e.g. for raid controller or whatever? >>> * Is the box using ECC memory? I mean, even a memory module that flips a >>> bit now and then can crash a server every few weeks... Run a memtest or >>> 7zip benchmark or what was the thing that's very good at exposing memory >>> errors... >>> >>> Also, feel free to open a bug report in the Debian bug tracker, we're >>> willing to help, but expect that you have to do the work to gather all >>> info. I don't have a similar piece of hardware lying around here... What >>> distro package maintainers can do is help users to gather enough info to >>> have a good report that doesn't waste too much time of the upstream >>> developers. >> >> Here is a bug I opened a week ago against Debian Buster: >> >> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964494 >> >> It looks like only newer versions of the kernel are a problem. We >> think the trigger is either ext3 or Xen. >> >> The problem may not show up for weeks, and we do not know what >> triggers it. >> >> If anyone has more data points to add that would help isolate the >> issue to one or the other, it would be appreciated. >> >> --Sarah From xen-users-bounces@lists.xenproject.org Mon Jul 20 17:26:30 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 20 Jul 2020 17:26:30 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxZXa-0006YX-MJ; Mon, 20 Jul 2020 17:25:26 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxZXZ-0006YS-7l for xen-users@lists.xenproject.org; Mon, 20 Jul 2020 17:25:25 +0000 X-Inumbo-ID: fe8a52e2-caad-11ea-84ac-bc764e2007e4 Received: from mail.prgmr.com (unknown [2605:2700:0:5::4713:9506]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id fe8a52e2-caad-11ea-84ac-bc764e2007e4; Mon, 20 Jul 2020 17:25:24 +0000 (UTC) Received: from [192.168.2.47] (c-174-62-72-237.hsd1.ca.comcast.net [174.62.72.237]) (Authenticated sender: srn) by mail.prgmr.com (Postfix) with ESMTPSA id F2AC572008F; Mon, 20 Jul 2020 13:25:22 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.prgmr.com F2AC572008F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=prgmr.com; s=default; t=1595265923; bh=+gclCOEZaAHoVUIhFOPnHqIJ4o6YrCHGWleOYkmX//I=; h=Subject:To:References:From:Date:In-Reply-To:From; b=QN0R2tBbVhS+nsrNZX+cNKccSwZyviy7YmeqFLpapVSiOOvg+bXIOraSyCIf9mNYQ gJOuWfKCxqteiMVNdNapdMr9EXjp6PqNsb3acda4MutxXYSpDeReObBm6iVbtQxgNf zjPdkTC7LavmP/4Q6f4HA+1qoXsAG8aBr8jOH2QU= Subject: Re: Debian 10, xen 4.11 reliability To: Casper , Hans van Kranenburg , Adam Goryachev , xen-users@lists.xenproject.org References: <44a022ab-2841-55f7-b165-60fcc3b644b2@knorrie.org> <43b22817-71c6-c2ef-4998-31ebf5d0b863@websitemanagers.com.au> <9d58daf3-133f-2157-ed18-c8ab020f9627@knorrie.org> From: Sarah Newman Message-ID: <3db2b3d4-ac73-db74-3f44-2465c78ea8b3@prgmr.com> Date: Mon, 20 Jul 2020 10:25:22 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 7/20/20 1:53 AM, Casper wrote: > Hello, > > I can report I have root and rest fs ext3 too, but is it correct Debian uses ext4 for mounting ext3? > > [    8.314622] EXT4-fs (md0): mounting ext3 file system using the ext4 subsystem > [   10.192765] EXT4-fs (md0): mounted filesystem with ordered data mode. Opts: (null) > > All domU use ext3, even new debian machines. > > Casper Hi Casper, That still counts as ext3, the functionality has simply been taken over by the ext4 module. You should probably upgrade to ext4 per https://debian-administration.org/article/643/Migrating_a_live_system_from_ext3_to_ext4_filesystem --Sarah From xen-users-bounces@lists.xenproject.org Tue Jul 21 11:03:33 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Tue, 21 Jul 2020 11:03:33 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxq2F-0008Gz-Ft; Tue, 21 Jul 2020 11:02:11 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxq2E-0008FW-JK for xen-users@lists.xen.org; Tue, 21 Jul 2020 11:02:10 +0000 X-Inumbo-ID: 99b106f6-cb41-11ea-84fe-bc764e2007e4 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 99b106f6-cb41-11ea-84fe-bc764e2007e4; Tue, 21 Jul 2020 11:02:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Date:Message-Id:Subject:CC:From:To:MIME-Version: Content-Transfer-Encoding:Content-Type:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=rG/yjzz16rNFLpv3o/8yFDCoEwHYZ2FiTwqh9jkLt3M=; b=rx4xY51uu4vIg1rQZB6PVlYekh n9YU/P4nL7fGhMMR1ssHfAcYdi4ImR26oW44a4SdEtDx/Uhve0Zu73JQ6SZytx4tHeZU3/jydqNR+ BG2aM91+m6URSSbNIOn9Yjfpg7hyKe0mFLZBe/fUUk8vl3L4mowutWmVf1EuI4bMP/50=; Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxq1y-0003wa-6u; Tue, 21 Jul 2020 11:01:54 +0000 Received: from iwj by xenbits.xenproject.org with local (Exim 4.92) (envelope-from ) id 1jxq1y-0007MA-2r; Tue, 21 Jul 2020 11:01:54 +0000 Content-Type: multipart/mixed; boundary="=separator"; charset="utf-8" Content-Transfer-Encoding: binary MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) To: xen-announce@lists.xen.org, xen-devel@lists.xen.org, xen-users@lists.xen.org, oss-security@lists.openwall.com From: Xen.org security team Subject: Xen Security Advisory 329 v3 (CVE-2020-15852) - Linux ioperm bitmap context switching issues Message-Id: Date: Tue, 21 Jul 2020 11:01:54 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "Xen.org security team" Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --=separator Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Xen Security Advisory CVE-2020-15852 / XSA-329 version 3 Linux ioperm bitmap context switching issues UPDATES IN VERSION 3 ==================== CVE assigned. ISSUE DESCRIPTION ================= Linux 5.5 overhauled the internal state handling for the iopl() and ioperm() system calls. Unfortunately, one aspect on context switch wasn't wired up correctly for the Xen PVOps case. IMPACT ====== IO port permissions don't get rescinded when context switching to an unprivileged task. Therefore, all userspace can use the IO ports granted to the most recently scheduled task with IO port permissions. VULNERABLE SYSTEMS ================== Only x86 guests are vulnerable. All versions of Linux from 5.5 are potentially vulnerable. Linux is only vulnerable when running as x86 PV guest. Linux is not vulnerable when running as an x86 HVM/PVH guests. The vulnerability can only be exploited in domains which have been granted access to IO ports by Xen. This is typically only the hardware domain, and guests configured with PCI Passthrough. MITIGATION ========== Running only HVM/PVH guests avoids the vulnerability. CREDITS ======= This issue was discovered by Andy Lutomirski. RESOLUTION ========== Applying the appropriate attached patch resolves this issue. xsa329.patch Linux 5.5 and later $ sha256sum xsa329* cdb5ac9bfd21192b5965e8ec0a1c4fcf12d0a94a962a8158cd27810e6aa362f0 xsa329.patch $ DEPLOYMENT DURING EMBARGO ========================= Deployment of the patches and/or mitigations described above (or others which are substantially similar) is permitted during the embargo, even on public-facing systems with untrusted guest users and administrators. But: Distribution of updated software is prohibited (except to other members of the predisclosure list). Predisclosure list members who wish to deploy significantly different patches and/or mitigations, please contact the Xen Project Security Team. (Note: this during-embargo deployment notice is retained in post-embargo publicly released Xen Project advisories, even though it is then no longer applicable. This is to enable the community to have oversight of the Xen Project Security Team's decisionmaking.) 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Xen Security Advisory 329 v3 (CVE-2020-15852) - Linux ioperm bitmap context switching issues In-Reply-To: References: User-Agent: Roundcube Webmail/1.4.6 Message-ID: <5f8e64da9014b2b2bb41aaf60736b558@gmx.de> X-Sender: mangel@gmx.de Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on satan.chao5.int X-Provags-ID: V03:K1:HdjPK0WUx8nOH5vyXJUT4pejhcniQg22t7q7jXs5UZY16cOU/2D Kqxg9bH6zxvGPlf9/pMSRx3G0pFHCaHepsoVIYWDiaob1mXiPKm9asxBmZILgm2KiWk86Kp iTfuAPgL0bxuvuJqVvj4lFEQsMNlhAXa+YdpWoSGtGs3Cm0fl20ZN+2HVGbFYc7RtELJY1w hFtfLgDaqGF3RP1NKTesg== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:RZvKnYVcJRg=:JKNJ0sdmPWGOUm9mfJAQhN KYAwleMoc8zyTsjuPVCZIH+QXiB0q12hHKg2ZRKIub2Nc/J23Y/MH77tREEerD9weChw8R5Xm XDPb+7st2ObYMvYKTu+5HNwpVvSVKhZ/rgltsQGobjzje/X8Yqj353HqU/bOy1zTPdcqCretM 3O8lSJcGDvoa5Ppb+xPIs0LKRFaptoi6aLJMPFs9kvqIPZuW+eB2YzRscQ7SpWezPq4NHFlLo b1sOGJxqYJngrZMaF6x1Hc1SHukgfg0fQPALxKCqPyximU3a1rJYpksrDJwDDdzLzvBg2k3De x7UrpZg6Gxq+Ffrx5veW7CPjmjzIyTHC9BSa7p1ZOPBtGwXKkbbwJoOYuNXdWHGL1dQchC8nK 0z8HC4Li9hhMMn/vabmMMLw0TuRmFeiMz8AB3F1ns+HCVvdQvNLeewlvCGFxRjXQw/AAWu+qs 91aQVlvboTLgQhyckXmJtGu1wKzXD4QhGXwtxUVWBRxz23Ydlwe/AWU5+RbPjCJEczcJiW7Bh CMMJr9K3/dG2v9UULLxOfH38NRxJuFgGssAP45pv7KVHwAmZ0vRquqgRoO2DUTndktVCHxbKE FQycjsTlLTfh3miow53PQJQ9H/NHkrENFnfqo4rS5IqnGPkOHopp/+1zbibZtuW4y3LScsCCm Vsdq8gRK+H2L4/q4318EPbVfUzfBSKfrbUSLr4csgcVbgL9TJQqt5eiEOm/ng0lZ2JbOj3lEk mB5ZECE3XnNpQvDuJRtWt9FetbzqwWhpcK5QXqD3aj+e/AxUaL2ZCaufB59uC2nJV16Qqu4ay EOS1Fsi06UH5d0l8AdOAXqHpDj+CYtotid1Nd02IW7QPn/z2cp8RKXp8Gd4CMUaxNNtz4YLXm 5IlOe6yIGLkvx0jSNgu2pxvJV2ukc1YlXSVgWObCC9yKR2rc4Q2ZnBKkwmTV0t7ZF8eEUjweS /HV0AOmA8l/ecewGiZbFQzjqXKg2qERd/KJrYEP4E1vnE7+kaqZKRCENsUstEdrizfXzIAxtq p7HTqc2CFLsGynzoHylL+tzTiYhKdmNuEB7lK8p0J/5Oct5lt0S2sX9x2F2GT/OSxkFN1qrqa Kh3R05/bI2oip3oEq3xTFGoHbbXNmcDizg8dGPFgXb1bgF/H89CHljsxf5CiChr+KodBbjkMK 2dFL7Zf++TNWPGhptlg42NZ16YVbNU6PfEQzL8cxu+1AEPcAety2Wb3xghulZo5cTsXxi2ipC bvf3BFePvRvVA+U/Y X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xen.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hi, if I build the next xen version, for example xen 4.14-rc7 (when its available). Does it ever include such a patch? =2D-- =2D----- Greetz Am 21.07.2020 13:01, schrieb Xen.org security team: > Xen Security Advisory CVE-2020-15852 / XSA-329 > version 3 > > Linux ioperm bitmap context switching issues > > UPDATES IN VERSION 3 > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > CVE assigned. > > ISSUE DESCRIPTION > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > Linux 5.5 overhauled the internal state handling for the iopl() and > ioperm() > system calls. Unfortunately, one aspect on context switch wasn't wired > up > correctly for the Xen PVOps case. > > IMPACT > =3D=3D=3D=3D=3D=3D > > IO port permissions don't get rescinded when context switching to an > unprivileged task. Therefore, all userspace can use the IO ports > granted to > the most recently scheduled task with IO port permissions. > > VULNERABLE SYSTEMS > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > Only x86 guests are vulnerable. > > All versions of Linux from 5.5 are potentially vulnerable. > > Linux is only vulnerable when running as x86 PV guest. Linux is not > vulnerable when running as an x86 HVM/PVH guests. > > The vulnerability can only be exploited in domains which have been > granted > access to IO ports by Xen. This is typically only the hardware domain, > and > guests configured with PCI Passthrough. > > MITIGATION > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > Running only HVM/PVH guests avoids the vulnerability. > > CREDITS > =3D=3D=3D=3D=3D=3D=3D > > This issue was discovered by Andy Lutomirski. > > RESOLUTION > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > Applying the appropriate attached patch resolves this issue. > > xsa329.patch Linux 5.5 and later > > $ sha256sum xsa329* > cdb5ac9bfd21192b5965e8ec0a1c4fcf12d0a94a962a8158cd27810e6aa362f0 > xsa329.patch > $ > > DEPLOYMENT DURING EMBARGO > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D > > Deployment of the patches and/or mitigations described above (or > others which are substantially similar) is permitted during the > embargo, even on public-facing systems with untrusted guest users and > administrators. > > But: Distribution of updated software is prohibited (except to other > members of the predisclosure list). > > Predisclosure list members who wish to deploy significantly different > patches and/or mitigations, please contact the Xen Project Security > Team. > > > (Note: this during-embargo deployment notice is retained in > post-embargo publicly released Xen Project advisories, even though it > is then no longer applicable. This is to enable the community to have > oversight of the Xen Project Security Team's decisionmaking.) > > For more information about permissible uses of embargoed information, > consult the Xen Project community's agreed Security Policy: > http://www.xenproject.org/security-policy.html From xen-users-bounces@lists.xenproject.org Tue Jul 21 11:41:27 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Tue, 21 Jul 2020 11:41:27 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxqdq-00041v-81; Tue, 21 Jul 2020 11:41:02 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jxqdp-00041k-83 for xen-users@lists.xen.org; Tue, 21 Jul 2020 11:41:01 +0000 X-Inumbo-ID: 0c7406d4-cb47-11ea-8503-bc764e2007e4 Received: from esa3.hc3370-68.iphmx.com (unknown [216.71.145.155]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 0c7406d4-cb47-11ea-8503-bc764e2007e4; Tue, 21 Jul 2020 11:41:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1595331661; h=subject:to:cc:references:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=KzpV7ufx/ZFlmYmmyhTYbf1J5+lPfuWcTd91DL6F8oo=; b=X1wxVwJlyxmPmAyKlHjPbCcz8kCWQuLAFUjb67ZsJiZ7Fz6zz2qaNrTA iiYU9jqgDRrLHUvjddGLdD+6QUp/04Tu0Vz29kYu3eqG4M3OqHpql+9ml Lzfabj5qtoIEdPb3CXfjuu55RHh+d14yDfYiWpahkTtpho1etDkqTAR85 I=; Authentication-Results: esa3.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none IronPort-SDR: IgCFT3qqRQ9IBUNIfOIygtczWp3be1Lsz66qNQlOq/OKRN5W6ArUJmK7qeNCQiyLxzL1IODR8c BZYy562cub8+emt9S+kkF0KIPqtC+JNMwHBBnq7dKPDVgAh1odaj94Fb0JaOg5ybpJqjKsn8Be Py1br9KsPLt+usWjFdteu3+gmxk5ZBO/lukrCbhqTH4t6xJE7kY3Vmo77jka9If8bn7VeNYTdW 5JGCQNhMXJmBjPLR9t1MrwZ8fsiNafDZX2VfmAu3pqacDMD1qotEvlf8nP7nrZtEEim1+rIL20 xHI= X-SBRS: 2.7 X-MesageID: 22831926 X-Ironport-Server: esa3.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.75,378,1589256000"; d="scan'208";a="22831926" Subject: Re: Xen Security Advisory 329 v3 (CVE-2020-15852) - Linux ioperm bitmap context switching issues To: Christoph , Xen.org security team References: <5f8e64da9014b2b2bb41aaf60736b558@gmx.de> From: Andrew Cooper Message-ID: Date: Tue, 21 Jul 2020 12:40:55 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <5f8e64da9014b2b2bb41aaf60736b558@gmx.de> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Language: en-GB X-ClientProxiedBy: AMSPEX02CAS02.citrite.net (10.69.22.113) To AMSPEX02CL02.citrite.net (10.69.22.126) X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xen.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 21/07/2020 12:33, Christoph wrote: > Hi, > > if I build the next xen version, for example xen 4.14-rc7 (when its > available). Does it ever include such a patch? Hello, This is a fix to Linux, not a fix to Xen. It is fixed upstream in Linux just in time for the 5.8 release, and should be making its way back into the stable trees in due course. ~Andrew From xen-users-bounces@lists.xenproject.org Fri Jul 24 16:03:01 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 24 Jul 2020 16:03:01 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jz08l-0005Fg-PQ; Fri, 24 Jul 2020 16:01:43 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jz08k-0005FZ-ID for xen-users@lists.xenproject.org; Fri, 24 Jul 2020 16:01:42 +0000 X-Inumbo-ID: f5fea95e-cdc6-11ea-a425-12813bfff9fa Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id f5fea95e-cdc6-11ea-a425-12813bfff9fa; Fri, 24 Jul 2020 16:01:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Reply-To:Message-Id:Date:Subject:To:From:Sender:Cc: MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=ogZM8im0PZvP/3uvGK3JZM+THCjPOOJBt/a9OxuGozA=; b=tyTtdn8czpvLvCjKwcGfOxzmdD toJMPxtzfRirgIXANsEagw43ef26JzgPmM0+3y6QWe6+t/0HfqD2zGTSTblwWt/dyNYAjKvwRPibI NIHPHNAWd0N9BNw33BztOKU1vtwH6EUqoFL5gRbbSstZOp77gMLDf93Yd9D84INQYR4U=; Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jz08i-00046f-58; Fri, 24 Jul 2020 16:01:40 +0000 Received: from host86-143-223-30.range86-143.btcentralplus.com ([86.143.223.30] helo=CBG-R90WXYV0.home) by xenbits.xenproject.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jz08h-0003kp-Su; Fri, 24 Jul 2020 16:01:40 +0000 From: Paul Durrant To: xen-devel@lists.xenproject.org, xen-users@lists.xenproject.org, xen-announce@lists.xenproject.org Subject: [ANNOUNCEMENT] Xen 4.14 is released Date: Fri, 24 Jul 2020 17:01:38 +0100 Message-Id: <20200724160138.129-1-paul@xen.org> X-Mailer: git-send-email 2.17.1 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org, paul@xen.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Dear community members, I'm pleased to announce that Xen 4.14.0 is released. Please find the tarball and its signature at: https://downloads.xenproject.org/release/xen/4.14.0 Git checkout and build instructions can be found at: https://wiki.xenproject.org/wiki/Xen_Project_4.14_Release_Notes#Build_Requirements Release notes can be found at: https://wiki.xenproject.org/wiki/Xen_Project_4.14_Release_Notes A summary for 4.14 release documents can be found at: https://wiki.xenproject.org/wiki/Category:Xen_4.14 Technical blog post for 4.14 can be found at: https://xenproject.org/2020/07/24/xen-project-hypervisor-version-4-14-brings-added-security-and-performance Thanks everyone who contributed to this release. This release would not have happened without all the awesome contributions from the Xen community around the globe. Regards, Paul Durrant (on behalf of the Xen Project Hypervisor team) From xen-users-bounces@lists.xenproject.org Sat Jul 25 12:54:15 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sat, 25 Jul 2020 12:54:15 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzJfP-00084Z-AN; Sat, 25 Jul 2020 12:52:43 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzJfN-00084U-PP for xen-users@lists.xenproject.org; Sat, 25 Jul 2020 12:52:41 +0000 X-Inumbo-ID: b8aa39ce-ce75-11ea-8919-bc764e2007e4 Received: from mail-lf1-x131.google.com (unknown [2a00:1450:4864:20::131]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id b8aa39ce-ce75-11ea-8919-bc764e2007e4; Sat, 25 Jul 2020 12:52:40 +0000 (UTC) Received: by mail-lf1-x131.google.com with SMTP id s9so6629703lfs.4 for ; Sat, 25 Jul 2020 05:52:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=lLua05lDRWBqlTgbxqBo0g5YThQthf/IOjvJaHte5y8=; b=OhSVfEIAtvo8sWofVnDW4iLmfuG20hKQiH98/Smz+dsu1qtjzjBx7w5QXPurpG7kVQ AeiGA1hK0Y8hPGqpFLyQbHnoFXG4qQDKKLdqXT0/NSYceKXLeaH3BcwF/3GmDWpcg/nG lf3Zo16/EuoX9+kMxYkTcvanwfgdkfiuxsuCzxvj1w6C09iaM/4CGk9bXH8CEl7+/ikC +iLctTnrujTXRuSRlasV/SDdzh2z4XAMVTLvXEgXeoLLpt7Cs1bd5nQf4OFt6gebHdDd M6BP+GwLNRkWRG8ys7V4wrVGC7LggZURYbYf8XTlo5n6stoprNqnOJxbBqK8MstSAmHo wHUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=lLua05lDRWBqlTgbxqBo0g5YThQthf/IOjvJaHte5y8=; b=aBM6dKbTA0jMH1ND08PUEfe1zUeqr+KmRopliCD2SmWXqi67klxacY/Bo/owfBKGfP XJEuLXc1C084CXM0pX5fFSeXYQiF8U9rRtCUoYuaItf/7dqYfq9ZU/pYR1ig5thXCJxw a5BTrcYVN+nWoPLR7+zkHHGps+Tu1x3XcY+/gJMYs3ucDH/fH/XaCsy2IFQnVo3GXMuY oZTsfpS95AOstFPrYNd9ZCQL8dkCtUvywZU5Ohar6fLa6qerFhRBBXDE0NLneRhkgh0u t265PgU8Qsgiih/sRVZayrEQPlApUJ8wAOc3+VPM3/93QhkxE+G3WWQxSEOpPEizaqnL 0aLQ== X-Gm-Message-State: AOAM530zqkQtPn1JlDl4tiVpYjAY6Ct/JDOZr0bfuMTrW/ZoW6etqY3p fvQsgNj36iKNKN5KSDenP5MVLuo5VQnPlXg6tgUrW8pV0PY= X-Google-Smtp-Source: ABdhPJwJSb+eapG6l/IgX9SEpYZc+Uz6qv8k7Zm8ssd/d1EnxbogH/lErCGjXKUddurl5EFmFZ7SLC1HrnFmeIH2+8A= X-Received: by 2002:a05:6512:14d:: with SMTP id m13mr7444697lfo.173.1595681558199; Sat, 25 Jul 2020 05:52:38 -0700 (PDT) MIME-Version: 1.0 From: Mario Marietto Date: Sat, 25 Jul 2020 14:52:01 +0200 Message-ID: Subject: libxl: error: libxl_pci.c:1477:libxl__device_pci_reset: The kernel doesn't support reset from sysfs for PCI device 0000:01:00.1 To: xen-users@lists.xenproject.org Content-Type: multipart/related; boundary="000000000000741b2e05ab4390fc" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --000000000000741b2e05ab4390fc Content-Type: multipart/alternative; boundary="000000000000741b2d05ab4390fb" --000000000000741b2d05ab4390fb Content-Type: text/plain; charset="UTF-8" Hello So,please come back to the passthrough of my graphic card with xen,that it does not work. Please note that I'm not trying to use my existing windows 10 installation anymore. Instead I have installed windows 10 from the official microsoft iso image. The cfg file that I'm using is like this : builder='hvm' memory = 8124 name = 'win10' vcpus=6 pae=1 acpi=1 apic=1 vif = [ 'mac=00:16:3e:68:e1:01,type=vif,bridge=xenbr0' ] disk = [ 'phy:/dev/guest/win10,hda,w' , 'file:/media/install/Win10x64.iso,hdb:cdrom,r' ] #device_model_version = 'qemu-xen-traditional' boot='dc' #boot='c' sdl=1 vnc=1 serial='pty' tsc_mode="default" viridian=1 usb=1 usbdevice='tablet' gfx_passthru=0 pci=[ '01:00.0', '01:00.1' , '01:00.2' , '01:00.3' ] localtime=1 xen_platform_pci=1 pci_power_mgmt=1 stdvga = 0 serial = 'pty' on_poweroff = 'destroy' on_reboot = 'destroy' on_crash = 'destroy' device_model_args_hvm = [ # Debug OVMF '-chardev', 'file,id=debugcon,path=/etc/xen/win10.log,', '-device', 'isa-debugcon,iobase=0x402,chardev=debugcon', ] Before to create the guest,I run this script : if [ $# -eq 0 ]; then echo "Require PCI devices in format: ::." echo "Eg: $(basename $0) 0000:00:1b.0" exit 1 fi modprobe xen-pciback for pcidev in $@; do if [ -h /sys/bus/pci/devices/"$pcidev"/driver ]; then echo "Unbinding $pcidev from" $(basename $(readlink /sys/bus/pci/devices/"$pcidev"/driver)) echo -n "$pcidev" > /sys/bus/pci/devices/"$pcidev"/driver/unbind fi echo "Binding $pcidev to pciback" echo -n "$pcidev" > /sys/bus/pci/drivers/pciback/new_slot echo -n "$pcidev" > /sys/bus/pci/drivers/pciback/bind done for 4 times,like this : root@ziomario-I9:/etc/xen# ./pciback-0000:01:00.0.sh 0000:01:00.0 Unbinding 0000:01:00.0 from nvidia Binding 0000:01:00.0 to pciback root@ziomario-I9:/etc/xen# ./pciback-0000:01:00.0.sh 0000:01:00.1 Unbinding 0000:01:00.1 from snd_hda_intel Binding 0000:01:00.1 to pciback root@ziomario-I9:/etc/xen# ./pciback-0000:01:00.0.sh 0000:01:00.2 Unbinding 0000:01:00.2 from xhci_hcd Binding 0000:01:00.2 to pciback root@ziomario-I9:/etc/xen# ./pciback-0000:01:00.0.sh 0000:01:00.3 Unbinding 0000:01:00.3 from nvidia-gpu Binding 0000:01:00.3 to pciback it seems good,but It is not,infact this is what happens when I create the guest : libxl: error: libxl_pci.c:1477:libxl__device_pci_reset: The kernel doesn't support reset from sysfs for PCI device 0000:01:00.1 libxl: error: libxl_pci.c:1477:libxl__device_pci_reset: The kernel doesn't support reset from sysfs for PCI device 0000:01:00.2 libxl: error: libxl_pci.c:1477:libxl__device_pci_reset: The kernel doesn't support reset from sysfs for PCI device 0000:01:00.3 I tried to pass only the first line,like this : pci=[ '01:00.0' ] the guest starts,but : 1) the resolution is black and white,640x480 and I can't increase it 2) the nvidia graphic card can't be installed,it says that it can't be installed on this computer 3) I see two microsoft basic display adapter,no cirrus graphic card. [image: Schermata del 2020-07-25 12-47-56.png] can u give me some suggestion ? --000000000000741b2d05ab4390fb Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello

So,please come back to the passthrough of my = graphic card with xen,that it does not work. Please note that I'm not t= rying to use my existing windows 10 installation anymore. Instead I have in= stalled windows 10 from the official microsoft iso image. The cfg file that= I'm using is like this :

builder=3D'hvm'
memory =3D = 8124
name =3D 'win10'
vcpus=3D6
pae=3D1
acpi=3D1
api= c=3D1
vif =3D [ 'mac=3D00:16:3e:68:e1:01,type=3Dvif,bridge=3Dxenbr0&= #39; ]
disk =3D [ 'phy:/dev/guest/win10,hda,w' , 'file:/medi= a/install/Win10x64.iso,hdb:cdrom,r' ]
#device_model_version =3D '= ;qemu-xen-traditional'
boot=3D'dc'
#boot=3D'c'sdl=3D1
vnc=3D1
serial=3D'pty'
tsc_mode=3D"default&q= uot;
viridian=3D1
usb=3D1
usbdevice=3D'tablet'
gfx_pass= thru=3D0

pci=3D[ '01:00.0', '01:00.1' , '01:00.2= ' , '01:00.3' ]
localtime=3D1
xen_platform_pci=3D1
pci= _power_mgmt=3D1
stdvga =3D 0
serial =3D 'pty'
on_poweroff = =3D 'destroy'
on_reboot =C2=A0 =3D 'destroy'
on_crash= =C2=A0 =C2=A0=3D 'destroy'

device_model_args_hvm =3D [
= =C2=A0 # Debug OVMF
=C2=A0 '-chardev', 'file,id=3Ddebugcon,p= ath=3D/etc/xen/win10.log,',
=C2=A0 '-device', 'isa-debug= con,iobase=3D0x402,chardev=3Ddebugcon',
]

Before to create th= e guest,I run this script :

if [ $# -eq 0 ]; then
=C2=A0 =C2=A0 e= cho "Require PCI devices in format: =C2=A0<domain>:<bus>:&= lt;slot>.<function>"
=C2=A0 =C2=A0 echo "Eg: $(basena= me $0) 0000:00:1b.0"
=C2=A0 =C2=A0 exit 1
fi

modprobe xen= -pciback

for pcidev in $@; do
=C2=A0 =C2=A0 if [ -h /sys/bus/pci/= devices/"$pcidev"/driver ]; then
=C2=A0 =C2=A0 =C2=A0 =C2=A0 e= cho "Unbinding $pcidev from" $(basename $(readlink /sys/bus/pci/d= evices/"$pcidev"/driver))
=C2=A0 =C2=A0 =C2=A0 =C2=A0 echo -n = "$pcidev" > /sys/bus/pci/devices/"$pcidev"/driver/un= bind
=C2=A0 =C2=A0 fi
=C2=A0 =C2=A0 echo "Binding $pcidev to pci= back"
=C2=A0 =C2=A0 echo -n "$pcidev" > /sys/bus/pci/d= rivers/pciback/new_slot
=C2=A0 =C2=A0 echo -n "$pcidev" > /= sys/bus/pci/drivers/pciback/bind
done

for 4 times,like this :
=
root@ziomario-I9:/etc/xen# ./pciback-0000:01:00.0.sh 0000:01:00.0
Unbinding 0000:01:00.0 from nvidia
Binding = 0000:01:00.0 to pciback

root@ziomario-I9:/etc/xen# ./pciback-0000:01= :00.0.sh 0000:01:00.1
Unbinding 0000:01:0= 0.1 from snd_hda_intel
Binding 0000:01:00.1 to pciback

root@zioma= rio-I9:/etc/xen# ./pciback-0000:01:00.0.sh 0= 000:01:00.2
Unbinding 0000:01:00.2 from xhci_hcd
Binding 0000:01:00.2= to pciback

root@ziomario-I9:/etc/xen# ./pciback-0000:01:00.0.sh 0000:01:00.3
Unbinding 0000:01:00.3 from nvi= dia-gpu
Binding 0000:01:00.3 to pciback

it seems good,but It is n= ot,infact this is what happens when I create the guest :

libxl: erro= r: libxl_pci.c:1477:libxl__device_pci_reset: The kernel doesn't support= reset from sysfs for PCI device 0000:01:00.1
libxl: error: libxl_pci.c:= 1477:libxl__device_pci_reset: The kernel doesn't support reset from sys= fs for PCI device 0000:01:00.2
libxl: error: libxl_pci.c:1477:libxl__dev= ice_pci_reset: The kernel doesn't support reset from sysfs for PCI devi= ce 0000:01:00.3


I tried to pass only the first line,like this :<= br>

pci=3D[ '01:00.0' ]


the guest starts,but :

=C2=A0 =C2=A0 1) the resolution is black and white,640x480 and I c= an't increase it

=C2=A0 =C2=A0 2) the nvidia graphic card can= 9;t be installed,it says that it can't be installed on this computer
=C2=A0 =C2=A0 3) I see two microsoft basic display adapter,no cirrus g= raphic card.

3D"Schermata


ca= n u give me some suggestion ?
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[147.192.24.63]) by smtp.gmail.com with ESMTPSA id t73sm11048134pfc.78.2020.07.26.00.16.04 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 26 Jul 2020 00:16:05 -0700 (PDT) From: Bernd Bausch Subject: Newbie fails booting: "Xen is relinquishing VGA console" To: xen-users@lists.xenproject.org Message-ID: <625103f0-0f30-6fe1-1fc1-de597e8da7de@gmail.com> Date: Sun, 26 Jul 2020 16:16:04 +0900 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" I am following the instructions at https://wiki.xenproject.org/wiki/Xen_Project_Beginners_Guide, except that I am installing the latest Debian. The machine is a Lenovo Thinkpad E540 with ample memory (16GB). Trying to boot the Xen kernel, all I get is a dark screen. When I remove the "quiet" option from Grub's menu point, I see that the last message before blanking the screen is "Xen is relinquishing VGA console". There are various documents on the internet that contain this string, but I am a total newcomer to the world of Xen and don't understand them. It might have something to do with "booting into domU versus dom0". I don't have a domU defined at this point. I can boot into "normal" Debian without Xen. How can I proceed? Should I use a different document to bootstrap myself into Xen? Thanks in advance. From xen-users-bounces@lists.xenproject.org Sun Jul 26 07:56:05 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 26 Jul 2020 07:56:05 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzbVE-0005Ek-BZ; Sun, 26 Jul 2020 07:55:24 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzbVD-0005Ef-1G for xen-users@lists.xenproject.org; Sun, 26 Jul 2020 07:55:23 +0000 X-Inumbo-ID: 5a824224-cf15-11ea-a645-12813bfff9fa Received: from slackmx.nethence.com (unknown [212.83.171.255]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 5a824224-cf15-11ea-a645-12813bfff9fa; Sun, 26 Jul 2020 07:55:21 +0000 (UTC) Received: from [172.20.54.199] (219-54.szkti.ru [213.168.54.219]) by slackmx.nethence.com (Postfix) with ESMTPSA id 4BDvvM4kZ2z1y5H; Sun, 26 Jul 2020 10:38:55 +0300 (MSK) Subject: Re: Newbie fails booting: "Xen is relinquishing VGA console" To: Bernd Bausch , xen-users@lists.xenproject.org References: <625103f0-0f30-6fe1-1fc1-de597e8da7de@gmail.com> From: Pierre-Philipp Braun Message-ID: <980cf6f9-8373-aa6e-31ec-4c5a171d2d44@nethence.com> Date: Sun, 26 Jul 2020 10:39:11 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <625103f0-0f30-6fe1-1fc1-de597e8da7de@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" > Trying to boot the Xen kernel, all I get is a dark screen. When I remove > the "quiet" option from Grub's menu point, I see that the last message > before blanking the screen is "Xen is relinquishing VGA console". Is this EFI or legacy BIOS/CSM? I will assume legacy, much easier. Do you see the XEN booting but not the Linux kernel nor the system? You don't get a system prompt either? Maybe you just need to force output on VGA, in case it goes to serial port. xen.gz argument would be console=vga but you probably don't need that kernel argument try add console=tty0 but then you should have a prompt showing up anyways, unless systemD service mgetty now finds out by itself where to spit? (cray things happen nowadays) At this stage I think you need to play with booting, then will come XEN and domU guest tuning. I suggest you try PV and then switch to PVH with builder = "pvh". By the way you can even run the dom0 as PVH (as it is a privileged guest) but you absolutely need to define `dom0_mem` for that. /boot/xen.gz dom0=pvh dom0_mem=1024M,max:8192M loglvl=info noreboot=true From xen-users-bounces@lists.xenproject.org Sun Jul 26 15:49:51 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 26 Jul 2020 15:49:51 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzisk-0003Xj-EW; Sun, 26 Jul 2020 15:48:10 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzisj-0003Xe-1y for xen-users@lists.xenproject.org; Sun, 26 Jul 2020 15:48:09 +0000 X-Inumbo-ID: 656a0a72-cf57-11ea-8a3c-bc764e2007e4 Received: from mail-wr1-x443.google.com (unknown [2a00:1450:4864:20::443]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 656a0a72-cf57-11ea-8a3c-bc764e2007e4; Sun, 26 Jul 2020 15:48:06 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Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --000000000000be302e05ab5a21ba Content-Type: text/plain; charset="UTF-8" Hi All, We have a problem that is ongoing for more than 1 month We have several servers running xcp-ng and we are facing kernel oops that crash the server My skill is not enough to debug the issue So need someone to point me to the right direction the issue is not hardware related it occurred on servers that are of different processor , nic and even kernel version (all under 4.19) the stack trace looks like this [2399526.430672] ALERT: BUG: unable to handle kernel NULL pointer dereference at 0000000000000004 [2399526.430695] INFO: PGD 447268067 P4D 447268067 PUD 44775f067 PMD 0 [2399526.430710] WARN: Oops: 0000 [#1] SMP NOPTI [2399526.430720] WARN: CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tainted 4.19.108 #1 [2399526.430728] WARN: Hardware name: HP ProLiant SL230s Gen8 /, BIOS P75 05/24/2019 [2399526.430745] WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140 [2399526.430753] WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8b 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 88 d0 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 0a f0 ff [2399526.430773] WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010246 [2399526.430780] WARN: RAX: ffff88842087b900 RBX: 0000000000000001 RCX: 0000000000000000 [2399526.430789] WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 RDI: ffff8883de0b9c00 [2399526.430801] WARN: RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020 [2399526.430811] WARN: R10: 0000000000000000 R11: ffff8883de0b9d40 R12: 0000000000000001 [2399526.430823] WARN: R13: ffff8883db210a00 R14: 0000000000000002 R15: ffff8883de0b9c00 [2399526.430852] WARN: FS: 00007ffac43fe700(0000) GS:ffff888451240000(0000) knlGS:0000000000000000 [2399526.430868] WARN: CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 [2399526.430879] WARN: CR2: 0000000000000004 CR3: 000000044ad58000 CR4: 0000000000040660 [2399526.430899] WARN: Call Trace: [2399526.430914] WARN: __qdisc_run+0xa2/0x4f0 [2399526.430928] WARN: ? __switch_to_asm+0x41/0x70 [2399526.430940] WARN: net_tx_action+0x148/0x230 [2399526.430949] WARN: __do_softirq+0xd1/0x28c [2399526.430966] WARN: run_ksoftirqd+0x26/0x40 [2399526.430980] WARN: smpboot_thread_fn+0x10e/0x160 [2399526.430993] WARN: kthread+0xf8/0x130 [2399526.431004] WARN: ? sort_range+0x20/0x20 [2399526.431010] WARN: ? kthread_bind+0x10/0x10 [2399526.431017] WARN: ret_from_fork+0x35/0x40 [2399526.431027] WARN: Modules linked in: act_police cls_basic sch_ingress sch_tbf tun rpcsec_gss_krb5 auth_rpcgss oid_registry nfsv4 nfs lockd grace fscache bnx2fc cnic uio fcoe libfcoe libfc scsi_transport_fc openvswitch nsh nf_nat_ipv6 nf_nat_ipv4 nf_conncount nf_nat 8021q garp mrp stp llc ipt_REJECT nf_reject_ipv4 dm_multipath xt_tcpudp xt_multiport xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter sunrpc hid_generic sb_edac intel_powerclamp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc dm_mod aesni_intel aes_x86_64 crypto_simd cryptd glue_helper intel_rapl_perf psmouse lpc_ich usbhid hid sg hpilo ipmi_si ipmi_devintf ipmi_msghandler acpi_power_meter ip_tables x_tables raid1 md_mod sd_mod serio_raw uhci_hcd ahci libahci igb libata ehci_pci ehci_hcd bnx2x mdio libcrc32c mpt3sas [2399526.431154] WARN: raid_class scsi_transport_sas scsi_dh_rdac scsi_dh_hp_sw scsi_dh_emc scsi_dh_alua scsi_mod ipv6 crc_ccitt [2399526.431177] WARN: CR2: 0000000000000004 [2399526.431189] WARN: ---[ end trace 32a268c3653eb10c ]--- [2399526.431201] WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140 [2399526.431212] WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8b 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 88 d0 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 0a f0 ff [2399526.431238] WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010246 [2399526.431247] WARN: RAX: ffff88842087b900 RBX: 0000000000000001 RCX: 0000000000000000 [2399526.431260] WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 RDI: ffff8883de0b9c00 [2399526.431270] WARN: RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020 [2399526.431280] WARN: R10: 0000000000000000 R11: ffff8883de0b9d40 R12: 0000000000000001 [2399526.431289] WARN: R13: ffff8883db210a00 R14: 0000000000000002 R15: ffff8883de0b9c00 [2399526.431307] WARN: FS: 00007ffac43fe700(0000) GS:ffff888451240000(0000) knlGS:0000000000000000 [2399526.431319] WARN: CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 [2399526.431331] WARN: CR2: 0000000000000004 CR3: 000000044ad58000 CR4: 0000000000040660 [2399526.431355] EMERG: Kernel panic - not syncing: Fatal exception in interrupt xen crash analyzer generate many other files as well dmesg.kexec.log dom0.log ( for each dom ) dom0.structures.log for each dom ( for each dom ) .... lspci-tv.out lspci-vv.out lspci-vvxxxx.out readelf-Wl.out readelf-Wn.out time-v.out xen.log xen.pcpu0.stack.log ( for each pcpu) ... xen-crashdump-analyser.log the log can be seen from xenlog file as Call Trace: [ffffffff810014aa] xen_hypercall_kexec_op+0xa/0x20 ffffffff81071f85 panic+0x111/0x27c ffffffff81027a7f oops_end+0xcf/0xd0 ffffffff8105da63 no_context+0x1b3/0x3c0 ffffffff816c0223 inet_gro_receive+0x213/0x2b0 ffffffff8105e32a __do_page_fault+0xaa/0x4f0 ffffffff8162cd44 netif_receive_skb_internal+0x34/0xe0 ffffffff81800f6e page_fault+0x1e/0x30 ffffffff81663ac9 pfifo_fast_dequeue+0xc9/0x140 ffffffff81663f38 __qdisc_run+0xa8/0x4e0 ffffffff816290c8 net_tx_action+0x148/0x220 ffffffff81a000d1 __softirqentry_text_start+0xd1/0x28c ffffffff81077ff6 run_ksoftirqd+0x26/0x40 ffffffff8109763e smpboot_thread_fn+0x10e/0x160 ffffffff81093b68 kthread+0xf8/0x130 ffffffff81097530 smpboot_thread_fn+0/0x160 ffffffff81093a70 kthread+0/0x130 ffffffff81800215 ret_from_fork+0x35/0x40 I did use a tool to trace the source code where the issue occure ./decode_stacktrace.sh /usr/lib/debug/lib/modules/4.19.108/vmlinux /usr/lib/debug/lib/modules/4.19.108/ < ./trace2 > out3 and this is the output [ffffffff810014aa] xen_hypercall_kexec_op (arch/x86/kernel/.tmp_head_64.o:?) ffffffff81071f85 panic (/usr/src/debug/kernel-4.19.19/kernel/panic.c:209) ffffffff81027a7f oops_end (/usr/src/debug/kernel-4.19.19/arch/x86/kernel/dumpstack.c:352) ffffffff8105da63 no_context (/usr/src/debug/kernel-4.19.19/arch/x86/mm/fault.c:808) ffffffff816c0223 inet_gro_receive (/usr/src/debug/kernel-4.19.19/include/linux/skbuff.h:2350 /usr/src/debug/kernel-4.19.19/net/ipv4/af_inet.c:1495) ffffffff8105e32a __do_page_fault (/usr/src/debug/kernel-4.19.19/arch/x86/mm/fault.c:1435) ffffffff8162cd44 netif_receive_skb_internal (/usr/src/debug/kernel-4.19.19/net/core/dev.c:5152) ffffffff81800f6e page_fault (/usr/src/debug////////kernel-4.19.19/arch/x86/entry/entry_64.S:1204) ffffffff81663ac9 pfifo_fast_dequeue (/usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:723 /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:740 /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:747 /usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:677) ffffffff81663f38 __qdisc_run (/usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:283 /usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:385 /usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:403) ffffffff816290c8 net_tx_action (/usr/src/debug/kernel-4.19.19/include/linux/seqlock.h:235 /usr/src/debug/kernel-4.19.19/include/linux/seqlock.h:388 /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:145 /usr/src/debug/kernel-4.19.19/include/net/pkt_sched.h:121 /usr/src/debug/kernel-4.19.19/net/core/dev.c:4595) ffffffff81a000d1 __softirqentry_text_start (/usr/src/debug/kernel-4.19.19/kernel/softirq.c:292 /usr/src/debug/kernel-4.19.19/include/linux/jump_label.h:138 /usr/src/debug/kernel-4.19.19/include/trace/events/irq.h:142 /usr/src/debug/kernel-4.19.19/kernel/softirq.c:293) ffffffff81077ff6 run_ksoftirqd (/usr/src/debug/kernel-4.19.19/arch/x86/include/asm/paravirt.h:799 /usr/src/debug/kernel-4.19.19/kernel/softirq.c:654) ffffffff8109763e smpboot_thread_fn (/usr/src/debug/kernel-4.19.19/kernel/smpboot.c:164) ffffffff81093b68 kthread (/usr/src/debug/kernel-4.19.19/kernel/kthread.c:246) ffffffff81097530 smpboot_thread_fn+0/0x160 ffffffff81093a70 kthread+0/0x130 ffffffff81800215 ret_from_fork (/usr/src/debug////////kernel-4.19.19/arch/x86/entry/entry_64.S:421) based on that the issue occurred when calling _bstats_update (&bstats ->bstats , bytes , packets ); thats as far as i can reach not sure how to debug further to find the root cause and fix it --000000000000be302e05ab5a21ba Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi All,
We have a problem that is ongoing for more tha= n 1 month

We have several servers running xcp-ng a= nd we are facing kernel=C2=A0oops that crash the server

My skill is not enough to debug=C2=A0the issue So need someone to poi= nt me to the right direction
the issue is not hardware related
it occurred=C2=A0on servers that are of different=C2=A0processor , = nic and even kernel version (all under 4.19)

the s= tack trace looks like this

[2399526.430672] =C2=A0= ALERT: BUG: unable to handle kernel NULL pointer dereference at 00000000000= 00004
[2399526.430695] =C2=A0 INFO: PGD 447268067 P4D 447268067 PUD 4477= 5f067 PMD 0
[2399526.430710] =C2=A0 WARN: Oops: 0000 [#1] SMP NOPTI
= [2399526.430720] =C2=A0 WARN: CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tainted = 4.19.108 #1
[2399526.430728] =C2=A0 WARN: Hardware name: HP ProLiant SL2= 30s Gen8 =C2=A0 /, BIOS P75 05/24/2019
[2399526.430745] =C2=A0 WARN: RIP= : e030:pfifo_fast_dequeue+0xc9/0x140
[2399526.430753] =C2=A0 WARN: Code:= 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8b 57 50 65 48 03 15 11 64 99 7e 8b= 88 cc 00 00 00 be 01 00 00 00 48 03 88 d0 00 00 00 <66> 83 79 04 00 = 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 0a f0 ff
[2399526.430773] =C2= =A0 WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010246
[2399526.430780] = =C2=A0 WARN: RAX: ffff88842087b900 RBX: 0000000000000001 RCX: 0000000000000= 000
[2399526.430789] =C2=A0 WARN: RDX: ffffe8fffee60a1c RSI: 00000000000= 00001 RDI: ffff8883de0b9c00
[2399526.430801] =C2=A0 WARN: RBP: 000000000= 0000000 R08: 0000000000000000 R09: 0000000000000020
[2399526.430811] =C2= =A0 WARN: R10: 0000000000000000 R11: ffff8883de0b9d40 R12: 0000000000000001=
[2399526.430823] =C2=A0 WARN: R13: ffff8883db210a00 R14: 00000000000000= 02 R15: ffff8883de0b9c00
[2399526.430852] =C2=A0 WARN: FS: =C2=A000007ff= ac43fe700(0000) GS:ffff888451240000(0000) knlGS:0000000000000000
[239952= 6.430868] =C2=A0 WARN: CS: =C2=A0e033 DS: 0000 ES: 0000 CR0: 00000000800500= 33
[2399526.430879] =C2=A0 WARN: CR2: 0000000000000004 CR3: 000000044ad5= 8000 CR4: 0000000000040660
[2399526.430899] =C2=A0 WARN: Call Trace:
= [2399526.430914] =C2=A0 WARN: =C2=A0__qdisc_run+0xa2/0x4f0
[2399526.4309= 28] =C2=A0 WARN: =C2=A0? __switch_to_asm+0x41/0x70
[2399526.430940] =C2= =A0 WARN: =C2=A0net_tx_action+0x148/0x230
[2399526.430949] =C2=A0 WARN: = =C2=A0__do_softirq+0xd1/0x28c
[2399526.430966] =C2=A0 WARN: =C2=A0run_ks= oftirqd+0x26/0x40
[2399526.430980] =C2=A0 WARN: =C2=A0smpboot_thread_fn+= 0x10e/0x160
[2399526.430993] =C2=A0 WARN: =C2=A0kthread+0xf8/0x130
[2= 399526.431004] =C2=A0 WARN: =C2=A0? sort_range+0x20/0x20
[2399526.431010= ] =C2=A0 WARN: =C2=A0? kthread_bind+0x10/0x10
[2399526.431017] =C2=A0 WA= RN: =C2=A0ret_from_fork+0x35/0x40
[2399526.431027] =C2=A0 WARN: Modules = linked in: act_police cls_basic sch_ingress sch_tbf tun rpcsec_gss_krb5 aut= h_rpcgss oid_registry nfsv4 nfs lockd grace fscache bnx2fc cnic uio fcoe li= bfcoe libfc scsi_transport_fc openvswitch nsh nf_nat_ipv6 nf_nat_ipv4 nf_co= nncount nf_nat 8021q garp mrp stp llc ipt_REJECT nf_reject_ipv4 dm_multipat= h xt_tcpudp xt_multiport xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag= _ipv4 iptable_filter sunrpc hid_generic sb_edac intel_powerclamp crct10dif_= pclmul crc32_pclmul ghash_clmulni_intel pcbc dm_mod aesni_intel aes_x86_64 = crypto_simd cryptd glue_helper intel_rapl_perf psmouse lpc_ich usbhid hid s= g hpilo ipmi_si ipmi_devintf ipmi_msghandler acpi_power_meter ip_tables x_t= ables raid1 md_mod sd_mod serio_raw uhci_hcd ahci libahci igb libata ehci_p= ci ehci_hcd bnx2x mdio libcrc32c mpt3sas
[2399526.431154] =C2=A0 WARN: = =C2=A0raid_class scsi_transport_sas scsi_dh_rdac scsi_dh_hp_sw scsi_dh_emc = scsi_dh_alua scsi_mod ipv6 crc_ccitt
[2399526.431177] =C2=A0 WARN: CR2: = 0000000000000004
[2399526.431189] =C2=A0 WARN: ---[ end trace 32a268c365= 3eb10c ]---
[2399526.431201] =C2=A0 WARN: RIP: e030:pfifo_fast_dequeue+0= xc9/0x140
[2399526.431212] =C2=A0 WARN: Code: 50 28 48 8b 4f 58 f7 da 65= 01 51 04 48 8b 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00= 00 48 03 88 d0 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 = 01 72 08 48 01 0a f0 ff
[2399526.431238] =C2=A0 WARN: RSP: e02b:ffffc900= 400c3de0 EFLAGS: 00010246
[2399526.431247] =C2=A0 WARN: RAX: ffff8884208= 7b900 RBX: 0000000000000001 RCX: 0000000000000000
[2399526.431260] =C2= =A0 WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 RDI: ffff8883de0b9c00=
[2399526.431270] =C2=A0 WARN: RBP: 0000000000000000 R08: 00000000000000= 00 R09: 0000000000000020
[2399526.431280] =C2=A0 WARN: R10: 000000000000= 0000 R11: ffff8883de0b9d40 R12: 0000000000000001
[2399526.431289] =C2=A0= WARN: R13: ffff8883db210a00 R14: 0000000000000002 R15: ffff8883de0b9c00[2399526.431307] =C2=A0 WARN: FS: =C2=A000007ffac43fe700(0000) GS:ffff8884= 51240000(0000) knlGS:0000000000000000
[2399526.431319] =C2=A0 WARN: CS: = =C2=A0e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[2399526.431331] =C2= =A0 WARN: CR2: 0000000000000004 CR3: 000000044ad58000 CR4: 0000000000040660=
[2399526.431355] =C2=A0EMERG: Kernel panic - not syncing: Fatal excepti= on in interrupt


xen crash analy= zer generate many other files as well
dmesg.kexec.log
dom0.log= ( for each dom )
dom0.structures.log=C2=A0 for each dom ( for each dom )
....
lspci-tv.out
lspci-vv.out
lspci-vvxx= xx.out
readelf-Wl.out
readelf-Wn.out
time-v.out
xen.log
xen.= pcpu0.stack.log ( for each pcpu)=C2=A0
...
xen-crashdump-analyser.log
<= div>
the log can be seen from xenlog=C2=A0file as=C2=A0
=
=C2=A0Call Trace:
[ffffffff810014aa] xen_hypercall_kexec_op+0xa/0= x20
=C2=A0ffffffff81071f85 =C2=A0panic+0x111/0x27c
=C2=A0ffffffff= 81027a7f =C2=A0oops_end+0xcf/0xd0
=C2=A0ffffffff8105da63 =C2=A0no_cont= ext+0x1b3/0x3c0
=C2=A0ffffffff816c0223 =C2=A0inet_gro_receive+0x213/0x= 2b0
=C2=A0ffffffff8105e32a =C2=A0__do_page_fault+0xaa/0x4f0
=C2= =A0ffffffff8162cd44 =C2=A0netif_receive_skb_internal+0x34/0xe0
=C2=A0f= fffffff81800f6e =C2=A0page_fault+0x1e/0x30
=C2=A0ffffffff81663ac9 =C2= =A0pfifo_fast_dequeue+0xc9/0x140
=C2=A0ffffffff81663f38 =C2=A0__qdisc_= run+0xa8/0x4e0
=C2=A0ffffffff816290c8 =C2=A0net_tx_action+0x148/0x220<= br> =C2=A0ffffffff81a000d1 =C2=A0__softirqentry_text_start+0xd1/0x28c
= =C2=A0ffffffff81077ff6 =C2=A0run_ksoftirqd+0x26/0x40
=C2=A0ffffffff81= 09763e =C2=A0smpboot_thread_fn+0x10e/0x160
=C2=A0ffffffff81093b68 =C2= =A0kthread+0xf8/0x130
=C2=A0ffffffff81097530 =C2=A0smpboot_thread_fn+0= /0x160
=C2=A0ffffffff81093a70 =C2=A0kthread+0/0x130
=C2=A0fffffff= f81800215 =C2=A0ret_from_fork+0x35/0x40

I did = use a tool to trace the source code where the issue occure
./deco= de_stacktrace.sh /usr/lib/debug/lib/modules/4.19.108/vmlinux /usr/lib/debug= /lib/modules/4.19.108/ < ./trace2 > out3

and this is the output

[ffffffff810014aa] xen_hyp= ercall_kexec_op (arch/x86/kernel/.tmp_head_64.o:?)
ffffffff81071f85 pani= c (/usr/src/debug/kernel-4.19.19/kernel/panic.c:209)
ffffffff81027a7f oo= ps_end (/usr/src/debug/kernel-4.19.19/arch/x86/kernel/dumpstack.c:352)
f= fffffff8105da63 no_context (/usr/src/debug/kernel-4.19.19/arch/x86/mm/fault= .c:808)
ffffffff816c0223 inet_gro_receive (/usr/src/debug/kernel-4.19.19= /include/linux/skbuff.h:2350 /usr/src/debug/kernel-4.19.19/net/ipv4/af_inet= .c:1495)
ffffffff8105e32a __do_page_fault (/usr/src/debug/kernel-4.19.19= /arch/x86/mm/fault.c:1435)
ffffffff8162cd44 netif_receive_skb_internal (= /usr/src/debug/kernel-4.19.19/net/core/dev.c:5152)
ffffffff81800f6e page= _fault (/usr/src/debug////////kernel-4.19.19/arch/x86/entry/entry_64.S:1204= )
ffffffff81663ac9 pfifo_fast_dequeue (/usr/src/debug/kernel-4.19.19/inc= lude/net/sch_generic.h:723 /usr/src/debug/kernel-4.19.19/include/net/sch_ge= neric.h:740 /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:747 /us= r/src/debug/kernel-4.19.19/net/sched/sch_generic.c:677)
ffffffff81663f38= __qdisc_run (/usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:283 /us= r/src/debug/kernel-4.19.19/net/sched/sch_generic.c:385 /usr/src/debug/kerne= l-4.19.19/net/sched/sch_generic.c:403)
ffffffff816290c8 net_tx_action (/= usr/src/debug/kernel-4.19.19/include/linux/seqlock.h:235 /usr/src/debug/ker= nel-4.19.19/include/linux/seqlock.h:388 /usr/src/debug/kernel-4.19.19/inclu= de/net/sch_generic.h:145 /usr/src/debug/kernel-4.19.19/include/net/pkt_sche= d.h:121 /usr/src/debug/kernel-4.19.19/net/core/dev.c:4595)
ffffffff81a00= 0d1 __softirqentry_text_start (/usr/src/debug/kernel-4.19.19/kernel/softirq= .c:292 /usr/src/debug/kernel-4.19.19/include/linux/jump_label.h:138 /usr/sr= c/debug/kernel-4.19.19/include/trace/events/irq.h:142 /usr/src/debug/kernel= -4.19.19/kernel/softirq.c:293)
ffffffff81077ff6 run_ksoftirqd (/usr/src/= debug/kernel-4.19.19/arch/x86/include/asm/paravirt.h:799 /usr/src/debug/ker= nel-4.19.19/kernel/softirq.c:654)
ffffffff8109763e smpboot_thread_fn (/u= sr/src/debug/kernel-4.19.19/kernel/smpboot.c:164)
ffffffff81093b68 kthre= ad (/usr/src/debug/kernel-4.19.19/kernel/kthread.c:246)
ffffffff81097530= =C2=A0smpboot_thread_fn+0/0x160
ffffffff81093a70 =C2=A0kthread+0/0x130<= br>ffffffff81800215 ret_from_fork (/usr/src/debug////////kernel-4.19.19/arc= h/x86/entry/entry_64.S:421)

based on that the = issue occurred when calling=C2=A0
_bst= ats_update(&bstats-= >bstats, bytes, packets);

thats as far as i can= reach not sure how to debug further to find the root cause and fix it=C2= =A0


--000000000000be302e05ab5a21ba-- From xen-users-bounces@lists.xenproject.org Sun Jul 26 17:05:39 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 26 Jul 2020 17:05:39 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzk4e-0002VT-KL; Sun, 26 Jul 2020 17:04:32 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzk4d-0002VO-9o for xen-users@lists.xenproject.org; Sun, 26 Jul 2020 17:04:31 +0000 X-Inumbo-ID: 11611a3c-cf62-11ea-8a4e-bc764e2007e4 Received: from mail-vs1-xe30.google.com (unknown [2607:f8b0:4864:20::e30]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 11611a3c-cf62-11ea-8a4e-bc764e2007e4; Sun, 26 Jul 2020 17:04:29 +0000 (UTC) Received: by mail-vs1-xe30.google.com with SMTP id k7so7127289vso.2 for ; Sun, 26 Jul 2020 10:04:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to:cc; bh=MSUgjY06gBHvctDdhrWILfTZZ51HBzNiG+uWH5zVlSo=; b=BtLVhuxJqwLRsr+RxF7ku78iC+xuMK2iG3muwH68pTlq4f8ES3Bj3URtuP4pn24kUi fYhpOonLdNq5X8ff+tV4/kUZWWiPsDm3xkZoYx61SXAH06vrqSZim8g5aSBDkBl1o937 r09jGyAg/sce0ORWbzaeyausTomrJNptNWvghfR0mYhnXUILwmFG3lteeJd6aJp0p96K RqqZ+RCU9fWapobLnUOLAtx4/mnWNRDQn/DNm63l6h/HxdvsOhTUeIGCEpl81uZNoN3u cxvicOEZwWZ532srl+epzYQ54J4g3WlojluWk+BOA/f1jWhlSEJxvq0AtjNMqycusWQ4 7Qlw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:reply-to :from:date:message-id:subject:to:cc; bh=MSUgjY06gBHvctDdhrWILfTZZ51HBzNiG+uWH5zVlSo=; b=apk+SOXxZ1KdAqh9fHhc+x/1HMhhovzYdLdlwokjK0I/JCOqkgcPMT62T5eKAU5am2 kamHZUjLRJ51wVI50V2OF1q8d4klDTcvvLUmo81d8MfL4M12//g6O+mCYlfrLGZHUse+ XXGtw/GY1IC9crUuw6ePCTnwmlHqVX/01r15fjppKSTSKp7cdkoOTSTgDSZhbsgc5ZY3 mZkFEpGs6Ao8yD0vRoZALNQ46+53V2vhI2cFQvWWcfM/t9ftf4JXV2i1Nc5OXYCtiNeF WB3pOety5U6gQhieQ0xkoYh9pgi3j/V3RBj3VercXumhgu/3hVcbdZI9P45/2EYozO2S 9OPg== X-Gm-Message-State: AOAM530x93+xRYbMaPWpRfcHJzffJvHKwiHhU8yEJ+l85iVGRk/1NR5Y aLLPj6FYS6Skq6OaDIflOPY2KX0/WGTiXL3qDB4= X-Google-Smtp-Source: ABdhPJzsKJvcmRT7hBb3JAbzvxeVlT5e6DMNAX69GgWJoRAjEsMhyFT5SmTIRjNwaq4tIMpsXiNClhAg1hFaKKhYfQs= X-Received: by 2002:a67:8bc4:: with SMTP id n187mr13982448vsd.112.1595783068733; Sun, 26 Jul 2020 10:04:28 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Rob Townley Date: Sun, 26 Jul 2020 11:04:17 -0600 Message-ID: Subject: Re: repeated Kernel oops need help to debug To: moftah moftah Content-Type: multipart/alternative; boundary="000000000000f356db05ab5b3241" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: Rob.Townley@gmail.com Cc: xen-users@lists.xenproject.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --000000000000f356db05ab5b3241 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable We have had crashes on one machine. Do not have details because i do not have broadband now. Somethings that stuck out to me. Inability to sync would make me wonder if filesystem issue. Also wondering if you installed the netdata package since some of the errors seem to be related to statistics? Our crashes happened after installing netdata but crashes are only occurring on one machine. Hypothesis: netdata needs to read and write filesystem more which has exposed filesystem corruption. What fs is it? extX or LVM/extX or ? Read out the fs metadata and fs check confuguration with: tune2fs -l /dev/sdaX Replace X with 0, 1, 2 ... whatever you may have. Then triple check these parameters as i am far from from fast internet at the moment. I have done the following tons of times on normal Linux machines, but not so much with xen kernel. Is Dom-0 VM fs the same as underlying kernel? But set fs check interval and mount count with: =E2=80=98tune2fs -i 1d /dev/sdaX=E2=80=99 =E2=80=98tune2fs -c 1 /dev/sdaX=E2=80=99 =E2=80=98e2fsck -c -c -C0 -D /dev/sdaX=E2=80=98 can be used to check for both read and write, output to stdout, and optimize layout, directory structure, and so on. But this would require booting from install ISO or qlive media. On Sun, Jul 26, 2020 at 9:51 AM moftah moftah wrote: > Hi All, > We have a problem that is ongoing for more than 1 month > > We have several servers running xcp-ng and we are facing kernel oops that > crash the server > > My skill is not enough to debug the issue So need someone to point me to > the right direction > the issue is not hardware related > it occurred on servers that are of different processor , nic and even > kernel version (all under 4.19) > > the stack trace looks like this > > [2399526.430672] ALERT: BUG: unable to handle kernel NULL pointer > dereference at 0000000000000004 > [2399526.430695] INFO: PGD 447268067 P4D 447268067 PUD 44775f067 PMD 0 > [2399526.430710] WARN: Oops: 0000 [#1] SMP NOPTI > [2399526.430720] WARN: CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tainted > 4.19.108 #1 > [2399526.430728] WARN: Hardware name: HP ProLiant SL230s Gen8 /, BIOS > P75 05/24/2019 > [2399526.430745] WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140 > [2399526.430753] WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8b > 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 88 d= 0 > 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 0a f0= ff > [2399526.430773] WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010246 > [2399526.430780] WARN: RAX: ffff88842087b900 RBX: 0000000000000001 RCX: > 0000000000000000 > [2399526.430789] WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 RDI: > ffff8883de0b9c00 > [2399526.430801] WARN: RBP: 0000000000000000 R08: 0000000000000000 R09: > 0000000000000020 > [2399526.430811] WARN: R10: 0000000000000000 R11: ffff8883de0b9d40 R12: > 0000000000000001 > [2399526.430823] WARN: R13: ffff8883db210a00 R14: 0000000000000002 R15: > ffff8883de0b9c00 > [2399526.430852] WARN: FS: 00007ffac43fe700(0000) > GS:ffff888451240000(0000) knlGS:0000000000000000 > [2399526.430868] WARN: CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003= 3 > [2399526.430879] WARN: CR2: 0000000000000004 CR3: 000000044ad58000 CR4: > 0000000000040660 > [2399526.430899] WARN: Call Trace: > [2399526.430914] WARN: __qdisc_run+0xa2/0x4f0 > [2399526.430928] WARN: ? __switch_to_asm+0x41/0x70 > [2399526.430940] WARN: net_tx_action+0x148/0x230 > [2399526.430949] WARN: __do_softirq+0xd1/0x28c > [2399526.430966] WARN: run_ksoftirqd+0x26/0x40 > [2399526.430980] WARN: smpboot_thread_fn+0x10e/0x160 > [2399526.430993] WARN: kthread+0xf8/0x130 > [2399526.431004] WARN: ? sort_range+0x20/0x20 > [2399526.431010] WARN: ? kthread_bind+0x10/0x10 > [2399526.431017] WARN: ret_from_fork+0x35/0x40 > [2399526.431027] WARN: Modules linked in: act_police cls_basic > sch_ingress sch_tbf tun rpcsec_gss_krb5 auth_rpcgss oid_registry nfsv4 nf= s > lockd grace fscache bnx2fc cnic uio fcoe libfcoe libfc scsi_transport_fc > openvswitch nsh nf_nat_ipv6 nf_nat_ipv4 nf_conncount nf_nat 8021q garp mr= p > stp llc ipt_REJECT nf_reject_ipv4 dm_multipath xt_tcpudp xt_multiport > xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter > sunrpc hid_generic sb_edac intel_powerclamp crct10dif_pclmul crc32_pclmul > ghash_clmulni_intel pcbc dm_mod aesni_intel aes_x86_64 crypto_simd cryptd > glue_helper intel_rapl_perf psmouse lpc_ich usbhid hid sg hpilo ipmi_si > ipmi_devintf ipmi_msghandler acpi_power_meter ip_tables x_tables raid1 > md_mod sd_mod serio_raw uhci_hcd ahci libahci igb libata ehci_pci ehci_hc= d > bnx2x mdio libcrc32c mpt3sas > [2399526.431154] WARN: raid_class scsi_transport_sas scsi_dh_rdac > scsi_dh_hp_sw scsi_dh_emc scsi_dh_alua scsi_mod ipv6 crc_ccitt > [2399526.431177] WARN: CR2: 0000000000000004 > [2399526.431189] WARN: ---[ end trace 32a268c3653eb10c ]--- > [2399526.431201] WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140 > [2399526.431212] WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8b > 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 88 d= 0 > 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 0a f0= ff > [2399526.431238] WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010246 > [2399526.431247] WARN: RAX: ffff88842087b900 RBX: 0000000000000001 RCX: > 0000000000000000 > [2399526.431260] WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 RDI: > ffff8883de0b9c00 > [2399526.431270] WARN: RBP: 0000000000000000 R08: 0000000000000000 R09: > 0000000000000020 > [2399526.431280] WARN: R10: 0000000000000000 R11: ffff8883de0b9d40 R12: > 0000000000000001 > [2399526.431289] WARN: R13: ffff8883db210a00 R14: 0000000000000002 R15: > ffff8883de0b9c00 > [2399526.431307] WARN: FS: 00007ffac43fe700(0000) > GS:ffff888451240000(0000) knlGS:0000000000000000 > [2399526.431319] WARN: CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003= 3 > [2399526.431331] WARN: CR2: 0000000000000004 CR3: 000000044ad58000 CR4: > 0000000000040660 > [2399526.431355] EMERG: Kernel panic - not syncing: Fatal exception in > interrupt > > > xen crash analyzer generate many other files as well > dmesg.kexec.log > dom0.log ( for each dom ) > dom0.structures.log for each dom ( for each dom ) > .... > lspci-tv.out > lspci-vv.out > lspci-vvxxxx.out > readelf-Wl.out > readelf-Wn.out > time-v.out > xen.log > xen.pcpu0.stack.log ( for each pcpu) > ... > xen-crashdump-analyser.log > > the log can be seen from xenlog file as > Call Trace: > [ffffffff810014aa] xen_hypercall_kexec_op+0xa/0x20 > ffffffff81071f85 panic+0x111/0x27c > ffffffff81027a7f oops_end+0xcf/0xd0 > ffffffff8105da63 no_context+0x1b3/0x3c0 > ffffffff816c0223 inet_gro_receive+0x213/0x2b0 > ffffffff8105e32a __do_page_fault+0xaa/0x4f0 > ffffffff8162cd44 netif_receive_skb_internal+0x34/0xe0 > ffffffff81800f6e page_fault+0x1e/0x30 > ffffffff81663ac9 pfifo_fast_dequeue+0xc9/0x140 > ffffffff81663f38 __qdisc_run+0xa8/0x4e0 > ffffffff816290c8 net_tx_action+0x148/0x220 > ffffffff81a000d1 __softirqentry_text_start+0xd1/0x28c > ffffffff81077ff6 run_ksoftirqd+0x26/0x40 > ffffffff8109763e smpboot_thread_fn+0x10e/0x160 > ffffffff81093b68 kthread+0xf8/0x130 > ffffffff81097530 smpboot_thread_fn+0/0x160 > ffffffff81093a70 kthread+0/0x130 > ffffffff81800215 ret_from_fork+0x35/0x40 > > I did use a tool to trace the source code where the issue occure > ./decode_stacktrace.sh /usr/lib/debug/lib/modules/4.19.108/vmlinux > /usr/lib/debug/lib/modules/4.19.108/ < ./trace2 > out3 > > and this is the output > > [ffffffff810014aa] xen_hypercall_kexec_op > (arch/x86/kernel/.tmp_head_64.o:?) > ffffffff81071f85 panic (/usr/src/debug/kernel-4.19.19/kernel/panic.c:209) > ffffffff81027a7f oops_end > (/usr/src/debug/kernel-4.19.19/arch/x86/kernel/dumpstack.c:352) > ffffffff8105da63 no_context > (/usr/src/debug/kernel-4.19.19/arch/x86/mm/fault.c:808) > ffffffff816c0223 inet_gro_receive > (/usr/src/debug/kernel-4.19.19/include/linux/skbuff.h:2350 > /usr/src/debug/kernel-4.19.19/net/ipv4/af_inet.c:1495) > ffffffff8105e32a __do_page_fault > (/usr/src/debug/kernel-4.19.19/arch/x86/mm/fault.c:1435) > ffffffff8162cd44 netif_receive_skb_internal > (/usr/src/debug/kernel-4.19.19/net/core/dev.c:5152) > ffffffff81800f6e page_fault > (/usr/src/debug////////kernel-4.19.19/arch/x86/entry/entry_64.S:1204) > ffffffff81663ac9 pfifo_fast_dequeue > (/usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:723 > /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:740 > /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:747 > /usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:677) > ffffffff81663f38 __qdisc_run > (/usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:283 > /usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:385 > /usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:403) > ffffffff816290c8 net_tx_action > (/usr/src/debug/kernel-4.19.19/include/linux/seqlock.h:235 > /usr/src/debug/kernel-4.19.19/include/linux/seqlock.h:388 > /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:145 > /usr/src/debug/kernel-4.19.19/include/net/pkt_sched.h:121 > /usr/src/debug/kernel-4.19.19/net/core/dev.c:4595) > ffffffff81a000d1 __softirqentry_text_start > (/usr/src/debug/kernel-4.19.19/kernel/softirq.c:292 > /usr/src/debug/kernel-4.19.19/include/linux/jump_label.h:138 > /usr/src/debug/kernel-4.19.19/include/trace/events/irq.h:142 > /usr/src/debug/kernel-4.19.19/kernel/softirq.c:293) > ffffffff81077ff6 run_ksoftirqd > (/usr/src/debug/kernel-4.19.19/arch/x86/include/asm/paravirt.h:799 > /usr/src/debug/kernel-4.19.19/kernel/softirq.c:654) > ffffffff8109763e smpboot_thread_fn > (/usr/src/debug/kernel-4.19.19/kernel/smpboot.c:164) > ffffffff81093b68 kthread > (/usr/src/debug/kernel-4.19.19/kernel/kthread.c:246) > ffffffff81097530 smpboot_thread_fn+0/0x160 > ffffffff81093a70 kthread+0/0x130 > ffffffff81800215 ret_from_fork > (/usr/src/debug////////kernel-4.19.19/arch/x86/entry/entry_64.S:421) > > based on that the issue occurred when calling > _bstats_update > (& > bstats ->bstat= s > , bytes > , packets > ); > > thats as far as i can reach not sure how to debug further to find the roo= t > cause and fix it > > > --000000000000f356db05ab5b3241 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
We have had crashes on one machine.=C2=A0 = Do not have details because i do not have broadband now. =C2=A0
=

Somethings that stuck out to = me.
Inability to sync would make me wonder if filesy= stem issue. =C2=A0
Also wondering if you installed t= he netdata package since some of the errors seem to be related to statistic= s?=C2=A0 Our crashes happened after installing netdata but crashes are only= occurring on one machine. =C2=A0 =C2=A0=C2=A0

<= /div>
Hypothesis: =C2=A0netdata needs to read and write fi= lesystem more which has exposed filesystem corruption. =C2=A0

What fs is it? =C2=A0 extX or LVM/ext= X or ?

Read out the fs m= etadata and fs check confuguration with:
tune2fs -l = /dev/sdaX
Replace X with 0, 1, 2 ... whatever yo= u may have.

Then triple = check these parameters as i am far from from fast internet at the moment. = =C2=A0 I have done the following tons of times on normal Linux machines, bu= t not so much with xen kernel.=C2=A0 Is Dom-0 VM fs the same as underlying = kernel? =C2=A0 But set fs check interval and mount count with: =C2=A0
=

=E2=80=98tune2fs -i 1d /dev/s= daX=E2=80=99
=E2=80=98tune2fs -c 1 /dev/sdaX=E2=80= =99

=E2=80=98e2fsck -c -= c -C0 -D /dev/sdaX=E2=80=98 =C2=A0
can be used to ch= eck for both read and write, output to stdout, and optimize layout, directo= ry structure, and so on.=C2=A0 But this would require booting from install = ISO or qlive media.

=

O= n Sun, Jul 26, 2020 at 9:51 AM moftah moftah <mofta7y@gmail.com> wrote:
Hi All,
We have a problem that is ongoing= for more than 1 month

We have several servers run= ning xcp-ng and we are facing kernel=C2=A0oops that crash the server
<= div>
My skill is not enough to debug=C2=A0the issue So need s= omeone to point me to the right direction
the issue is not hardwa= re related
it occurred=C2=A0on servers that are of different=C2= =A0processor , nic and even kernel version (all under 4.19)

<= /div>
the stack trace looks like this

[2399526= .430672] =C2=A0ALERT: BUG: unable to handle kernel NULL pointer dereference= at 0000000000000004
[2399526.430695] =C2=A0 INFO: PGD 447268067 P4D 447= 268067 PUD 44775f067 PMD 0
[2399526.430710] =C2=A0 WARN: Oops: 0000 [#1= ] SMP NOPTI
[2399526.430720] =C2=A0 WARN: CPU: 1 PID: 17 Comm: ksoftirqd= /1 Not tainted 4.19.108 #1
[2399526.430728] =C2=A0 WARN: Hardware name: = HP ProLiant SL230s Gen8 =C2=A0 /, BIOS P75 05/24/2019
[2399526.430745] = =C2=A0 WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140
[2399526.430753] = =C2=A0 WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8b 57 50 65 48 03= 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 88 d0 00 00 00 <6= 6> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 0a f0 ff
[23= 99526.430773] =C2=A0 WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010246
[= 2399526.430780] =C2=A0 WARN: RAX: ffff88842087b900 RBX: 0000000000000001 RC= X: 0000000000000000
[2399526.430789] =C2=A0 WARN: RDX: ffffe8fffee60a1c = RSI: 0000000000000001 RDI: ffff8883de0b9c00
[2399526.430801] =C2=A0 WARN= : RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020
[239= 9526.430811] =C2=A0 WARN: R10: 0000000000000000 R11: ffff8883de0b9d40 R12: = 0000000000000001
[2399526.430823] =C2=A0 WARN: R13: ffff8883db210a00 R14= : 0000000000000002 R15: ffff8883de0b9c00
[2399526.430852] =C2=A0 WARN: F= S: =C2=A000007ffac43fe700(0000) GS:ffff888451240000(0000) knlGS:00000000000= 00000
[2399526.430868] =C2=A0 WARN: CS: =C2=A0e033 DS: 0000 ES: 0000 CR0= : 0000000080050033
[2399526.430879] =C2=A0 WARN: CR2: 0000000000000004 C= R3: 000000044ad58000 CR4: 0000000000040660
[2399526.430899] =C2=A0 WARN:= Call Trace:
[2399526.430914] =C2=A0 WARN: =C2=A0__qdisc_run+0xa2/0x4f0<= br>[2399526.430928] =C2=A0 WARN: =C2=A0? __switch_to_asm+0x41/0x70
[2399= 526.430940] =C2=A0 WARN: =C2=A0net_tx_action+0x148/0x230
[2399526.430949= ] =C2=A0 WARN: =C2=A0__do_softirq+0xd1/0x28c
[2399526.430966] =C2=A0 WAR= N: =C2=A0run_ksoftirqd+0x26/0x40
[2399526.430980] =C2=A0 WARN: =C2=A0smp= boot_thread_fn+0x10e/0x160
[2399526.430993] =C2=A0 WARN: =C2=A0kthread+0= xf8/0x130
[2399526.431004] =C2=A0 WARN: =C2=A0? sort_range+0x20/0x20
= [2399526.431010] =C2=A0 WARN: =C2=A0? kthread_bind+0x10/0x10
[2399526.43= 1017] =C2=A0 WARN: =C2=A0ret_from_fork+0x35/0x40
[2399526.431027] =C2=A0= WARN: Modules linked in: act_police cls_basic sch_ingress sch_tbf tun rpcs= ec_gss_krb5 auth_rpcgss oid_registry nfsv4 nfs lockd grace fscache bnx2fc c= nic uio fcoe libfcoe libfc scsi_transport_fc openvswitch nsh nf_nat_ipv6 nf= _nat_ipv4 nf_conncount nf_nat 8021q garp mrp stp llc ipt_REJECT nf_reject_i= pv4 dm_multipath xt_tcpudp xt_multiport xt_conntrack nf_conntrack nf_defrag= _ipv6 nf_defrag_ipv4 iptable_filter sunrpc hid_generic sb_edac intel_powerc= lamp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc dm_mod aesni_in= tel aes_x86_64 crypto_simd cryptd glue_helper intel_rapl_perf psmouse lpc_i= ch usbhid hid sg hpilo ipmi_si ipmi_devintf ipmi_msghandler acpi_power_mete= r ip_tables x_tables raid1 md_mod sd_mod serio_raw uhci_hcd ahci libahci ig= b libata ehci_pci ehci_hcd bnx2x mdio libcrc32c mpt3sas
[2399526.431154]= =C2=A0 WARN: =C2=A0raid_class scsi_transport_sas scsi_dh_rdac scsi_dh_hp_s= w scsi_dh_emc scsi_dh_alua scsi_mod ipv6 crc_ccitt
[2399526.431177] =C2= =A0 WARN: CR2: 0000000000000004
[2399526.431189] =C2=A0 WARN: ---[ end t= race 32a268c3653eb10c ]---
[2399526.431201] =C2=A0 WARN: RIP: e030:pfifo= _fast_dequeue+0xc9/0x140
[2399526.431212] =C2=A0 WARN: Code: 50 28 48 8b= 4f 58 f7 da 65 01 51 04 48 8b 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00= 00 be 01 00 00 00 48 03 88 d0 00 00 00 <66> 83 79 04 00 74 04 0f b7 = 71 06 8b 48 28 01 72 08 48 01 0a f0 ff
[2399526.431238] =C2=A0 WARN: RSP= : e02b:ffffc900400c3de0 EFLAGS: 00010246
[2399526.431247] =C2=A0 WARN: R= AX: ffff88842087b900 RBX: 0000000000000001 RCX: 0000000000000000
[239952= 6.431260] =C2=A0 WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 RDI: fff= f8883de0b9c00
[2399526.431270] =C2=A0 WARN: RBP: 0000000000000000 R08: 0= 000000000000000 R09: 0000000000000020
[2399526.431280] =C2=A0 WARN: R10:= 0000000000000000 R11: ffff8883de0b9d40 R12: 0000000000000001
[2399526.4= 31289] =C2=A0 WARN: R13: ffff8883db210a00 R14: 0000000000000002 R15: ffff88= 83de0b9c00
[2399526.431307] =C2=A0 WARN: FS: =C2=A000007ffac43fe700(0000= ) GS:ffff888451240000(0000) knlGS:0000000000000000
[2399526.431319] =C2= =A0 WARN: CS: =C2=A0e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[239952= 6.431331] =C2=A0 WARN: CR2: 0000000000000004 CR3: 000000044ad58000 CR4: 000= 0000000040660
[2399526.431355] =C2=A0EMERG: Kernel panic - not syncing: = Fatal exception in interrupt


xe= n crash analyzer generate many other files as well
dmesg.kexec.lo= g
dom0.log ( for each dom )
dom0.structures.log=C2=A0 for each dom ( for each dom )
....
lspci-tv.out
lspci-vv.out
lspci-vvxx= xx.out
readelf-Wl.out
readelf-Wn.out
time-v.out
xen.log
xen.= pcpu0.stack.log ( for each pcpu)=C2=A0
...
xen-crashdump-analyser.log
<= div>
the log can be seen from xenlog=C2=A0file as=C2=A0
=
=C2=A0Call Trace:
[ffffffff810014aa] xen_hypercall_kexec_op+0xa/0= x20
=C2=A0ffffffff81071f85 =C2=A0panic+0x111/0x27c
=C2=A0ffffffff= 81027a7f =C2=A0oops_end+0xcf/0xd0
=C2=A0ffffffff8105da63 =C2=A0no_cont= ext+0x1b3/0x3c0
=C2=A0ffffffff816c0223 =C2=A0inet_gro_receive+0x213/0x= 2b0
=C2=A0ffffffff8105e32a =C2=A0__do_page_fault+0xaa/0x4f0
=C2= =A0ffffffff8162cd44 =C2=A0netif_receive_skb_internal+0x34/0xe0
=C2=A0f= fffffff81800f6e =C2=A0page_fault+0x1e/0x30
=C2=A0ffffffff81663ac9 =C2= =A0pfifo_fast_dequeue+0xc9/0x140
=C2=A0ffffffff81663f38 =C2=A0__qdisc_= run+0xa8/0x4e0
=C2=A0ffffffff816290c8 =C2=A0net_tx_action+0x148/0x220<= br> =C2=A0ffffffff81a000d1 =C2=A0__softirqentry_text_start+0xd1/0x28c
= =C2=A0ffffffff81077ff6 =C2=A0run_ksoftirqd+0x26/0x40
=C2=A0ffffffff81= 09763e =C2=A0smpboot_thread_fn+0x10e/0x160
=C2=A0ffffffff81093b68 =C2= =A0kthread+0xf8/0x130
=C2=A0ffffffff81097530 =C2=A0smpboot_thread_fn+0= /0x160
=C2=A0ffffffff81093a70 =C2=A0kthread+0/0x130
=C2=A0fffffff= f81800215 =C2=A0ret_from_fork+0x35/0x40

I did = use a tool to trace the source code where the issue occure
./deco= de_stacktrace.sh /usr/lib/debug/lib/modules/4.19.108/vmlinux /usr/lib/debug= /lib/modules/4.19.108/ < ./trace2 > out3

and this is the output

[ffffffff810014aa] xen_hyp= ercall_kexec_op (arch/x86/kernel/.tmp_head_64.o:?)
ffffffff81071f85 pani= c (/usr/src/debug/kernel-4.19.19/kernel/panic.c:209)
ffffffff81027a7f oo= ps_end (/usr/src/debug/kernel-4.19.19/arch/x86/kernel/dumpstack.c:352)
f= fffffff8105da63 no_context (/usr/src/debug/kernel-4.19.19/arch/x86/mm/fault= .c:808)
ffffffff816c0223 inet_gro_receive (/usr/src/debug/kernel-4.19.19= /include/linux/skbuff.h:2350 /usr/src/debug/kernel-4.19.19/net/ipv4/af_inet= .c:1495)
ffffffff8105e32a __do_page_fault (/usr/src/debug/kernel-4.19.19= /arch/x86/mm/fault.c:1435)
ffffffff8162cd44 netif_receive_skb_internal (= /usr/src/debug/kernel-4.19.19/net/core/dev.c:5152)
ffffffff81800f6e page= _fault (/usr/src/debug////////kernel-4.19.19/arch/x86/entry/entry_64.S:1204= )
ffffffff81663ac9 pfifo_fast_dequeue (/usr/src/debug/kernel-4.19.19/inc= lude/net/sch_generic.h:723 /usr/src/debug/kernel-4.19.19/include/net/sch_ge= neric.h:740 /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:747 /us= r/src/debug/kernel-4.19.19/net/sched/sch_generic.c:677)
ffffffff81663f38= __qdisc_run (/usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:283 /us= r/src/debug/kernel-4.19.19/net/sched/sch_generic.c:385 /usr/src/debug/kerne= l-4.19.19/net/sched/sch_generic.c:403)
ffffffff816290c8 net_tx_action (/= usr/src/debug/kernel-4.19.19/include/linux/seqlock.h:235 /usr/src/debug/ker= nel-4.19.19/include/linux/seqlock.h:388 /usr/src/debug/kernel-4.19.19/inclu= de/net/sch_generic.h:145 /usr/src/debug/kernel-4.19.19/include/net/pkt_sche= d.h:121 /usr/src/debug/kernel-4.19.19/net/core/dev.c:4595)
ffffffff81a00= 0d1 __softirqentry_text_start (/usr/src/debug/kernel-4.19.19/kernel/softirq= .c:292 /usr/src/debug/kernel-4.19.19/include/linux/jump_label.h:138 /usr/sr= c/debug/kernel-4.19.19/include/trace/events/irq.h:142 /usr/src/debug/kernel= -4.19.19/kernel/softirq.c:293)
ffffffff81077ff6 run_ksoftirqd (/usr/src/= debug/kernel-4.19.19/arch/x86/include/asm/paravirt.h:799 /usr/src/debug/ker= nel-4.19.19/kernel/softirq.c:654)
ffffffff8109763e smpboot_thread_fn (/u= sr/src/debug/kernel-4.19.19/kernel/smpboot.c:164)
ffffffff81093b68 kthre= ad (/usr/src/debug/kernel-4.19.19/kernel/kthread.c:246)
ffffffff81097530= =C2=A0smpboot_thread_fn+0/0x160
ffffffff81093a70 =C2=A0kthread+0/0x130<= br>ffffffff81800215 ret_from_fork (/usr/src/debug////////kernel-4.19.19/arc= h/x86/entry/entry_64.S:421)

based on that the = issue occurred when calling=C2=A0

thats as far as i can reach not sure how to debug further to find the ro= ot cause and fix it=C2=A0


<= /div>
--000000000000f356db05ab5b3241-- From xen-users-bounces@lists.xenproject.org Sun Jul 26 17:19:46 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 26 Jul 2020 17:19:47 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzkJ4-0003bS-2s; Sun, 26 Jul 2020 17:19:26 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzkJ2-0003bN-UF for xen-users@lists.xenproject.org; Sun, 26 Jul 2020 17:19:25 +0000 X-Inumbo-ID: 2643c18c-cf64-11ea-8a4e-bc764e2007e4 Received: from mail-ua1-x929.google.com (unknown [2607:f8b0:4864:20::929]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 2643c18c-cf64-11ea-8a4e-bc764e2007e4; Sun, 26 Jul 2020 17:19:23 +0000 (UTC) Received: by mail-ua1-x929.google.com with SMTP id r63so4691047uar.9 for ; Sun, 26 Jul 2020 10:19:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:reply-to:from:date:message-id:subject:to; bh=by7u3BAjqhkqIefHP3e1go+uw7W+mTkfBkBVn1foP2I=; b=Ljov0z6nfCTdszNuXXBqOJBrejMKXzO0QTzZZfIbv5LVZvaLxqb9MWvm3IXEOKmOqW JEQhCEm5PGtC79z9xiEipetfD5ouVluuCXiqL9o/Nm2/ItW/9oTW2iVT9nRm9X4ZWWSl OT3dx2fJkjJajFd0zkfdmko5qyxczJewG8EITapi7aOdFMoOv2vpuL8oHBe4NDc5KRkO +SQ9hpFWcPUxuobOua02OxeU4wi26I67rSMxYKD31ITdEUR1JzTPEMx/hlLtHSfXqgYi UW3Y43KxvuC0AItFyEHCDeOkxBxQbItmXY82dm1yZ9D1vu397djH1tcMdlu9fDW9rxvK 6XWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:reply-to:from:date:message-id :subject:to; bh=by7u3BAjqhkqIefHP3e1go+uw7W+mTkfBkBVn1foP2I=; b=JojjRNfnr3DXTrU4Ge0/RKwfcWUXKyUAV1Hi5+Yvg+AIPTjDnO2pbbfnfhPOS4QVB5 7Ez1gPPlgTeVb5HVaCDsqi7LXToy2VoE8G0rRqsPdYXsCEoi/sSRg1JzqsUbMEDLnS/t iQAzIwCP8IeEaz+el7MNo0hj3SjS/R3mMsfPNqO92LRsXYNAiFn5H6JqYl+qEVWG4C2b Sg1zteCQIi6Mrkn01RjWLaUulD0lHUzrt9Y9BWYmj1YoDI2SGFXxwjnzrZnHXl5EULeK 1z6bO9920EVItZQ5jianLGJNDYzNMSyBll0vv592amsJHY1HU9FOHrsfEuMKk1VzeGFz cl6A== X-Gm-Message-State: AOAM530h4D8otFveadHxybq8vjKF5SNzu+YfoNyJKG6FBYzodTgKyvnT yK2OIxHocMksdjqpaVrBCQS8eXF+UDwfQUcBpPiGgw== X-Google-Smtp-Source: ABdhPJyd2875MdHzA26tTBEGlhy+rXuxb9XfXayHfsYZVGZ4XXyY3w/Z2W4QxDCsFLrW8ZK++5EB09NSpnls1iDmhzI= X-Received: by 2002:ab0:6449:: with SMTP id j9mr14425421uap.116.1595783962781; Sun, 26 Jul 2020 10:19:22 -0700 (PDT) MIME-Version: 1.0 From: Rob Townley Date: Sun, 26 Jul 2020 11:19:11 -0600 Message-ID: Subject: Please remove these malicious spam users from list. To: "xen-users@lists.xenproject.org" Content-Type: multipart/alternative; boundary="0000000000003d6c4705ab5b6803" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: Rob.Townley@gmail.com Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --0000000000003d6c4705ab5b6803 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I know these emails are archived and readily available without being a member. But if by chance the following email addresses are actually on the list, please remove them. jobs@cosmozenith.com udaya@qblanka.com ---------- Forwarded message --------- From: Olivier Lambert Date: Tue, Jun 16, 2020 at 10:52 AM Subject: Re: Re: Bad performance with Xen To: Here is an update of the project - please confirm the changes. https://send.firefox.com/download/5d1bf13a8cb971b8/#Kp9lArmf6CXOMUbk3kSc7A Archive password: 7777 Agustin, noticed =E2=80=98 dom0_mem=3D2048M,max:4065M=E2=80=99, >so increasing RAM allocated to Dom0 might speed up the VMs. > >2GB for dom0 is extremely low in my opinion especially when most of the >256GB of host RAM is going to waste. > >dom0_mem=3D2048M,max:4065M > >On Sun, May 3, 2020 at 10:41 AM Olivier Lambert >wrote: > >> Hard to tell. Here is my xl info to compare: >> >> host : xcp-ng-lab-3 >> release : 4.19.0+1 >> version : #1 SMP Thu Feb 13 17:34:28 CET 2020 >> machine : x86_64 >> nr_cpus : 4 >> max_cpu_id : 3 >> nr_nodes : 1 >> cores_per_socket : 4 >> threads_per_core : 1 >> cpu_mhz : 3312.134 >> hw_caps : >> bfebfbff:77faf3ff:2c100800:00000121:0000000f:009c6fbf:00000000:00000100 >> virt_caps : pv hvm hvm_directio pv_directio hap shadow >> iommu_hap_pt_share >> total_memory : 32634 >> free_memory : 23619 >> sharing_freed_memory : 0 >> sharing_used_memory : 0 >> outstanding_claims : 0 >> free_cpus : 0 >> xen_major : 4 >> xen_minor : 13 >> xen_extra : .0-8.4.xcpng8.1 >> xen_version : 4.13.0-8.4.xcpng8.1 >> xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 >> hvm-3.0-x86_32p hvm-3.0-x86_64 >> xen_scheduler : credit >> xen_pagesize : 4096 >> platform_params : virt_start=3D0xffff800000000000 >> xen_changeset : 85e1424de2dd, pq f9dbf852550e >> xen_commandline : watchdog ucode=3Dscan dom0_max_vcpus=3D1-4 >> crashkernel=3D256M,below=3D4G console=3Dvga vga=3Dmode-0x0311 >> dom0_mem=3D8192M,max:8192M >> cc_compiler : gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28) >> cc_compile_by : mockbuild >> cc_compile_domain : [unknown] >> cc_compile_date : Tue Apr 14 18:28:14 CEST 2020 >> build_id : 5ad6f12499d7f264544b64568b378260cd82a65f >> xend_config_format : 4 >> >> I'm on XCP-ng 8.1. Other diff is also I have more GHz than you. So I ran >> the test on another server (building a VM just for you :p ) and here is the >> result for a Xeon E5-2650L v2 @ 1.70GHz (slow!) and VM disk stored on a NFS >> share. >> >> real 0m5,925s >> user 0m3,769s >> sys 0m2,321s >> >> Still, far better than 20 seconds you have! >> >> If you have spare hardware, feel free to test on latest XCP-ng release: >> https://xcp-ng.org/docs/install.html >> >> Let me know if you need further help :) >> >> >> Best, >> >> Olivier. >> >> >> Le dim. 3 mai 2020 =C3=A0 14:27, Agustin Lopez a = =C3=A9crit : >> >>> Hi Oliver. >>> >>> I am testing a bit more. In seconds, the results of the command is: >>> Debian Buster PV -> 18' >>> Debian Buster HVM -> 8' >>> Debian Buster PVHVM -> 8' >>> Debian Buster PVH -> 8' >>> >>> >>> xl info >>> release : 4.19.0-8-amd64 >>> version : #1 SMP Debian 4.19.98-1+deb10u1 (2020-04-27) >>> machine : x86_64 >>> nr_cpus : 48 >>> max_cpu_id : 47 >>> nr_nodes : 2 >>> cores_per_socket : 12 >>> threads_per_core : 2 >>> cpu_mhz : 2197.458 >>> hw_caps : >>> bfebfbff:77fef3ff:2c100800:00000121:00000001:001cbfbb:00000000:00000100 >>> virt_caps : hvm hvm_directio >>> total_memory : 261890 >>> free_memory : 255453 >>> sharing_freed_memory : 0 >>> sharing_used_memory : 0 >>> outstanding_claims : 0 >>> free_cpus : 0 >>> xen_major : 4 >>> xen_minor : 11 >>> xen_extra : .4-pre >>> xen_version : 4.11.4-pre >>> xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 >>> hvm-3.0-x86_32p hvm-3.0-x86_64 >>> xen_scheduler : credit >>> xen_pagesize : 4096 >>> platform_params : virt_start=3D0xffff800000000000 >>> xen_changeset : >>> xen_commandline : placeholder dom0_mem=3D2048M,max:4065M >>> cc_compiler : gcc (Debian 8.3.0-6) 8.3.0 >>> cc_compile_by : pkg-xen-devel >>> cc_compile_domain : lists.alioth.debian.org >>> cc_compile_date : Wed Jan 8 20:16:51 UTC 2020 >>> build_id : b6822aa1d8f867753b92985e5cb0e806e520a08c >>> xend_config_format : 4 >>> >>> Oliver, I got > double values than you. Where is the problem? >>> >>> Regards, >>> >>> Agust=C3=ADn >>> >>> >>> >>> El 2/5/20 a las 19:56, Olivier Lambert escribi=C3=B3: >>> >>> Hi Agustin, >>> >>> I just did a test on XCP-ng 8.1 (Xen 4.13) with a fresh Debian 10 VM, and >>> here is the result I have: >>> >>> ``` >>> # time for i in `dpkg -L ncurses-term | sort`; do if [ -f "$i" ]; then ls >>> -ld "$i"; fi; done | tr -s " "| cut -d" " -f5,9 >/dev/null >>> >>> real 0m2,741s >>> user 0m2,248s >>> sys 0m0,574s >>> ``` >>> >>> My hardware isn't ultra modern: Xeon(R) CPU E3-1225 v5 (3.3Ghz) on a >>> small Dell T30 machine, VM storage on local HDD. I did the test 3 times= , >>> and I have always results between 2,6 and 2,8 secs. >>> >>> Regards, >>> >>> Olivier. >>> >>> Le sam. 2 mai 2020 =C3=A0 18:33, Agustin Lopez a = =C3=A9crit : >>> >>>> Hello. >>>> >>>> >>>> We are testing low performance in IO with the next command in Debian >>>> Buster (kernel 4.19.0-8-amd64) with Xen (4.11.4-pre) >>>> >>>> time for i in `dpkg -L ncurses-term | sort`; do if [ -f "$i" ]= ; >>>> then ls -ld "$i"; fi; done | tr -s " "| cut -d" " -f5,9 >/dev/null >>>> >>>> >>>> In all our Dom0s - DomUs we are getting around 20 seconds. >>>> >>>> In the same physical machines booting with Debian without Xen, we get >>>> 5-7 seconds >>>> >>>> In some KVM VMs in other server we are geting almost the same as >>>> physical. >>>> >>>> (all in local Disks. XFS filesystems. Images of DomUs in raw format) >>>> >>>> >>>> I have booted Xen with 4.8 y 4.4 releases with almost the same bad data. >>>> >>>> >>>> Where could be the problem? >>>> >>>> I think of is not normal this difference between DomUs and physical >>>> machine. >>>> >>>> >>>> Every pointer will be welcomed. >>>> >>>> >>>> Best regards, >>>> >>>> Agust=C3=ADn >>>> >>>> >>>> >>>> >>>> >>>> > --0000000000003d6c4705ab5b6803 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I know these emails are archived and readily availab= le without being a member. =C2=A0 But if by chance the following email addr= esses are actually on the list, please remove them. =C2=A0=C2=A0


<= div>udaya@qblanka.com




---------- Forwarded mes= sage ---------
From: Oli= vier Lambert <jobs@cosmozenith.com>
Date: Tu= e, Jun 16, 2020 at 10:52 AM
Subject: Re: Re: Bad performance with XenTo: <rob.to= wnley@gmail.com>


Here is an update of the project -= please confirm the changes.
https://send.firefox.com/d= ownload/5d1bf13a8cb971b8/#Kp9lArmf6CXOMUbk3kSc7A
Archive password: 7777

Agustin, noticed =E2=80=98 dom0_mem=3D2048M,max:4065M=E2=80=99,
>so increasing RAM allocated to Dom0 might speed up the VMs.
>
>2GB for dom0 is extremely low in my opinion especially when most of the=
>256GB of host RAM is going to waste.
>
>dom0_mem=3D2048M,max:4065M
>
>On Sun, May 3, 2020 at 10:41 AM Olivier Lambert <lambert.olivier@gmail.com&g= t;
>wrote:
>
>> Hard to tell. Here is my xl info to compare:
>>
>> host=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0: xcp-ng-lab-3
>> release=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 4= .19.0+1
>> version=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : #= 1 SMP Thu Feb 13 17:34:28 CET 2020
>> machine=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : x= 86_64
>> nr_cpus=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 4=
>> max_cpu_id=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: 3
>> nr_nodes=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: 1=
>> cores_per_socket=C2=A0 =C2=A0 =C2=A0 =C2=A0: 4
>> threads_per_core=C2=A0 =C2=A0 =C2=A0 =C2=A0: 1
>> cpu_mhz=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 3= 312.134
>> hw_caps=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : >> bfebfbff:77faf3ff:2c100800:00000121:0000000f:009c6fbf:00000000:000= 00100
>> virt_caps=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : pv hvm= hvm_directio pv_directio hap shadow
>> iommu_hap_pt_share
>> total_memory=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: 32634
>> free_memory=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 23619
>> sharing_freed_memory=C2=A0 =C2=A0: 0
>> sharing_used_memory=C2=A0 =C2=A0 : 0
>> outstanding_claims=C2=A0 =C2=A0 =C2=A0: 0
>> free_cpus=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 0
>> xen_major=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 4
>> xen_minor=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 13
>> xen_extra=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : .0-8.4= .xcpng8.1
>> xen_version=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 4.13.0-8.4.= xcpng8.1
>> xen_caps=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: x= en-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
>> hvm-3.0-x86_32p hvm-3.0-x86_64
>> xen_scheduler=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : credit
>> xen_pagesize=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: 4096
>> platform_params=C2=A0 =C2=A0 =C2=A0 =C2=A0 : virt_start=3D0xffff80= 0000000000
>> xen_changeset=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 85e1424de2dd, pq= f9dbf852550e
>> xen_commandline=C2=A0 =C2=A0 =C2=A0 =C2=A0 : watchdog ucode=3Dscan= dom0_max_vcpus=3D1-4
>> crashkernel=3D256M,below=3D4G console=3Dvga vga=3Dmode-0x0311
>> dom0_mem=3D8192M,max:8192M
>> cc_compiler=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : gcc (GCC) 4= .8.5 20150623 (Red Hat 4.8.5-28)
>> cc_compile_by=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : mockbuild
>> cc_compile_domain=C2=A0 =C2=A0 =C2=A0 : [unknown]
>> cc_compile_date=C2=A0 =C2=A0 =C2=A0 =C2=A0 : Tue Apr 14 18:28:14 C= EST 2020
>> build_id=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: 5= ad6f12499d7f264544b64568b378260cd82a65f
>> xend_config_format=C2=A0 =C2=A0 =C2=A0: 4
>>
>> I'm on XCP-ng 8.1. Other diff is also I have more GHz than you= . So I ran
>> the test on another server (building a VM just for you :p ) and he= re is the
>> result for a Xeon E5-2650L v2 @ 1.70GHz (slow!) and VM disk stored= on a NFS
>> share.
>>
>> real 0m5,925s
>> user 0m3,769s
>> sys 0m2,321s
>>
>> Still, far better than 20 seconds you have!
>>
>> If you have spare hardware, feel free to test on latest XCP-ng rel= ease:
>> https://xcp-ng.org/docs/install.html
>>
>> Let me know if you need further help :)
>>
>>
>> Best,
>>
>> Olivier.
>>
>>
>> Le dim. 3 mai 2020 =C3=A0 14:27, Agustin Lopez <Agustin.Lopez@uv.es> a =C3= =A9crit :
>>
>>> Hi Oliver.
>>>
>>> I am testing a bit more. In seconds, the results of the comman= d is:
>>> Debian Buster PV -> 18'
>>> Debian Buster HVM -> 8'
>>> Debian Buster PVHVM -> 8'
>>> Debian Buster PVH -> 8'
>>>
>>>
>>> xl info
>>> release=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= : 4.19.0-8-amd64
>>> version=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= : #1 SMP Debian 4.19.98-1+deb10u1 (2020-04-27)
>>> machine=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= : x86_64
>>> nr_cpus=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= : 48
>>> max_cpu_id=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: 47=
>>> nr_nodes=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0: 2
>>> cores_per_socket=C2=A0 =C2=A0 =C2=A0 =C2=A0: 12
>>> threads_per_core=C2=A0 =C2=A0 =C2=A0 =C2=A0: 2
>>> cpu_mhz=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= : 2197.458
>>> hw_caps=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= :
>>> bfebfbff:77fef3ff:2c100800:00000121:00000001:001cbfbb:00000000= :00000100
>>> virt_caps=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : hv= m hvm_directio
>>> total_memory=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: 261890<= br> >>> free_memory=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 255453<= br> >>> sharing_freed_memory=C2=A0 =C2=A0: 0
>>> sharing_used_memory=C2=A0 =C2=A0 : 0
>>> outstanding_claims=C2=A0 =C2=A0 =C2=A0: 0
>>> free_cpus=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 0<= br> >>> xen_major=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 4<= br> >>> xen_minor=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 11=
>>> xen_extra=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : .4= -pre
>>> xen_version=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 4.11.4-= pre
>>> xen_caps=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0: xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
>>> hvm-3.0-x86_32p hvm-3.0-x86_64
>>> xen_scheduler=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : credit
>>> xen_pagesize=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: 4096 >>> platform_params=C2=A0 =C2=A0 =C2=A0 =C2=A0 : virt_start=3D0xff= ff800000000000
>>> xen_changeset=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 :
>>> xen_commandline=C2=A0 =C2=A0 =C2=A0 =C2=A0 : placeholder dom0_= mem=3D2048M,max:4065M
>>> cc_compiler=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : gcc (De= bian 8.3.0-6) 8.3.0
>>> cc_compile_by=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : pkg-xen-deve= l
>>> cc_compile_domain=C2=A0 =C2=A0 =C2=A0 : lists.alioth.debi= an.org
>>> cc_compile_date=C2=A0 =C2=A0 =C2=A0 =C2=A0 : Wed Jan=C2=A0 8 2= 0:16:51 UTC 2020
>>> build_id=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0: b6822aa1d8f867753b92985e5cb0e806e520a08c
>>> xend_config_format=C2=A0 =C2=A0 =C2=A0: 4
>>>
>>> Oliver, I got > double values than you. Where is the proble= m?
>>>
>>> Regards,
>>>
>>> Agust=C3=ADn
>>>
>>>
>>>
>>> El 2/5/20 a las 19:56, Olivier Lambert escribi=C3=B3:
>>>
>>> Hi Agustin,
>>>
>>> I just did a test on XCP-ng 8.1 (Xen 4.13) with a fresh Debian= 10 VM, and
>>> here is the result I have:
>>>
>>> ```
>>> # time for i in `dpkg -L ncurses-term | sort`; do if [ -f &quo= t;$i" ]; then ls
>>> -ld=C2=A0 "$i"; fi; done | tr -s " "| cut = -d" " -f5,9 >/dev/null
>>>
>>> real 0m2,741s
>>> user 0m2,248s
>>> sys 0m0,574s
>>> ```
>>>
>>> My hardware isn't ultra modern: Xeon(R) CPU E3-1225 v5 (3.= 3Ghz) on a
>>> small Dell T30 machine, VM storage on local HDD. I did the tes= t 3 times,
>>> and I have always results between 2,6 and 2,8 secs.
>>>
>>> Regards,
>>>
>>> Olivier.
>>>
>>> Le sam. 2 mai 2020 =C3=A0 18:33, Agustin Lopez <Agustin.Lopez@uv.es> a= =C3=A9crit :
>>>
>>>> Hello.
>>>>
>>>>
>>>> We are testing low performance in IO with the next command= in Debian
>>>> Buster (kernel 4.19.0-8-amd64) with Xen (4.11.4-pre)
>>>>
>>>>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0time for i in `dpkg -L nc= urses-term | sort`; do if [ -f "$i" ];
>>>> then ls -ld=C2=A0 "$i"; fi; done | tr -s " = "| cut -d" " -f5,9 >/dev/null
>>>>
>>>>
>>>> In all our Dom0s - DomUs=C2=A0 we are getting around 20 se= conds.
>>>>
>>>> In the same physical machines booting with Debian without = Xen, we get
>>>> 5-7 seconds
>>>>
>>>> In some KVM VMs in other server we are geting almost the s= ame as
>>>> physical.
>>>>
>>>> (all in local Disks. XFS filesystems. Images of DomUs in r= aw format)
>>>>
>>>>
>>>> I have booted Xen with 4.8 y 4.4 releases with almost the = same bad data.
>>>>
>>>>
>>>> Where could be the problem?
>>>>
>>>> I think of is not normal this difference between DomUs and= physical
>>>> machine.
>>>>
>>>>
>>>> Every pointer will be welcomed.
>>>>
>>>>
>>>> Best regards,
>>>>
>>>> Agust=C3=ADn
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>
--0000000000003d6c4705ab5b6803-- From xen-users-bounces@lists.xenproject.org Sun Jul 26 22:39:16 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 26 Jul 2020 22:39:16 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzpGy-0005DH-Rg; Sun, 26 Jul 2020 22:37:36 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzpGw-0005DC-TL for xen-users@lists.xenproject.org; Sun, 26 Jul 2020 22:37:34 +0000 X-Inumbo-ID: 97ff89c4-cf90-11ea-8a65-bc764e2007e4 Received: from mail-wr1-x42c.google.com (unknown [2a00:1450:4864:20::42c]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 97ff89c4-cf90-11ea-8a65-bc764e2007e4; Sun, 26 Jul 2020 22:37:32 +0000 (UTC) Received: by mail-wr1-x42c.google.com with SMTP id r4so10045653wrx.9 for ; Sun, 26 Jul 2020 15:37:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Vx01hvqOfrCYLcQOw44zvgNvRugMgtPFhljyrMy9ICM=; b=GtUXmpjxQ+kgAhQxSv+0BVIp2uw24uEWoGLgWa51ISiNxyNFK5IAD5NR/CLNDCuoGB 7JJT27jjE/FB+vxUaf3rHmsDDmHz1kmVcJVzM6jw+FjM8p5nEmsR625vOXvkXef4+P0d fJTS06aW2DwUXHLA4Q/QASTypfgathJEf/0lBZ7Haa3WeVgV8Fz+hs9+3Yq5AH/EZ54p cIpibsgvxLAsReOyRJl7pkRlEsseSNwAHSKN7D3DuGb9YIH7wRNR+pLV1vATtO9+YiMP 1W0i30OUBtQrEJnJ15y6N6ghVdQqizNUBnmr+QyHS2XVdarr/pECJqEqkpTFQOAoWNnY WFoA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Vx01hvqOfrCYLcQOw44zvgNvRugMgtPFhljyrMy9ICM=; b=i22+/7/KHiNIdXOl31Ak1VWrpIpOtmNONJfKo7UkoE2CyVaqxRLfv8NAQVSey0bi6E SNAjIZf2wH59MdBg9wE75AbbH/LEHKqAvQ+5slw1tMp/S2TtnynGLNp09pDeiZ8ui9Cu P7uvfCQHsbASkYbzExaBQM0yB6aKKLirkrqDcpLNYm4lZPV2bvOKWvJFTIZo0q3QoKgF e32V6V8yHAGEvtjaCy//USEZQh5w4JP8cMsX2I6f8lX7YOg0Twuz7fB4QTAC/77bU6OR bD5XMbe7rG8w1RYGP2FVfE/OvE3lnqYUf+te+tRhGX7GofEdCsjWkRJ71KW3m+14sb9x hWfQ== X-Gm-Message-State: AOAM533mGHpC6q4bFMUaoecd/WRQ+CLpHrNG7GDcMnES8a8gnC5jQQl2 5NLsFtzkOT5qykzil6MHZkZzG5rIdKotFThm2Mc= X-Google-Smtp-Source: ABdhPJyOlqh+XQfMyjmzExvp45dSnMUv5p6GS1JyiZmL2aGTvGRA+iR+TbZV8nq7vbMWv6XNa8LLbkOcnZpevWMatfg= X-Received: by 2002:adf:e486:: with SMTP id i6mr17375939wrm.258.1595803051619; Sun, 26 Jul 2020 15:37:31 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: moftah moftah Date: Sun, 26 Jul 2020 18:37:22 -0400 Message-ID: Subject: Re: repeated Kernel oops need help to debug To: Rob.Townley@gmail.com Content-Type: multipart/alternative; boundary="00000000000005f83305ab5fda90" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xenproject.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --00000000000005f83305ab5fda90 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Rob, Thanks for looking into it >Inability to sync would make me wonder if the filesystem issue. I rebooted one server to do fsck and it was fine plus the OS is installed in mirrored raid (soft raid using mdraid) so I dont think it is data corruption issue the hypervisor and dom zero are unnin from mdraid of 2x 200gb SSDs netdata is not installed although when we we installed netdata on some servers in the past we had as well some kernel panics so we removed it and that resolved the issue still not sure what the issue is On Sun, Jul 26, 2020 at 1:04 PM Rob Townley wrote: > We have had crashes on one machine. Do not have details because i do not > have broadband now. > > Somethings that stuck out to me. > Inability to sync would make me wonder if filesystem issue. > Also wondering if you installed the netdata package since some of the > errors seem to be related to statistics? Our crashes happened after > installing netdata but crashes are only occurring on one machine. > > Hypothesis: netdata needs to read and write filesystem more which has > exposed filesystem corruption. > > What fs is it? extX or LVM/extX or ? > > Read out the fs metadata and fs check confuguration with: > tune2fs -l /dev/sdaX > Replace X with 0, 1, 2 ... whatever you may have. > > Then triple check these parameters as i am far from from fast internet at > the moment. I have done the following tons of times on normal Linux > machines, but not so much with xen kernel. Is Dom-0 VM fs the same as > underlying kernel? But set fs check interval and mount count with: > > =E2=80=98tune2fs -i 1d /dev/sdaX=E2=80=99 > =E2=80=98tune2fs -c 1 /dev/sdaX=E2=80=99 > > =E2=80=98e2fsck -c -c -C0 -D /dev/sdaX=E2=80=98 > can be used to check for both read and write, output to stdout, and > optimize layout, directory structure, and so on. But this would require > booting from install ISO or qlive media. > > > On Sun, Jul 26, 2020 at 9:51 AM moftah moftah wrote: > >> Hi All, >> We have a problem that is ongoing for more than 1 month >> >> We have several servers running xcp-ng and we are facing kernel oops tha= t >> crash the server >> >> My skill is not enough to debug the issue So need someone to point me to >> the right direction >> the issue is not hardware related >> it occurred on servers that are of different processor , nic and even >> kernel version (all under 4.19) >> >> the stack trace looks like this >> >> [2399526.430672] ALERT: BUG: unable to handle kernel NULL pointer >> dereference at 0000000000000004 >> [2399526.430695] INFO: PGD 447268067 P4D 447268067 PUD 44775f067 PMD 0 >> [2399526.430710] WARN: Oops: 0000 [#1] SMP NOPTI >> [2399526.430720] WARN: CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tainted >> 4.19.108 #1 >> [2399526.430728] WARN: Hardware name: HP ProLiant SL230s Gen8 /, BIO= S >> P75 05/24/2019 >> [2399526.430745] WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140 >> [2399526.430753] WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8b >> 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 88 = d0 >> 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 0a f= 0 ff >> [2399526.430773] WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010246 >> [2399526.430780] WARN: RAX: ffff88842087b900 RBX: 0000000000000001 RCX= : >> 0000000000000000 >> [2399526.430789] WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 RDI= : >> ffff8883de0b9c00 >> [2399526.430801] WARN: RBP: 0000000000000000 R08: 0000000000000000 R09= : >> 0000000000000020 >> [2399526.430811] WARN: R10: 0000000000000000 R11: ffff8883de0b9d40 R12= : >> 0000000000000001 >> [2399526.430823] WARN: R13: ffff8883db210a00 R14: 0000000000000002 R15= : >> ffff8883de0b9c00 >> [2399526.430852] WARN: FS: 00007ffac43fe700(0000) >> GS:ffff888451240000(0000) knlGS:0000000000000000 >> [2399526.430868] WARN: CS: e033 DS: 0000 ES: 0000 CR0: 00000000800500= 33 >> [2399526.430879] WARN: CR2: 0000000000000004 CR3: 000000044ad58000 CR4= : >> 0000000000040660 >> [2399526.430899] WARN: Call Trace: >> [2399526.430914] WARN: __qdisc_run+0xa2/0x4f0 >> [2399526.430928] WARN: ? __switch_to_asm+0x41/0x70 >> [2399526.430940] WARN: net_tx_action+0x148/0x230 >> [2399526.430949] WARN: __do_softirq+0xd1/0x28c >> [2399526.430966] WARN: run_ksoftirqd+0x26/0x40 >> [2399526.430980] WARN: smpboot_thread_fn+0x10e/0x160 >> [2399526.430993] WARN: kthread+0xf8/0x130 >> [2399526.431004] WARN: ? sort_range+0x20/0x20 >> [2399526.431010] WARN: ? kthread_bind+0x10/0x10 >> [2399526.431017] WARN: ret_from_fork+0x35/0x40 >> [2399526.431027] WARN: Modules linked in: act_police cls_basic >> sch_ingress sch_tbf tun rpcsec_gss_krb5 auth_rpcgss oid_registry nfsv4 n= fs >> lockd grace fscache bnx2fc cnic uio fcoe libfcoe libfc scsi_transport_fc >> openvswitch nsh nf_nat_ipv6 nf_nat_ipv4 nf_conncount nf_nat 8021q garp m= rp >> stp llc ipt_REJECT nf_reject_ipv4 dm_multipath xt_tcpudp xt_multiport >> xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter >> sunrpc hid_generic sb_edac intel_powerclamp crct10dif_pclmul crc32_pclmu= l >> ghash_clmulni_intel pcbc dm_mod aesni_intel aes_x86_64 crypto_simd crypt= d >> glue_helper intel_rapl_perf psmouse lpc_ich usbhid hid sg hpilo ipmi_si >> ipmi_devintf ipmi_msghandler acpi_power_meter ip_tables x_tables raid1 >> md_mod sd_mod serio_raw uhci_hcd ahci libahci igb libata ehci_pci ehci_h= cd >> bnx2x mdio libcrc32c mpt3sas >> [2399526.431154] WARN: raid_class scsi_transport_sas scsi_dh_rdac >> scsi_dh_hp_sw scsi_dh_emc scsi_dh_alua scsi_mod ipv6 crc_ccitt >> [2399526.431177] WARN: CR2: 0000000000000004 >> [2399526.431189] WARN: ---[ end trace 32a268c3653eb10c ]--- >> [2399526.431201] WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140 >> [2399526.431212] WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8b >> 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 88 = d0 >> 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 0a f= 0 ff >> [2399526.431238] WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010246 >> [2399526.431247] WARN: RAX: ffff88842087b900 RBX: 0000000000000001 RCX= : >> 0000000000000000 >> [2399526.431260] WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 RDI= : >> ffff8883de0b9c00 >> [2399526.431270] WARN: RBP: 0000000000000000 R08: 0000000000000000 R09= : >> 0000000000000020 >> [2399526.431280] WARN: R10: 0000000000000000 R11: ffff8883de0b9d40 R12= : >> 0000000000000001 >> [2399526.431289] WARN: R13: ffff8883db210a00 R14: 0000000000000002 R15= : >> ffff8883de0b9c00 >> [2399526.431307] WARN: FS: 00007ffac43fe700(0000) >> GS:ffff888451240000(0000) knlGS:0000000000000000 >> [2399526.431319] WARN: CS: e033 DS: 0000 ES: 0000 CR0: 00000000800500= 33 >> [2399526.431331] WARN: CR2: 0000000000000004 CR3: 000000044ad58000 CR4= : >> 0000000000040660 >> [2399526.431355] EMERG: Kernel panic - not syncing: Fatal exception in >> interrupt >> >> >> xen crash analyzer generate many other files as well >> dmesg.kexec.log >> dom0.log ( for each dom ) >> dom0.structures.log for each dom ( for each dom ) >> .... >> lspci-tv.out >> lspci-vv.out >> lspci-vvxxxx.out >> readelf-Wl.out >> readelf-Wn.out >> time-v.out >> xen.log >> xen.pcpu0.stack.log ( for each pcpu) >> ... >> xen-crashdump-analyser.log >> >> the log can be seen from xenlog file as >> Call Trace: >> [ffffffff810014aa] xen_hypercall_kexec_op+0xa/0x20 >> ffffffff81071f85 panic+0x111/0x27c >> ffffffff81027a7f oops_end+0xcf/0xd0 >> ffffffff8105da63 no_context+0x1b3/0x3c0 >> ffffffff816c0223 inet_gro_receive+0x213/0x2b0 >> ffffffff8105e32a __do_page_fault+0xaa/0x4f0 >> ffffffff8162cd44 netif_receive_skb_internal+0x34/0xe0 >> ffffffff81800f6e page_fault+0x1e/0x30 >> ffffffff81663ac9 pfifo_fast_dequeue+0xc9/0x140 >> ffffffff81663f38 __qdisc_run+0xa8/0x4e0 >> ffffffff816290c8 net_tx_action+0x148/0x220 >> ffffffff81a000d1 __softirqentry_text_start+0xd1/0x28c >> ffffffff81077ff6 run_ksoftirqd+0x26/0x40 >> ffffffff8109763e smpboot_thread_fn+0x10e/0x160 >> ffffffff81093b68 kthread+0xf8/0x130 >> ffffffff81097530 smpboot_thread_fn+0/0x160 >> ffffffff81093a70 kthread+0/0x130 >> ffffffff81800215 ret_from_fork+0x35/0x40 >> >> I did use a tool to trace the source code where the issue occure >> ./decode_stacktrace.sh /usr/lib/debug/lib/modules/4.19.108/vmlinux >> /usr/lib/debug/lib/modules/4.19.108/ < ./trace2 > out3 >> >> and this is the output >> >> [ffffffff810014aa] xen_hypercall_kexec_op >> (arch/x86/kernel/.tmp_head_64.o:?) >> ffffffff81071f85 panic (/usr/src/debug/kernel-4.19.19/kernel/panic.c:209= ) >> ffffffff81027a7f oops_end >> (/usr/src/debug/kernel-4.19.19/arch/x86/kernel/dumpstack.c:352) >> ffffffff8105da63 no_context >> (/usr/src/debug/kernel-4.19.19/arch/x86/mm/fault.c:808) >> ffffffff816c0223 inet_gro_receive >> (/usr/src/debug/kernel-4.19.19/include/linux/skbuff.h:2350 >> /usr/src/debug/kernel-4.19.19/net/ipv4/af_inet.c:1495) >> ffffffff8105e32a __do_page_fault >> (/usr/src/debug/kernel-4.19.19/arch/x86/mm/fault.c:1435) >> ffffffff8162cd44 netif_receive_skb_internal >> (/usr/src/debug/kernel-4.19.19/net/core/dev.c:5152) >> ffffffff81800f6e page_fault >> (/usr/src/debug////////kernel-4.19.19/arch/x86/entry/entry_64.S:1204) >> ffffffff81663ac9 pfifo_fast_dequeue >> (/usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:723 >> /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:740 >> /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:747 >> /usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:677) >> ffffffff81663f38 __qdisc_run >> (/usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:283 >> /usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:385 >> /usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:403) >> ffffffff816290c8 net_tx_action >> (/usr/src/debug/kernel-4.19.19/include/linux/seqlock.h:235 >> /usr/src/debug/kernel-4.19.19/include/linux/seqlock.h:388 >> /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:145 >> /usr/src/debug/kernel-4.19.19/include/net/pkt_sched.h:121 >> /usr/src/debug/kernel-4.19.19/net/core/dev.c:4595) >> ffffffff81a000d1 __softirqentry_text_start >> (/usr/src/debug/kernel-4.19.19/kernel/softirq.c:292 >> /usr/src/debug/kernel-4.19.19/include/linux/jump_label.h:138 >> /usr/src/debug/kernel-4.19.19/include/trace/events/irq.h:142 >> /usr/src/debug/kernel-4.19.19/kernel/softirq.c:293) >> ffffffff81077ff6 run_ksoftirqd >> (/usr/src/debug/kernel-4.19.19/arch/x86/include/asm/paravirt.h:799 >> /usr/src/debug/kernel-4.19.19/kernel/softirq.c:654) >> ffffffff8109763e smpboot_thread_fn >> (/usr/src/debug/kernel-4.19.19/kernel/smpboot.c:164) >> ffffffff81093b68 kthread >> (/usr/src/debug/kernel-4.19.19/kernel/kthread.c:246) >> ffffffff81097530 smpboot_thread_fn+0/0x160 >> ffffffff81093a70 kthread+0/0x130 >> ffffffff81800215 ret_from_fork >> (/usr/src/debug////////kernel-4.19.19/arch/x86/entry/entry_64.S:421) >> >> based on that the issue occurred when calling >> _bstats_update >> (& >> bstats -> >> bstats , byte= s >> , packets >> ); >> >> thats as far as i can reach not sure how to debug further to find the >> root cause and fix it >> >> >> --00000000000005f83305ab5fda90 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Rob,

Thanks for looking into it

>Inability to sync would make me = wonder if the filesystem issue. =C2=A0
I rebooted one server to do fsc= k and it was fine
plus the OS is installed in mirrored raid (soft= raid using mdraid) so I dont think it is data corruption issue
<= br>
the hypervisor and dom zero are unnin from mdraid of 2x 200gb= SSDs=C2=A0

netdata is not installed although when= we we installed netdata on some servers in the past we had as well some ke= rnel panics so we removed it and that resolved the issue

still not sure what the issue is=C2=A0

On Sun, Jul 26, 2020 at = 1:04 PM Rob Townley <rob.townle= y@gmail.com> wrote:
We have had crashes on one mach= ine.=C2=A0 Do not have details because i do not have broadband now. =C2=A0<= /div>

Somethings that st= uck out to me.
Inability to sync would make me wonde= r if filesystem issue. =C2=A0
Also wondering if you = installed the netdata package since some of the errors seem to be related t= o statistics?=C2=A0 Our crashes happened after installing netdata but crash= es are only occurring on one machine. =C2=A0 =C2=A0=C2=A0

Hypothesis: =C2=A0netdata needs to read a= nd write filesystem more which has exposed filesystem corruption. =C2=A0

What fs is it? =C2=A0 extX= or LVM/extX or ?

Read o= ut the fs metadata and fs check confuguration with:
= tune2fs -l /dev/sdaX
Replace X with 0, 1, 2 ... = whatever you may have.

T= hen triple check these parameters as i am far from from fast internet at th= e moment. =C2=A0 I have done the following tons of times on normal Linux ma= chines, but not so much with xen kernel.=C2=A0 Is Dom-0 VM fs the same as u= nderlying kernel? =C2=A0 But set fs check interval and mount count with: = =C2=A0

=E2=80=98tune2fs = -i 1d /dev/sdaX=E2=80=99
=E2=80=98tune2fs -c 1 /dev/= sdaX=E2=80=99

=E2=80=98e= 2fsck -c -c -C0 -D /dev/sdaX=E2=80=98 =C2=A0
can be = used to check for both read and write, output to stdout, and optimize layou= t, directory structure, and so on.=C2=A0 But this would require booting fro= m install ISO or qlive media.
=

On Sun, Jul 26, 2020 at 9:51 AM moftah moftah <mofta7y@gmail.com> wrote:
=
Hi= All,
We have a problem that is ongoing for more than 1 month

We have several servers running xcp-ng and we are facing ke= rnel=C2=A0oops that crash the server

My skill is n= ot enough to debug=C2=A0the issue So need someone to point me to the right = direction
the issue is not hardware related
it occurred= =C2=A0on servers that are of different=C2=A0processor , nic and even kernel= version (all under 4.19)

the stack trace looks li= ke this

[2399526.430672] =C2=A0ALERT: BUG: unable = to handle kernel NULL pointer dereference at 0000000000000004
[2399526.4= 30695] =C2=A0 INFO: PGD 447268067 P4D 447268067 PUD 44775f067 PMD 0
[23= 99526.430710] =C2=A0 WARN: Oops: 0000 [#1] SMP NOPTI
[2399526.430720] = =C2=A0 WARN: CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tainted 4.19.108 #1
[2= 399526.430728] =C2=A0 WARN: Hardware name: HP ProLiant SL230s Gen8 =C2=A0 /= , BIOS P75 05/24/2019
[2399526.430745] =C2=A0 WARN: RIP: e030:pfifo_fast= _dequeue+0xc9/0x140
[2399526.430753] =C2=A0 WARN: Code: 50 28 48 8b 4f 5= 8 f7 da 65 01 51 04 48 8b 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 b= e 01 00 00 00 48 03 88 d0 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06= 8b 48 28 01 72 08 48 01 0a f0 ff
[2399526.430773] =C2=A0 WARN: RSP: e02= b:ffffc900400c3de0 EFLAGS: 00010246
[2399526.430780] =C2=A0 WARN: RAX: f= fff88842087b900 RBX: 0000000000000001 RCX: 0000000000000000
[2399526.430= 789] =C2=A0 WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 RDI: ffff8883= de0b9c00
[2399526.430801] =C2=A0 WARN: RBP: 0000000000000000 R08: 000000= 0000000000 R09: 0000000000000020
[2399526.430811] =C2=A0 WARN: R10: 0000= 000000000000 R11: ffff8883de0b9d40 R12: 0000000000000001
[2399526.430823= ] =C2=A0 WARN: R13: ffff8883db210a00 R14: 0000000000000002 R15: ffff8883de0= b9c00
[2399526.430852] =C2=A0 WARN: FS: =C2=A000007ffac43fe700(0000) GS:= ffff888451240000(0000) knlGS:0000000000000000
[2399526.430868] =C2=A0 WA= RN: CS: =C2=A0e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[2399526.4308= 79] =C2=A0 WARN: CR2: 0000000000000004 CR3: 000000044ad58000 CR4: 000000000= 0040660
[2399526.430899] =C2=A0 WARN: Call Trace:
[2399526.430914] = =C2=A0 WARN: =C2=A0__qdisc_run+0xa2/0x4f0
[2399526.430928] =C2=A0 WARN: = =C2=A0? __switch_to_asm+0x41/0x70
[2399526.430940] =C2=A0 WARN: =C2=A0ne= t_tx_action+0x148/0x230
[2399526.430949] =C2=A0 WARN: =C2=A0__do_softirq= +0xd1/0x28c
[2399526.430966] =C2=A0 WARN: =C2=A0run_ksoftirqd+0x26/0x40<= br>[2399526.430980] =C2=A0 WARN: =C2=A0smpboot_thread_fn+0x10e/0x160
[23= 99526.430993] =C2=A0 WARN: =C2=A0kthread+0xf8/0x130
[2399526.431004] =C2= =A0 WARN: =C2=A0? sort_range+0x20/0x20
[2399526.431010] =C2=A0 WARN: =C2= =A0? kthread_bind+0x10/0x10
[2399526.431017] =C2=A0 WARN: =C2=A0ret_from= _fork+0x35/0x40
[2399526.431027] =C2=A0 WARN: Modules linked in: act_pol= ice cls_basic sch_ingress sch_tbf tun rpcsec_gss_krb5 auth_rpcgss oid_regis= try nfsv4 nfs lockd grace fscache bnx2fc cnic uio fcoe libfcoe libfc scsi_t= ransport_fc openvswitch nsh nf_nat_ipv6 nf_nat_ipv4 nf_conncount nf_nat 802= 1q garp mrp stp llc ipt_REJECT nf_reject_ipv4 dm_multipath xt_tcpudp xt_mul= tiport xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filt= er sunrpc hid_generic sb_edac intel_powerclamp crct10dif_pclmul crc32_pclmu= l ghash_clmulni_intel pcbc dm_mod aesni_intel aes_x86_64 crypto_simd cryptd= glue_helper intel_rapl_perf psmouse lpc_ich usbhid hid sg hpilo ipmi_si ip= mi_devintf ipmi_msghandler acpi_power_meter ip_tables x_tables raid1 md_mod= sd_mod serio_raw uhci_hcd ahci libahci igb libata ehci_pci ehci_hcd bnx2x = mdio libcrc32c mpt3sas
[2399526.431154] =C2=A0 WARN: =C2=A0raid_class sc= si_transport_sas scsi_dh_rdac scsi_dh_hp_sw scsi_dh_emc scsi_dh_alua scsi_m= od ipv6 crc_ccitt
[2399526.431177] =C2=A0 WARN: CR2: 0000000000000004[2399526.431189] =C2=A0 WARN: ---[ end trace 32a268c3653eb10c ]---
[239= 9526.431201] =C2=A0 WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140
[23995= 26.431212] =C2=A0 WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8b 57 = 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 88 d0 00 = 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 0a f= 0 ff
[2399526.431238] =C2=A0 WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00= 010246
[2399526.431247] =C2=A0 WARN: RAX: ffff88842087b900 RBX: 00000000= 00000001 RCX: 0000000000000000
[2399526.431260] =C2=A0 WARN: RDX: ffffe8= fffee60a1c RSI: 0000000000000001 RDI: ffff8883de0b9c00
[2399526.431270] = =C2=A0 WARN: RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000= 020
[2399526.431280] =C2=A0 WARN: R10: 0000000000000000 R11: ffff8883de0= b9d40 R12: 0000000000000001
[2399526.431289] =C2=A0 WARN: R13: ffff8883d= b210a00 R14: 0000000000000002 R15: ffff8883de0b9c00
[2399526.431307] =C2= =A0 WARN: FS: =C2=A000007ffac43fe700(0000) GS:ffff888451240000(0000) knlGS:= 0000000000000000
[2399526.431319] =C2=A0 WARN: CS: =C2=A0e033 DS: 0000 E= S: 0000 CR0: 0000000080050033
[2399526.431331] =C2=A0 WARN: CR2: 0000000= 000000004 CR3: 000000044ad58000 CR4: 0000000000040660
[2399526.431355] = =C2=A0EMERG: Kernel panic - not syncing: Fatal exception in interrupt


xen crash analyzer generate many oth= er files as well
dmesg.kexec.log
dom0.log ( for each dom )
dom0.structures.log=C2=A0 for each dom ( for each dom )
....
lspci-tv.out
lspci-vv.out
lspci-vvxx= xx.out
readelf-Wl.out
readelf-Wn.out
time-v.out
xen.log
xen.= pcpu0.stack.log ( for each pcpu)=C2=A0
...
xen-crashdump-analyser.log
<= div>
the log can be seen from xenlog=C2=A0file as=C2=A0
=
=C2=A0Call Trace:
[ffffffff810014aa] xen_hypercall_kexec_op+0xa/0= x20
=C2=A0ffffffff81071f85 =C2=A0panic+0x111/0x27c
=C2=A0ffffffff= 81027a7f =C2=A0oops_end+0xcf/0xd0
=C2=A0ffffffff8105da63 =C2=A0no_cont= ext+0x1b3/0x3c0
=C2=A0ffffffff816c0223 =C2=A0inet_gro_receive+0x213/0x= 2b0
=C2=A0ffffffff8105e32a =C2=A0__do_page_fault+0xaa/0x4f0
=C2= =A0ffffffff8162cd44 =C2=A0netif_receive_skb_internal+0x34/0xe0
=C2=A0f= fffffff81800f6e =C2=A0page_fault+0x1e/0x30
=C2=A0ffffffff81663ac9 =C2= =A0pfifo_fast_dequeue+0xc9/0x140
=C2=A0ffffffff81663f38 =C2=A0__qdisc_= run+0xa8/0x4e0
=C2=A0ffffffff816290c8 =C2=A0net_tx_action+0x148/0x220<= br> =C2=A0ffffffff81a000d1 =C2=A0__softirqentry_text_start+0xd1/0x28c
= =C2=A0ffffffff81077ff6 =C2=A0run_ksoftirqd+0x26/0x40
=C2=A0ffffffff81= 09763e =C2=A0smpboot_thread_fn+0x10e/0x160
=C2=A0ffffffff81093b68 =C2= =A0kthread+0xf8/0x130
=C2=A0ffffffff81097530 =C2=A0smpboot_thread_fn+0= /0x160
=C2=A0ffffffff81093a70 =C2=A0kthread+0/0x130
=C2=A0fffffff= f81800215 =C2=A0ret_from_fork+0x35/0x40

I did = use a tool to trace the source code where the issue occure
./deco= de_stacktrace.sh /usr/lib/debug/lib/modules/4.19.108/vmlinux /usr/lib/debug= /lib/modules/4.19.108/ < ./trace2 > out3

and this is the output

[ffffffff810014aa] xen_hyp= ercall_kexec_op (arch/x86/kernel/.tmp_head_64.o:?)
ffffffff81071f85 pani= c (/usr/src/debug/kernel-4.19.19/kernel/panic.c:209)
ffffffff81027a7f oo= ps_end (/usr/src/debug/kernel-4.19.19/arch/x86/kernel/dumpstack.c:352)
f= fffffff8105da63 no_context (/usr/src/debug/kernel-4.19.19/arch/x86/mm/fault= .c:808)
ffffffff816c0223 inet_gro_receive (/usr/src/debug/kernel-4.19.19= /include/linux/skbuff.h:2350 /usr/src/debug/kernel-4.19.19/net/ipv4/af_inet= .c:1495)
ffffffff8105e32a __do_page_fault (/usr/src/debug/kernel-4.19.19= /arch/x86/mm/fault.c:1435)
ffffffff8162cd44 netif_receive_skb_internal (= /usr/src/debug/kernel-4.19.19/net/core/dev.c:5152)
ffffffff81800f6e page= _fault (/usr/src/debug////////kernel-4.19.19/arch/x86/entry/entry_64.S:1204= )
ffffffff81663ac9 pfifo_fast_dequeue (/usr/src/debug/kernel-4.19.19/inc= lude/net/sch_generic.h:723 /usr/src/debug/kernel-4.19.19/include/net/sch_ge= neric.h:740 /usr/src/debug/kernel-4.19.19/include/net/sch_generic.h:747 /us= r/src/debug/kernel-4.19.19/net/sched/sch_generic.c:677)
ffffffff81663f38= __qdisc_run (/usr/src/debug/kernel-4.19.19/net/sched/sch_generic.c:283 /us= r/src/debug/kernel-4.19.19/net/sched/sch_generic.c:385 /usr/src/debug/kerne= l-4.19.19/net/sched/sch_generic.c:403)
ffffffff816290c8 net_tx_action (/= usr/src/debug/kernel-4.19.19/include/linux/seqlock.h:235 /usr/src/debug/ker= nel-4.19.19/include/linux/seqlock.h:388 /usr/src/debug/kernel-4.19.19/inclu= de/net/sch_generic.h:145 /usr/src/debug/kernel-4.19.19/include/net/pkt_sche= d.h:121 /usr/src/debug/kernel-4.19.19/net/core/dev.c:4595)
ffffffff81a00= 0d1 __softirqentry_text_start (/usr/src/debug/kernel-4.19.19/kernel/softirq= .c:292 /usr/src/debug/kernel-4.19.19/include/linux/jump_label.h:138 /usr/sr= c/debug/kernel-4.19.19/include/trace/events/irq.h:142 /usr/src/debug/kernel= -4.19.19/kernel/softirq.c:293)
ffffffff81077ff6 run_ksoftirqd (/usr/src/= debug/kernel-4.19.19/arch/x86/include/asm/paravirt.h:799 /usr/src/debug/ker= nel-4.19.19/kernel/softirq.c:654)
ffffffff8109763e smpboot_thread_fn (/u= sr/src/debug/kernel-4.19.19/kernel/smpboot.c:164)
ffffffff81093b68 kthre= ad (/usr/src/debug/kernel-4.19.19/kernel/kthread.c:246)
ffffffff81097530= =C2=A0smpboot_thread_fn+0/0x160
ffffffff81093a70 =C2=A0kthread+0/0x130<= br>ffffffff81800215 ret_from_fork (/usr/src/debug////////kernel-4.19.19/arc= h/x86/entry/entry_64.S:421)

based on that the = issue occurred when calling=C2=A0

thats as far as i can reach not sure how to debug further to find the ro= ot cause and fix it=C2=A0


<= /div>
--00000000000005f83305ab5fda90-- From xen-users-bounces@lists.xenproject.org Mon Jul 27 05:56:32 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 27 Jul 2020 05:56:32 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzw6a-0002wj-Jd; Mon, 27 Jul 2020 05:55:20 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzw6Z-0002we-3C for xen-users@lists.xenproject.org; Mon, 27 Jul 2020 05:55:19 +0000 X-Inumbo-ID: bfa46aac-cfcd-11ea-8a71-bc764e2007e4 Received: from mail-pj1-x1043.google.com (unknown [2607:f8b0:4864:20::1043]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id bfa46aac-cfcd-11ea-8a71-bc764e2007e4; Mon, 27 Jul 2020 05:55:18 +0000 (UTC) Received: by mail-pj1-x1043.google.com with SMTP id c6so1896691pje.1 for ; Sun, 26 Jul 2020 22:55:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=SSp+wQ0XdBkVGtbOoEOVss6EYJIHirj5NU4RMyH86hk=; b=h0xl5A/N4nILD8voHRpKLxT94QSLqHz9SWTfNZzFaWR0mCRxgt3h688nUNocn62Cxf HXvjEkZmqo6LQ7OHrCNwaUQZe7SlUFqhm2dDVlblj/SslaulRf4nCth93ITkX9HiroTt Nl33q4Mxz4sZzzOUADGtqPZjNikPw/T+TPxCQb4IcJx5QOFMmIdFP1dhkYauFPLhuYCR ou3knKXrtwlVlLcY3CUUOyTK+LpqP+ZmnhpGrSk+mlaNczNEhKbGNSyMUcn0l7+m0ahr AwjP9Eg8AGuCnceN9DhdJ9Nd2WzwMXVL3UaQauGp3wCxws8aP12dwkfBjyi3BMsdmi/z QAVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=SSp+wQ0XdBkVGtbOoEOVss6EYJIHirj5NU4RMyH86hk=; b=ngpf8/AkNG1++5MUhvlrYepdOq29KboCMuAIxMBvPbdOLSvmRj5bNTnF/pSzCRjmwh Yf1b+jrDI4CvQqfj4sqgxp/6IWupbmmEuGFWrU+uw2Xg8F3IRya+dnfYW6MQX51ZjrxX O4YwJ8CdnLTlzAy4z7FZ1t7y4Jeby6MVfwXSS65+D2xanEJr98rtpquQXVGNoVPT3t1F pUutmitNvKUbiTLWxx1abj0+BAN4Ep/xvsjzVQ8/zq9wQHlTXvDirTmBGOiVEZAOLibd XHnkVYl12uDqScGiu8cbWZT+dAT1rdD7OURAY5Oz06uV7MYvHBvoYO8BhiFzb5BX6mw3 78gg== X-Gm-Message-State: AOAM532W4bD9P1TvntnuaXGrC+RfOWHdSYUO1k1sYvZ6xlFJxpcn648Y zT4oYfJpPN/CYmERO8xygkNOs1i5Ikw= X-Google-Smtp-Source: ABdhPJwB37nVunp+UvNNfAo8Z5l8PqYX/0Y/4RPmZe3TQqplPEpwNeKW3pjpREm007EMu1UaPsxUlg== X-Received: by 2002:a17:90a:498b:: with SMTP id d11mr17962388pjh.129.1595829317203; Sun, 26 Jul 2020 22:55:17 -0700 (PDT) Received: from [192.168.1.35] (fp93c0183f.tkyc626.ap.nuro.jp. [147.192.24.63]) by smtp.gmail.com with ESMTPSA id q17sm15467727pfk.0.2020.07.26.22.55.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 26 Jul 2020 22:55:16 -0700 (PDT) Subject: Re: Newbie fails booting: "Xen is relinquishing VGA console" To: Pierre-Philipp Braun , xen-users@lists.xenproject.org References: <625103f0-0f30-6fe1-1fc1-de597e8da7de@gmail.com> <980cf6f9-8373-aa6e-31ec-4c5a171d2d44@nethence.com> From: Bernd Bausch Message-ID: Date: Mon, 27 Jul 2020 14:55:14 +0900 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <980cf6f9-8373-aa6e-31ec-4c5a171d2d44@nethence.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Well, I solved that problem. It was, of course, entirely due to operator error. The short story is that I use a spare laptop with a dead display to which I connect an HDMI monitor. However, in the UEFI and BIOS parameters the laptop's built-in display was configured as the "boot display" device. There might have been other factors, since that problem didn't manifest itself when booting non-Xen'ed Debian, but I won't investigate that and am happy now after switching to BIOS and selecting HDMI as the boot display. All other suggestions that Pierre-Philipp made are, for the moment, a bit over my head, but I have an environment now that enables me to learn. Thanks! On 7/26/2020 4:39 PM, Pierre-Philipp Braun wrote: >> Trying to boot the Xen kernel, all I get is a dark screen. When I >> remove the "quiet" option from Grub's menu point, I see that the last >> message before blanking the screen is "Xen is relinquishing VGA >> console". > > Is this EFI or legacy BIOS/CSM?  I will assume legacy, much easier. > > Do you see the XEN booting but not the Linux kernel nor the system?  > You don't get a system prompt either? > > Maybe you just need to force output on VGA, in case it goes to serial > port. > > xen.gz argument would be console=vga but you probably don't need that > kernel argument try add console=tty0 > but then you should have a prompt showing up anyways, unless systemD > service mgetty now finds out by itself where to spit? (cray things > happen nowadays) > > At this stage I think you need to play with booting, then will come > XEN and domU guest tuning.  I suggest you try PV and then switch to > PVH with builder = "pvh".  By the way you can even run the dom0 as PVH > (as it is a privileged guest) but you absolutely need to define > `dom0_mem` for that. > > /boot/xen.gz dom0=pvh dom0_mem=1024M,max:8192M loglvl=info noreboot=true > From xen-users-bounces@lists.xenproject.org Mon Jul 27 07:28:51 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 27 Jul 2020 07:28:51 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzxXZ-0002WC-Fo; Mon, 27 Jul 2020 07:27:17 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jzxXX-0002W7-Jv for xen-users@lists.xenproject.org; Mon, 27 Jul 2020 07:27:15 +0000 X-Inumbo-ID: 97a2d69e-cfda-11ea-8a7c-bc764e2007e4 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 97a2d69e-cfda-11ea-8a7c-bc764e2007e4; Mon, 27 Jul 2020 07:27:14 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id E7810AF8A; Mon, 27 Jul 2020 07:27:23 +0000 (UTC) Subject: Re: repeated Kernel oops need help to debug To: moftah moftah , xen-users@lists.xenproject.org References: From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: <58c623cc-886d-ed54-18e5-356309691ea5@suse.com> Date: Mon, 27 Jul 2020 09:27:12 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 26.07.20 17:47, moftah moftah wrote: > Hi All, > We have a problem that is ongoing for more than 1 month > > We have several servers running xcp-ng and we are facing kernel oops > that crash the server > > My skill is not enough to debug the issue So need someone to point me to > the right direction > the issue is not hardware related > it occurred on servers that are of different processor , nic and even > kernel version (all under 4.19) > > the stack trace looks like this > > [2399526.430672]  ALERT: BUG: unable to handle kernel NULL pointer > dereference at 0000000000000004 > [2399526.430695]   INFO: PGD 447268067 P4D 447268067 PUD 44775f067 PMD 0 > [2399526.430710]   WARN: Oops: 0000 [#1] SMP NOPTI > [2399526.430720]   WARN: CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tainted > 4.19.108 #1 > [2399526.430728]   WARN: Hardware name: HP ProLiant SL230s Gen8   /, > BIOS P75 05/24/2019 > [2399526.430745]   WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140 > [2399526.430753]   WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8b > 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 88 > d0 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 > 0a f0 ff > [2399526.430773]   WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010246 > [2399526.430780]   WARN: RAX: ffff88842087b900 RBX: 0000000000000001 > RCX: 0000000000000000 > [2399526.430789]   WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 > RDI: ffff8883de0b9c00 > [2399526.430801]   WARN: RBP: 0000000000000000 R08: 0000000000000000 > R09: 0000000000000020 > [2399526.430811]   WARN: R10: 0000000000000000 R11: ffff8883de0b9d40 > R12: 0000000000000001 > [2399526.430823]   WARN: R13: ffff8883db210a00 R14: 0000000000000002 > R15: ffff8883de0b9c00 > [2399526.430852]   WARN: FS:  00007ffac43fe700(0000) > GS:ffff888451240000(0000) knlGS:0000000000000000 > [2399526.430868]   WARN: CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033 > [2399526.430879]   WARN: CR2: 0000000000000004 CR3: 000000044ad58000 > CR4: 0000000000040660 > [2399526.430899]   WARN: Call Trace: > [2399526.430914]   WARN:  __qdisc_run+0xa2/0x4f0 > [2399526.430928]   WARN:  ? __switch_to_asm+0x41/0x70 > [2399526.430940]   WARN:  net_tx_action+0x148/0x230 > [2399526.430949]   WARN:  __do_softirq+0xd1/0x28c > [2399526.430966]   WARN:  run_ksoftirqd+0x26/0x40 > [2399526.430980]   WARN:  smpboot_thread_fn+0x10e/0x160 > [2399526.430993]   WARN:  kthread+0xf8/0x130 > [2399526.431004]   WARN:  ? sort_range+0x20/0x20 > [2399526.431010]   WARN:  ? kthread_bind+0x10/0x10 > [2399526.431017]   WARN:  ret_from_fork+0x35/0x40 I wonder whether you are missing all fixes for commit 021a17ed796b which went into kernel 4.18. It needs following fixes on top: d518d2ed8640 (went into 5.4), 90b2be27bb0e (went into 5.5). From the backtrace I really doubt this is a Xen problem, BTW. Maybe running under Xen makes the problem more likely due to different timing. Juergen From xen-users-bounces@lists.xenproject.org Mon Jul 27 18:36:50 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 27 Jul 2020 18:36:50 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k07xe-0006WK-PA; Mon, 27 Jul 2020 18:34:54 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k07xd-0006WF-It for xen-users@lists.xenproject.org; Mon, 27 Jul 2020 18:34:53 +0000 X-Inumbo-ID: dbe65648-d037-11ea-a7d6-12813bfff9fa Received: from cmta18.telus.net (unknown [209.171.16.91]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id dbe65648-d037-11ea-a7d6-12813bfff9fa; Mon, 27 Jul 2020 18:34:52 +0000 (UTC) Received: from [192.168.2.13] ([173.181.74.129]) by cmsmtp with SMTP id 07xakMLxuqUs307xbkX4qU; Mon, 27 Jul 2020 12:34:51 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telus.net; s=neo; t=1595874891; bh=0MuTb/6tCudaFano3kslA4leJPLnamPl0cxJHMwSojI=; h=Subject:To:References:From:Date:In-Reply-To; b=DGEEc0P2Fm9/ffxlN00RgnQd6P/LjjzIotvzVnt8EN0ZIOqVJioFneDzV04vLN1VX dxegOw7aQf7q4xad/dcPlf8yYruVpl53wbqsBMyQe0Xav0L00VojlqFt7voz6c5yKp 8PgCjNYB0h2lM+ZmM3H5qeLBWtkAqe+4NRqaPi30ggE9wtQJqrSQhaKixWnDaFn17F /2TS/4JFVPTl19r9rFSGpQuy6JVzbcqEgG8H866h0BJeweekXxV3/ONj/Z8/MLNwcH 0kEEshGdENhsKAEaDx1xlVXAI/bQ4LCD+rxIVI3zZ1enyrkVg2vQHTIzBLl+AnW7ej RMGs3FNn519ng== X-Telus-Authed: ZGF2ZWhpbGxAdGVsdXMubmV0 X-Authority-Analysis: v=2.3 cv=Mo8sFFSe c=1 sm=1 tr=0 a=dDDs8EMPbAqg94jd+XLA8Q==:117 a=dDDs8EMPbAqg94jd+XLA8Q==:17 a=IkcTkHD0fZMA:10 a=ZxZeu8lxglWjefHT6E0A:9 a=QEXdDO2ut3YA:10 Subject: Re: Newbie fails booting: "Xen is relinquishing VGA console" To: xen-users@lists.xenproject.org References: <625103f0-0f30-6fe1-1fc1-de597e8da7de@gmail.com> <980cf6f9-8373-aa6e-31ec-4c5a171d2d44@nethence.com> From: Dave Hill Message-ID: Date: Mon, 27 Jul 2020 11:34:49 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-CMAE-Envelope: MS4wfNnLSEXsI17u0589TbqWESanuaAzJTL8oolrLoR8aZy8BvhZ015RmBKMTHJFoXz7J635KeQO9k6rbz8bX141amlJWavMVRStcwmRfVV+MhyChpBLcHFZ ssSGzJLQDSHN5DmYL7Of7roqV7IT0g16ata80ayMCXx2vnBHHn+Sf05kCralGYC2IknRTdibjLrKvA== X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 2020-07-26 10:55 p.m., Bernd Bausch wrote: > Well, I solved that problem. It was, of course, entirely due to > operator error. The short story is that I use a spare laptop with a > dead display to which I connect an HDMI monitor. However, in the UEFI > and BIOS parameters the laptop's built-in display was configured as > the "boot display" device. > > There might have been other factors, since that problem didn't > manifest itself when booting non-Xen'ed Debian, but I won't > investigate that and am happy now after switching to BIOS and > selecting HDMI as the boot display. > > All other suggestions that Pierre-Philipp made are, for the moment, a > bit over my head, but I have an environment now that enables me to learn. > > Thanks! > > On 7/26/2020 4:39 PM, Pierre-Philipp Braun wrote: > >>> Trying to boot the Xen kernel, all I get is a dark screen. When I >>> remove the "quiet" option from Grub's menu point, I see that the >>> last message before blanking the screen is "Xen is relinquishing VGA >>> console". >> >> Is this EFI or legacy BIOS/CSM?  I will assume legacy, much easier. >> >> Do you see the XEN booting but not the Linux kernel nor the system?  >> You don't get a system prompt either? >> >> Maybe you just need to force output on VGA, in case it goes to serial >> port. >> >> xen.gz argument would be console=vga but you probably don't need that >> kernel argument try add console=tty0 >> but then you should have a prompt showing up anyways, unless systemD >> service mgetty now finds out by itself where to spit? (cray things >> happen nowadays) >> >> At this stage I think you need to play with booting, then will come >> XEN and domU guest tuning.  I suggest you try PV and then switch to >> PVH with builder = "pvh".  By the way you can even run the dom0 as >> PVH (as it is a privileged guest) but you absolutely need to define >> `dom0_mem` for that. >> >> /boot/xen.gz dom0=pvh dom0_mem=1024M,max:8192M loglvl=info noreboot=true >> Glad to hear you figured it out. I did some editing of the Beginners Guide a few years ago. I'd be grateful to hear about any other difficulties you ran into getting it running or places where the text could be clearer. David From xen-users-bounces@lists.xenproject.org Mon Jul 27 23:11:06 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 27 Jul 2020 23:11:06 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k0CFX-0004gW-PI; Mon, 27 Jul 2020 23:09:39 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k07Oe-0003DB-0a for xen-users@lists.xenproject.org; Mon, 27 Jul 2020 17:58:44 +0000 X-Inumbo-ID: cf04cf2c-d032-11ea-8add-bc764e2007e4 Received: from mail-io1-xd2a.google.com (unknown [2607:f8b0:4864:20::d2a]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id cf04cf2c-d032-11ea-8add-bc764e2007e4; Mon, 27 Jul 2020 17:58:43 +0000 (UTC) Received: by mail-io1-xd2a.google.com with SMTP id d18so17943677ion.0 for ; Mon, 27 Jul 2020 10:58:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=UsnncnCAZJdZJuYxrF1oIpJ7L78WQxaed/DjDH/2yvo=; b=N13Vsx5pcPTIBHyPIMO3AE4/660mPkmKS0LCsEPpzPZ6nKPf4uaNWpvbSXirpmxe94 4CSVAaz36j36jbCvTH5NSiSpwiYcDNAGCu5twE6XjRN7NufrgRD4mEJKKLZiPfRo72/C 0kGzrWYo1ePkCgXjwlsyX6ulCJtfE2wlgL6FcWw6R00gzoQEDyJOpoWxLrr9eoMSY2rO /BnpQpBiTwqt5ryQmzrQd1zWAXa7WLTuOIAnTGyYZ32+llCzXxM981QoUvPN/LdNARDu AXBxmVL+i9HeM7a8of7p7/HJSd0IIq0x1Qam0iN7ytAyl+1EVu0DEk2M6squFInVjebx 2mGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=UsnncnCAZJdZJuYxrF1oIpJ7L78WQxaed/DjDH/2yvo=; b=QhCYVO30WrF2z1zh4/pCNVeG4GgXg2cb2PamTB7qWhD3GowzWUvrSDKnQkBaAC9POV CwKWEC7x8uYqxWGo7S9obnegJmA+Zj800j+Wup3tyiyx9D0FmWAqHozj8u8DRm2Q01Ae FeJJLe31VxzJu+SAgMBJxq9eoA8k8SV8lEav+DXGBtO+DavcAuaBg2aZDIGnkuViOOb5 gMR3kErDgI9nqOSljuu1C0hmcaxdx3Zy3ej8DrT/r+G5egHO61meKWj95CnV7pniwAHj aq+YEdWp4h5iks8/nswCef3sTPgvWwRs8AS7ZXOhThQA/kt4fnzHEqGE0OxK7dWwHmRN r9FQ== X-Gm-Message-State: AOAM532wE1QA7Cp251OTxe6PnSsdkhn4R7FrXzC23rb9mcHK6Q5JRE8T 1+e77NSPluZhXecqUU/lu5rLfN0t0/sElZzBLXBZvA== X-Google-Smtp-Source: ABdhPJxxTZR48IfrOr2r0GFzF1kMZSJ4NXHFMq8Broqj+CEGoHWHRqPwyYY9tnSGPpc3mihdrfC21eDwPKb4DFEPaPg= X-Received: by 2002:a05:6638:3bb:: with SMTP id z27mr11373280jap.0.1595872722135; Mon, 27 Jul 2020 10:58:42 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a02:3404:0:0:0:0:0 with HTTP; Mon, 27 Jul 2020 10:58:41 -0700 (PDT) From: Pry Mar Date: Mon, 27 Jul 2020 10:58:41 -0700 Message-ID: Subject: building grub-2.05 with Xen support in C8 versus Buster, looking at gntdev.h To: xen-users Content-Type: text/plain; charset="UTF-8" X-Mailman-Approved-At: Mon, 27 Jul 2020 23:09:39 +0000 X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" Hello xen-users, http://git.savannah.gnu.org/cgit/grub.git/ I'm doing a build of latest grub-2.05 with the goal of making the pvgrub2 images for x86_64-xen and i386-xen_pvh. These can be used to boot domU VM in a variety of ways: from root symlinks, grub legacy configs, or grub2 configs especially for pv and pvh types. Pvgrub2 images from Buster: grub-i386-qemu.bin grub-i386-xen.bin grub-i386-xen_pvh.bin grub-x86_64-xen.bin The images made in C8 worked as desired and gave useful output. The Buster images failed silently. The C8 had build had hardening undefined, so I tried that in Buster with no help. What got success with Buster was noticing that the xen devel headers were not the same with C8. // headers in Buster pbdeps$ sudo ls -al /usr/include/xen/ total 36 drwxr-xr-x 2 root root 4096 Jun 8 13:55 . drwxr-xr-x 33 root root 4096 Jun 8 13:56 .. -rw-r--r-- 1 root root 3553 Apr 29 02:38 evtchn.h -rw-r--r-- 1 root root 2619 Apr 29 02:38 gntalloc.h -rw-r--r-- 1 root root 10647 Apr 29 02:38 gntdev.h -rw-r--r-- 1 root root 4206 Apr 29 02:38 privcmd.h //headers in C8 (all same) -rw-r--r-- 1 root root 7322 Feb 4 18:09 gntdev.h Owners of gntdev.h // gntdev.h owner on C8 mockbuild@c80pv:~$ sudo rpm -qf /usr/include/xen/gntdev.h kernel-headers-4.18.0-147.5.1.el8_1.x86_64 // owner on Buster /pbdeps$ sudo dpkg -S /usr/include/xen/gntdev.h linux-libc-dev:amd64: /usr/include/xen/gntdev.h Since 2 years ago I was told that the Xen headers were already installed with the OS and there is no need to install any supporting xen-devel package. Swapping in the C8 gntdev.h was a desperate move, but it got the job done. What else could I do to avoid a bad gntdev.h in Buster? cheers, From xen-users-bounces@lists.xenproject.org Wed Jul 29 14:48:02 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 29 Jul 2020 14:48:02 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k0nLg-00068J-3h; Wed, 29 Jul 2020 14:46:28 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k0nLf-00068E-8e for xen-users@lists.xenproject.org; Wed, 29 Jul 2020 14:46:27 +0000 X-Inumbo-ID: 4625cbce-d1aa-11ea-8c7e-bc764e2007e4 Received: from mail-ej1-x635.google.com (unknown [2a00:1450:4864:20::635]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 4625cbce-d1aa-11ea-8c7e-bc764e2007e4; Wed, 29 Jul 2020 14:46:24 +0000 (UTC) Received: by mail-ej1-x635.google.com with SMTP id kq25so11686126ejb.3 for ; Wed, 29 Jul 2020 07:46:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=fkZL27gxJkK1Mz5/ZNr6EVzW4fsb3OPkKcSEV60L5iU=; b=ZECKYuGliCR/WstBv0hq/YmuUBJd2s8Sr70njVZJN7ac3Wk8RKd+6gQ3ICxUF2zI/F 3gju71I+v5vPYay2QDKKFJf8Z2SWMieUUq3Jl0A3/Tzl1+rRb7ZRWeudSGDCFZOW1x0J 90vwcUFeB0vL7/DLf0TX/esKRlDYgiVnxD+Xf8MkPt2JhO7qohzGsQUCwh6QG2n/i86H TjSTbIB9ueFIqO/OQ+ptsu3sLy9pXPd15W92gu5hcsBrVAHI5W7jiBKXPTd+HebNYOKd VmsxuSxUwY8y51UFmx1HYbBzj1RIwCRRbZ1Zjh4wyQJRdlqlBfVA26Hl8rszLtMWX9iU UvRA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=fkZL27gxJkK1Mz5/ZNr6EVzW4fsb3OPkKcSEV60L5iU=; b=Ghd81FniTXV8u5QuoKcam0365SOkNGu2V5YD/AdSTZD3vCKSLlN/oQ/eXHhuE98xQl I0ZsTAMZgD5/u1oCUuEtq7ZHxMfs3pwT2Np10A1i+CLVsjExn42FSM70Q3a5ZS4rjvkj y/I4PIHDS2alCUEC1cd8ZhKiN5+rxEl79y5e3BNSJT4o0IpZQOXj4jlAJ0gIQvYDzCb9 BjGQh4+h5btqTZzH0993GzF8TOloWUoEIwWcJqhrLyCL7kWU6IrFaF59eAxSdz4NJ9Sn JmV/alBQ/rAwis1AEO2AAWGm5Ms4euna+6qoTQZVGY71o4r+tnJFQ/QGD5LojT6nEtYp MWeQ== X-Gm-Message-State: AOAM5313BXwfhhPJEAivvG/4vGyFC1yzIxkygdkBGzmI5GjHrk4WCJee fE9MwUqmO2ugKNkR1V700gaHWvnGoe+ygqVRKFtBTROM/oY= X-Google-Smtp-Source: ABdhPJyEV7Jvvi9VU6UOj9f/T529GxPJK29aEpc2S+vtuz3S1nXs0qbsuNygi/ioOgZaPsII4SApmO/wGktoU1+kuF4= X-Received: by 2002:a17:906:454e:: with SMTP id s14mr18445557ejq.147.1596033983148; Wed, 29 Jul 2020 07:46:23 -0700 (PDT) MIME-Version: 1.0 From: AshishKumar Mishra Date: Wed, 29 Jul 2020 20:16:11 +0530 Message-ID: Subject: Sample backend/frontend driver To: xen-users@lists.xenproject.org Content-Type: multipart/alternative; boundary="0000000000009d769105ab959e44" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --0000000000009d769105ab959e44 Content-Type: text/plain; charset="UTF-8" Hi All , I am starting with Xen for internal evaluation. - Can team share some input / pointers to understand the architecture / template to understand the frontend or backend driver of xen - I had cloned the latest version of xen code ( which is 4.13 ) But could not find any usage of * xenbus_register_frontend / xenbus_register_backend* $ grep -nisr xen-4.13.1/* -e 'xenbus_register_frontend' ( No result ) $ grep -nisr xen-4.13.1/* -e 'xenbus_register_backend' ( No result ) I was going through https://wiki.xen.org/wiki/Introduction_to_Xen_3.x to understand the binding of the frontend / backend driver - My aim was to understand an existing code for frontend & backend and write an hello-world kind of module. Please do let me know if I am missing anything here or doing completely wrong here . Thanks , Ashish . --0000000000009d769105ab959e44 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi All ,
I am starting with Xen for in= ternal evaluation.

- Can team share some inpu= t / pointers to understand the=C2=A0
=C2=A0=C2=A0 architecture / = template to understand the frontend or backend driver of xen


- I had cloned the latest version of xen cod= e ( which is 4.13 )
=C2=A0 But could not find any usage of <= b>
=C2=A0 xenbus_register_frontend / xenbus_register_b= ackend
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= $ grep -nisr xen-4.13.1/* -e 'xenbus_register_frontend'=C2=A0 ( No= result )
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 $ grep = -nisr xen-4.13.1/* -e 'xenbus_register_backend' ( No result )
= <= div>
Thanks ,
Ashish .




--0000000000009d769105ab959e44-- From xen-users-bounces@lists.xenproject.org Wed Jul 29 15:01:16 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 29 Jul 2020 15:01:16 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k0nZH-0007xA-0z; Wed, 29 Jul 2020 15:00:31 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k0nZG-0007x4-Ll for xen-users@lists.xenproject.org; Wed, 29 Jul 2020 15:00:30 +0000 X-Inumbo-ID: 3de0f3c4-d1ac-11ea-aa08-12813bfff9fa Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 3de0f3c4-d1ac-11ea-aa08-12813bfff9fa; Wed, 29 Jul 2020 15:00:29 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 72222AC85; Wed, 29 Jul 2020 15:00:40 +0000 (UTC) Subject: Re: Sample backend/frontend driver To: AshishKumar Mishra , xen-users@lists.xenproject.org References: From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: <8ae363e0-b223-3a6a-589a-01233822031a@suse.com> Date: Wed, 29 Jul 2020 17:00:27 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" On 29.07.20 16:46, AshishKumar Mishra wrote: > Hi All , > I am starting with Xen for internal evaluation. > > - Can team share some input / pointers to understand the >    architecture / template to understand the frontend or backend driver > of xen > > > - I had cloned the latest version of xen code ( which is 4.13 ) >   But could not find any usage of * > * > *  xenbus_register_frontend / xenbus_register_backend* >           $ grep -nisr xen-4.13.1/* -e 'xenbus_register_frontend'  ( No > result ) >           $ grep -nisr xen-4.13.1/* -e 'xenbus_register_backend' ( No > result ) >   I was going through https://wiki.xen.org/wiki/Introduction_to_Xen_3.x >   to understand the binding of the frontend / backend driver > - My aim was to understand an existing code for frontend & backend >   and write an hello-world kind of module. > Please do let me know if I am missing anything here or doing completely > wrong here . The frontend and backend drivers are not part of Xen, but of the guests containing the backends (usually dom0) or the frontends. So you have to look e.g. into The Linux kernel sources where you'll find both, backends and frontends. There are some backends in qemu, too. And then there are unikernels like mini-os and unikraft containing frontends. Juergen From xen-users-bounces@lists.xenproject.org Wed Jul 29 15:45:08 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 29 Jul 2020 15:45:08 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k0oFy-0003B4-4S; Wed, 29 Jul 2020 15:44:38 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k0oFw-0003Az-5i for xen-users@lists.xenproject.org; Wed, 29 Jul 2020 15:44:36 +0000 X-Inumbo-ID: 668ce368-d1b2-11ea-8c8c-bc764e2007e4 Received: from mail-wm1-x341.google.com (unknown [2a00:1450:4864:20::341]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 668ce368-d1b2-11ea-8c8c-bc764e2007e4; Wed, 29 Jul 2020 15:44:34 +0000 (UTC) Received: by mail-wm1-x341.google.com with SMTP id 3so3447062wmi.1 for ; Wed, 29 Jul 2020 08:44:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; 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Wed, 29 Jul 2020 08:44:33 -0700 (PDT) MIME-Version: 1.0 References: <58c623cc-886d-ed54-18e5-356309691ea5@suse.com> In-Reply-To: <58c623cc-886d-ed54-18e5-356309691ea5@suse.com> From: moftah moftah Date: Wed, 29 Jul 2020 11:44:24 -0400 Message-ID: Subject: Re: repeated Kernel oops need help to debug To: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Content-Type: multipart/alternative; boundary="000000000000ae402805ab966e1a" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xenproject.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --000000000000ae402805ab966e1a Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Juergen, This seems very related to my issue but I wonder why the fix was not backtracked to all versions why i was only added to 4.18 and 5.4 branches and ignored the 4.19 branch I could try to add the patch manually (if it works ) in 4.19 branch and test it locally On Mon, Jul 27, 2020 at 3:27 AM J=C3=BCrgen Gro=C3=9F wro= te: > On 26.07.20 17:47, moftah moftah wrote: > > Hi All, > > We have a problem that is ongoing for more than 1 month > > > > We have several servers running xcp-ng and we are facing kernel oops > > that crash the server > > > > My skill is not enough to debug the issue So need someone to point me t= o > > the right direction > > the issue is not hardware related > > it occurred on servers that are of different processor , nic and even > > kernel version (all under 4.19) > > > > the stack trace looks like this > > > > [2399526.430672] ALERT: BUG: unable to handle kernel NULL pointer > > dereference at 0000000000000004 > > [2399526.430695] INFO: PGD 447268067 P4D 447268067 PUD 44775f067 PMD = 0 > > [2399526.430710] WARN: Oops: 0000 [#1] SMP NOPTI > > [2399526.430720] WARN: CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tainted > > 4.19.108 #1 > > [2399526.430728] WARN: Hardware name: HP ProLiant SL230s Gen8 /, > > BIOS P75 05/24/2019 > > [2399526.430745] WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140 > > [2399526.430753] WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 04 48 8= b > > 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 88 > > d0 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08 48 01 > > 0a f0 ff > > [2399526.430773] WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010246 > > [2399526.430780] WARN: RAX: ffff88842087b900 RBX: 0000000000000001 > > RCX: 0000000000000000 > > [2399526.430789] WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000001 > > RDI: ffff8883de0b9c00 > > [2399526.430801] WARN: RBP: 0000000000000000 R08: 0000000000000000 > > R09: 0000000000000020 > > [2399526.430811] WARN: R10: 0000000000000000 R11: ffff8883de0b9d40 > > R12: 0000000000000001 > > [2399526.430823] WARN: R13: ffff8883db210a00 R14: 0000000000000002 > > R15: ffff8883de0b9c00 > > [2399526.430852] WARN: FS: 00007ffac43fe700(0000) > > GS:ffff888451240000(0000) knlGS:0000000000000000 > > [2399526.430868] WARN: CS: e033 DS: 0000 ES: 0000 CR0: > 0000000080050033 > > [2399526.430879] WARN: CR2: 0000000000000004 CR3: 000000044ad58000 > > CR4: 0000000000040660 > > [2399526.430899] WARN: Call Trace: > > [2399526.430914] WARN: __qdisc_run+0xa2/0x4f0 > > [2399526.430928] WARN: ? __switch_to_asm+0x41/0x70 > > [2399526.430940] WARN: net_tx_action+0x148/0x230 > > [2399526.430949] WARN: __do_softirq+0xd1/0x28c > > [2399526.430966] WARN: run_ksoftirqd+0x26/0x40 > > [2399526.430980] WARN: smpboot_thread_fn+0x10e/0x160 > > [2399526.430993] WARN: kthread+0xf8/0x130 > > [2399526.431004] WARN: ? sort_range+0x20/0x20 > > [2399526.431010] WARN: ? kthread_bind+0x10/0x10 > > [2399526.431017] WARN: ret_from_fork+0x35/0x40 > > I wonder whether you are missing all fixes for commit 021a17ed796b > which went into kernel 4.18. It needs following fixes on top: > > d518d2ed8640 (went into 5.4), 90b2be27bb0e (went into 5.5). > > From the backtrace I really doubt this is a Xen problem, BTW. Maybe > running under Xen makes the problem more likely due to different > timing. > > > Juergen > --000000000000ae402805ab966e1a Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi=C2=A0 Juergen,

This seems very related to my issue
b= ut I wonder why the fix was not backtracked to all versions why i was only = added to 4.18 and 5.4 branches and ignored the 4.19 branch

I could try to add the patch manually (if it works ) in 4.19 branc= h and test it locally

On Mon, Jul 27, 2020 at 3:27 AM J=C3=BCrgen Gro= =C3=9F <jgross@suse= .com> wrote:
On 26.07.20 17:47, moftah moftah wrote:
> Hi All,
> We have a problem that is ongoing for more than 1 month
>
> We have several servers running xcp-ng and we are facing kernel=C2=A0o= ops
> that crash the server
>
> My skill is not enough to debug=C2=A0the issue So need someone to poin= t me to
> the right direction
> the issue is not hardware related
> it occurred=C2=A0on servers that are of different=C2=A0processor , nic= and even
> kernel version (all under 4.19)
>
> the stack trace looks like this
>
> [2399526.430672] =C2=A0ALERT: BUG: unable to handle kernel NULL pointe= r
> dereference at 0000000000000004
> [2399526.430695] =C2=A0 INFO: PGD 447268067 P4D 447268067 PUD 44775f06= 7 PMD 0
> [2399526.430710] =C2=A0 WARN: Oops: 0000 [#1] SMP NOPTI
> [2399526.430720] =C2=A0 WARN: CPU: 1 PID: 17 Comm: ksoftirqd/1 Not tai= nted
> 4.19.108 #1
> [2399526.430728] =C2=A0 WARN: Hardware name: HP ProLiant SL230s Gen8 = =C2=A0 /,
> BIOS P75 05/24/2019
> [2399526.430745] =C2=A0 WARN: RIP: e030:pfifo_fast_dequeue+0xc9/0x140<= br> > [2399526.430753] =C2=A0 WARN: Code: 50 28 48 8b 4f 58 f7 da 65 01 51 0= 4 48 8b
> 57 50 65 48 03 15 11 64 99 7e 8b 88 cc 00 00 00 be 01 00 00 00 48 03 8= 8
> d0 00 00 00 <66> 83 79 04 00 74 04 0f b7 71 06 8b 48 28 01 72 08= 48 01
> 0a f0 ff
> [2399526.430773] =C2=A0 WARN: RSP: e02b:ffffc900400c3de0 EFLAGS: 00010= 246
> [2399526.430780] =C2=A0 WARN: RAX: ffff88842087b900 RBX: 0000000000000= 001
> RCX: 0000000000000000
> [2399526.430789] =C2=A0 WARN: RDX: ffffe8fffee60a1c RSI: 0000000000000= 001
> RDI: ffff8883de0b9c00
> [2399526.430801] =C2=A0 WARN: RBP: 0000000000000000 R08: 0000000000000= 000
> R09: 0000000000000020
> [2399526.430811] =C2=A0 WARN: R10: 0000000000000000 R11: ffff8883de0b9= d40
> R12: 0000000000000001
> [2399526.430823] =C2=A0 WARN: R13: ffff8883db210a00 R14: 0000000000000= 002
> R15: ffff8883de0b9c00
> [2399526.430852] =C2=A0 WARN: FS: =C2=A000007ffac43fe700(0000)
> GS:ffff888451240000(0000) knlGS:0000000000000000
> [2399526.430868] =C2=A0 WARN: CS: =C2=A0e033 DS: 0000 ES: 0000 CR0: 00= 00000080050033
> [2399526.430879] =C2=A0 WARN: CR2: 0000000000000004 CR3: 000000044ad58= 000
> CR4: 0000000000040660
> [2399526.430899] =C2=A0 WARN: Call Trace:
> [2399526.430914] =C2=A0 WARN: =C2=A0__qdisc_run+0xa2/0x4f0
> [2399526.430928] =C2=A0 WARN: =C2=A0? __switch_to_asm+0x41/0x70
> [2399526.430940] =C2=A0 WARN: =C2=A0net_tx_action+0x148/0x230
> [2399526.430949] =C2=A0 WARN: =C2=A0__do_softirq+0xd1/0x28c
> [2399526.430966] =C2=A0 WARN: =C2=A0run_ksoftirqd+0x26/0x40
> [2399526.430980] =C2=A0 WARN: =C2=A0smpboot_thread_fn+0x10e/0x160
> [2399526.430993] =C2=A0 WARN: =C2=A0kthread+0xf8/0x130
> [2399526.431004] =C2=A0 WARN: =C2=A0? sort_range+0x20/0x20
> [2399526.431010] =C2=A0 WARN: =C2=A0? kthread_bind+0x10/0x10
> [2399526.431017] =C2=A0 WARN: =C2=A0ret_from_fork+0x35/0x40

I wonder whether you are missing all fixes for commit 021a17ed796b
which went into kernel 4.18. It needs following fixes on top:

d518d2ed8640 (went into 5.4), 90b2be27bb0e (went into 5.5).

=C2=A0From the backtrace I really doubt this is a Xen problem, BTW. Maybe running under Xen makes the problem more likely due to different
timing.


Juergen
--000000000000ae402805ab966e1a-- From xen-users-bounces@lists.xenproject.org Thu Jul 30 05:59:14 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 30 Jul 2020 05:59:14 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k11ZX-00030P-8r; Thu, 30 Jul 2020 05:57:43 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k11ZV-00030K-Ri for xen-users@lists.xenproject.org; Thu, 30 Jul 2020 05:57:41 +0000 X-Inumbo-ID: 941f1b4e-d229-11ea-8d14-bc764e2007e4 Received: from mail-qk1-x729.google.com (unknown [2607:f8b0:4864:20::729]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 941f1b4e-d229-11ea-8d14-bc764e2007e4; Thu, 30 Jul 2020 05:57:41 +0000 (UTC) Received: by mail-qk1-x729.google.com with SMTP id b79so24591081qkg.9 for ; Wed, 29 Jul 2020 22:57:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=AQDrQ3pzSwFG8LIp0EM5U8IHimMNpvOD1yKbz2FboEo=; b=CIi8XEiPNJtEfwmXW9gn6XOV032NTT16ILYXCjeMuRoneEUKFvnCvM48USTNlrFWp9 m/PXAo4wcDPDjKXRVx/vh5w35R08OAiOoUePZdsJn4W++V6P0XLbd/ugrim27TWfXNQ/ 2kM+Fjk3StbTpMo0R67dUdgrIQdonLK0mUUD93v8NfDfCwiDEpwttvarTjFi6aVl9fHQ jeIHPVVCTXujMm37qF3CBdfyb9rN5xM0c6ydzh7fILTid/btI8mF8k9XPrGsLWJHrGRU Ly9arIDa1bSp68HidKeIeUBiuIXAsm44w03hJFRIqz27oeOpSv5TzXwNcCBOzmTEhLmv ZDIg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=AQDrQ3pzSwFG8LIp0EM5U8IHimMNpvOD1yKbz2FboEo=; b=jvqKcgQ3jatqLnPdgv9zT2+SWMRD2bGPNjpaC33RVa5s5vz38/FGXgBdw+4lsNm6cL 8wvq4mqvMnfwLuAGCwumBCKqoVRt8AQetl7zdUjuW1Mp9eg47rdMUL3DTwEPxlILEhU1 x6rTIBofefleUtaHuuS0Fl+fxgFugXeflFyR3edxNFkrCGDnBADgFcFWDzGSjI2a5Ccu vgkTwD3Xcfqi6WbreCwMqqgY2MeK0wMfNr90hRtB7omZxpoQVunsJd9Sy+J8R3zC2Esh v9czoq7wPdQGS3cSOTHZfLPutZ1yh8771lf9CsiSiSywQuV7TCknqgAloLwZUZiBPQ7M uAeQ== X-Gm-Message-State: AOAM532r1O2Djpywi2/WgbnsgIWN9B3uLgfpkhSGTjLSEWf1pl+30ANW YX1wO3g5/BW+Ri0Jvhxe1r44sHWkqmNid12F9EhrkRn7 X-Google-Smtp-Source: ABdhPJy0wLUgqyXJq8FIf+whV6Dmo+Z+2OjcgxMiLlwR16bTTch5886WcHJuMWmWG2jRxrnhKLi0XGR/tkChotT4uaA= X-Received: by 2002:a37:a354:: with SMTP id m81mr36523861qke.277.1596088660521; Wed, 29 Jul 2020 22:57:40 -0700 (PDT) MIME-Version: 1.0 References: <8ae363e0-b223-3a6a-589a-01233822031a@suse.com> In-Reply-To: <8ae363e0-b223-3a6a-589a-01233822031a@suse.com> From: AshishKumar Mishra Date: Thu, 30 Jul 2020 11:27:28 +0530 Message-ID: Subject: Re: Sample backend/frontend driver To: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Content-Type: multipart/alternative; boundary="000000000000a3f50105aba25947" X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-users@lists.xenproject.org Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --000000000000a3f50105aba25947 Content-Type: text/plain; charset="UTF-8" Thanks for pointer , will look into it. Ashish --000000000000a3f50105aba25947 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thanks for pointer , will look into it.
=
Ashish=C2=A0
--000000000000a3f50105aba25947-- From xen-users-bounces@lists.xenproject.org Thu Jul 30 17:09:37 2020 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 30 Jul 2020 17:09:37 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k1C2h-0003ZW-7A; Thu, 30 Jul 2020 17:08:31 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k1C2e-0003ZP-I3 for xen-users@lists.xenproject.org; Thu, 30 Jul 2020 17:08:30 +0000 X-Inumbo-ID: 480f98a6-d287-11ea-8daf-bc764e2007e4 Received: from mo4-p01-ob.smtp.rzone.de (unknown [85.215.255.51]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 480f98a6-d287-11ea-8daf-bc764e2007e4; Thu, 30 Jul 2020 17:08:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1596128905; s=strato-dkim-0002; d=aepfle.de; h=In-Reply-To:References:Reply-To:Message-ID:Subject:Cc:To:From:Date: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=Hi3S9S/ehQfzjzRLk65azlmL7NUmISCnAQ6cLHWuke4=; b=qPWgnlQ6pzi7uPrQ8H/vtaDTDt+4YaDfk0w1qdi8x02mic6j1Fvtu9n+bhtNWdH5X+ 5wKmjJPQAw4cXpXcxQaXVC/hSjDnd81lho6sSu6+WAl66GMiOW/j5j/CibHwgNh9v33S eg4m3sHl8hHMkc2wWsuaI8hF/ScG82WvL/DWpqHMBeJyPKkiJxuMCfJLNC1xARM127pe +g92uaNx1pgjINdpJ9FB6VXDOdQuDBkRuXDtOYMUCVRrWKxW4EutAb/sJ9xFBzoHCD5Z Zg6FSBCNDUOwVbX+sAWPR4R/0log6gXMibnKosMKJhlatymf/3M9mv6gJy7jGexSYc/4 7WiQ== X-RZG-AUTH: ":P2EQZWCpfu+qG7CngxMFH1J+3q8wa/QXkBR9MXjAuzBW/OdlBZQ4AHSS1QE=" X-RZG-CLASS-ID: mo00 Received: from aepfle.de by smtp.strato.de (RZmta 46.10.5 DYNA|AUTH) with ESMTPSA id m032cfw6UH8PDGa (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Thu, 30 Jul 2020 19:08:25 +0200 (CEST) Date: Thu, 30 Jul 2020 19:08:21 +0200 From: Olaf Hering To: Pry Mar Subject: Re: building grub-2.05 with Xen support in C8 versus Buster, looking at gntdev.h Message-ID: <20200730170821.GA541@aepfle.de> References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="9jxsPFA5p3P2qPhR" Content-Disposition: inline In-Reply-To: X-BeenThere: xen-users@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-users@lists.xenproject.org Cc: xen-users Errors-To: xen-users-bounces@lists.xenproject.org Sender: "Xen-users" --9jxsPFA5p3P2qPhR Content-Type: text/plain; charset=utf-8 Content-Disposition: inline On Mon, Jul 27, Pry Mar wrote: > http://git.savannah.gnu.org/cgit/grub.git/ > What else could I do to avoid a bad gntdev.h in Buster? Be more specific what the error is. There are no traces of the string 'gntdev.h' in my copy grub.git. Olaf --9jxsPFA5p3P2qPhR Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEE97o7Um30LT3B+5b/86SN7mm1DoAFAl8i/oAACgkQ86SN7mm1 DoCQfA//e0QcbApsoy5ftOZXRIc8BadeRKm/z8BesCcBn5IrGoDGK2h/dquAOjZF sooXaBtk+Fti1ffdtxlNCYYPy3hmTQqQ1IBF/C8/7eoyGEO0Lfh/no32mSUFwb5p EWCE9q7k6pU/mPNCurBIIERSEVKzVXpizLjxWLcBg0lyw617pd+xdLB4z2mKTYdS zRYMsXn7NVfQOcAgOpGaYcKeXzFLnqJx92V1FrNPcyGCVjv1PTxNPG0bVlVhgZ9h R14+UfCHDsw4uommwLMvY4uJCnfbJ9qStMBEuSkKeSdgMVsx9Lx4I87c0luXsRIl wyGMYkzGCHMG4UeNd2KqLey8PKjgLkO7ni7ggjwZGpknW01x69mMq2vZt2cugzJS Q+r12nL5V2qvGQdksqNilJ0h5v6GanYoayrs4TmbCBU/LqAcVQ3fHHqW2N3vfc9G CIZDVw0KX5FLURBdsemUBviOTSMWU+t7UMisarxz8W+zEDnv4zzyHTCjalbgb/oV 0kDp8cJjCnT0JvGRQ79nMMx1hQdE8K8HRT5QOp0Ey57xNC1IGJSIiWSVIxdZezqf eagCznGw5PLWe/SsKyGSyDvbIyf7AQKUkSSWclK/WifjQIW8p0R20FsaEwaGGvdz WA+b/lvykuOA1D/7+jDsEEf1VL2N5v3oTWnQqANUhYhFESn6o64= =vNmL -----END PGP SIGNATURE----- --9jxsPFA5p3P2qPhR--