From mirageos-devel-bounces@lists.xenproject.org Wed Nov 08 14:51:05 2017 Return-path: Envelope-to: archives@lists.xenproject.org Delivery-date: Wed, 08 Nov 2017 14:51:05 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eCRgr-0003yv-4U; Wed, 08 Nov 2017 14:50:53 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eCRgp-0003yp-Iy for mirageos-devel@lists.xenproject.org; Wed, 08 Nov 2017 14:50:51 +0000 Received: from [85.158.143.35] by server-9.bemta-6.messagelabs.com id 11/F3-30115-AC9130A5; Wed, 08 Nov 2017 14:50:50 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrMIsWRWlGSWpSXmKPExsVy0237Yd1Tksx RBl9+yFr0tt5lcWD0OPzhCksAYxRrZl5SfkUCa0Z/z2a2gq3MFb33rjA1MH5k6mLk5JAQUJC4 0r6ZpYuRi0NIYAaTxLrePywgCREBdYllp+4zgthsAvoSc5rus4LYwgIJEvsO3QSr4RVwk+heu 4kZxGYRUJG4fu44WI2oQLjE/u/XmCFqBCVOznwCVs8sYCYxb/NDZghbXmL72zlQtrjErSfzmS Yw8sxC0jILScssJC2zkLQsYGRZxahenFpUllqka6mXVJSZnlGSm5iZo2toYKaXm1pcnJiempO YVKyXnJ+7iREYVAxAsIPx7qaAQ4ySHExKorwPXjFFCfEl5adUZiQWZ8QXleakFh9ilOHgUJLg 7ZZgjhISLEpNT61Iy8wBhjdMWoKDR0mEdx5Imre4IDG3ODMdInWK0ZjjxsPrf5g4ns183cAsx JKXn5cqJc6bA1IqAFKaUZoHNwgWd5cYZaWEeRmBThPiKUgtys0sQZV/xSjOwagkzLscZApPZl 4J3L5XQKcwAZ2yP4QB5JSSRISUVANjrcTk38H+6a/NWKdN6s2qEVh3I29ft19wxEtV7fWvuL7 F/stZ1PZ/a4feUe4zrfLrlP6VH9vdLTLHRcRVwW7mjGtzHgW0WWkuUQy2Fd56t3r64RNraly+ 6pb7Tn977LiFi7fusv1Gsz947n2bxFoVfuTN6c6yV4+OdLG9Oqbq/ylTekk3u8oiJZbijERDL eai4kQA6MoobLYCAAA= X-Env-Sender: mindy@somerandomidiot.com X-Msg-Ref: server-16.tower-21.messagelabs.com!1510152650!69112290!1 X-Originating-IP: [217.70.183.195] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogMjE3LjcwLjE4My4xOTUgPT4gMzc4NjI=\n X-StarScan-Received: X-StarScan-Version: 9.4.45; 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banners=-,-,- X-VirusChecked: Checked Received: (qmail 36897 invoked from network); 11 Nov 2017 04:11:33 -0000 Received: from relay3-d.mail.gandi.net (HELO relay3-d.mail.gandi.net) (217.70.183.195) by server-14.tower-31.messagelabs.com with DHE-RSA-AES256-GCM-SHA384 encrypted SMTP; 11 Nov 2017 04:11:33 -0000 X-Originating-IP: 208.66.135.138 Received: from [10.137.0.9] (unknown [208.66.135.138]) (Authenticated sender: guybrush@somerandomidiot.com) by relay3-d.mail.gandi.net (Postfix) with ESMTPSA id B695CA80C6 for ; Sat, 11 Nov 2017 05:11:32 +0100 (CET) From: Mindy Preston To: mirageos-devel@lists.xenproject.org Message-ID: <6042ab37-a498-2d25-9f11-38d82145b869@somerandomidiot.com> Date: Fri, 10 Nov 2017 22:12:15 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 Content-Language: en-US Subject: [MirageOS-devel] Friday, 17th November 2017 is Bug Cleaning Day! 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Tue, 14 Nov 2017 09:14:10 -0800 (PST) To: Sven Anderson , mirageos-devel@lists.xenproject.org References: From: Gabriel de Perthuis Message-ID: <42b01a51-eb5a-0a42-70b4-61fb448ef615@gmail.com> Date: Tue, 14 Nov 2017 18:14:09 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:56.0) Gecko/20100101 Thunderbird/56.0 MIME-Version: 1.0 In-Reply-To: Content-Language: fr Subject: Re: [MirageOS-devel] Current persistent storage situation X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" SGVsbG8sCgpJJ20gdGhlIGRldmVsb3BlciBvZiBXb2Rhbi4gIFdvZGFuIGl0c2VsZiBpcyByZXN0 cmljdGVkIHRvIGZpeGVkLXNpemVkCmtleXMgYW5kIGJvdW5kZWQtc2l6ZSB2YWx1ZXMgd2hpY2gg bWlnaHQgYmUgdG9vIGNvbnN0cmFpbmluZyBmb3IgeW91LiAgSQphbSBjdXJyZW50bHkgd29ya2lu ZyBvbiBhbiBJcm1pbiBsYXllciBvbiB0b3Agb2YgaXQuICBJdCdzIGN1cnJlbnRseSBpbgphIHBy aXZhdGUgYnJhbmNoIHVudGlsIGFsbCB0ZXN0cyBwYXNzOyB0aGUgY2h1bmtpbmcgYXBwcm9hY2gg c2VlbXMgdG8KYnJlYWsgdGhlIGV4aXN0aW5nIHRlc3RzLgoKTGUgMTQvMTEvMjAxNyDDoCAxNToz OSwgU3ZlbiBBbmRlcnNvbiBhIMOpY3JpdMKgOgo+IEhpLAo+IAo+IFRMO0RSOiB3aGF0IGN1cnJl bnQgcGVyc2lzdGVudCBzdG9yYWdlIG9wdGlvbnMgYXJlIG91dCB0aGVyZSBfbm93Xz8KPiAKPiBm b3Igb3VyIHByb2plY3QgKHNlY3VyZSBwcml2YXRlIGtleSBzdG9yYWdlLAo+IGh0dHBzOi8vZ2l0 aHViLmNvbS9rZXlmZW5kZXIpIHdlIG5lZWQgYSBwZXJzaXN0ZW50IHN0b3JhZ2UgZm9yIG91cgo+ IHVuaWtlcm5lbCBhcHBsaWNhdGlvbiwgcGVyc2lzdGVudCBpbiB0aGUgbWVhbmluZyBvZiBzdXJ2 aXZpbmcgcmVib290cyBvZgo+IHRoZSB1bmlrZXJuZWwuIEl0IGRvZXNuJ3QgaGF2ZSB0byBiZSBu ZWNlc3NhcmlseSAibG9jYWwiIGluIGEgc2Vuc2Ugb2YKPiB3cml0aW5nIGl0IHRvIGEgc3RvcmFn ZSBkZXZpY2UgdGhhdCB0aGUgbWlyYWdlIHVuaWtlcm5lbCBoYXMgZGlyZWN0Cj4gYWNjZXNzIHRv LCBpdCBjb3VsZCBhbHNvIGJlIGFub3RoZXIgVk0sIHRoYXQgcnVucyBhIG5ldHdvcmsgZGFlbW9u IHRoYXQKPiB0aGUgdW5pa2VybmVsIGlzIGNvbm5lY3RpbmcgdG8uIFRoZSBsYXR0ZXIgd291bGQg aGF2ZSB0aGUgYWR2YW50YWdlIG9mCj4gZ2l2aW5nIHVzIGNvbmN1cnJlbmN5IGZvciBtdWx0aS1j b3JlIG9yIG11bHRpLW5vZGUgZm9yIGZyZWUgd2hpY2ggd2UKPiBwbGFuIHRvIHN1cHBvcnQgYW55 d2F5Lgo+IAo+IFRoZSBkYXRhIHdlIG5lZWQgdG8gc3RvcmUgaGFzIGEgc2ltcGxlIEtWIHN0cnVj dHVyZSwgZm9yIGNvbmZpZ3VyYXRpb24KPiBhbmQgcGF5bG9hZCBkYXRhLCB0aGUga2V5cyBhcmUg c3RyaW5ncywgdGhlIHZhbHVlcyBhcmUgYXJiaXRyYXJ5IG9jYW1sCj4gb2JqZWN0cywgdGhleSBj b3VsZCBiZSBzZXJpYWxpemVkIGludG8ganNvbiB0aG91Z2gsIGlmIG5lY2Vzc2FyeS4gVGhlCj4g ZGF0YSBhbW91bnQgaXMgcmF0aGVyIHNtYWxsLCB3cml0ZSByYXJlbHksIHJlYWQgb2Z0ZW4gKGJ1 dCBzaG91bGQgYmUKPiBjYWNoZWQgbG9jYWxseSwgYmVjYXVzZSBvZiB0aGUgcHJldHR5IGNvbnN0 YW50IG5hdHVyZSBvZiB0aGUgZGF0YSkuCj4gQ29uc2lzdGVuY3kgYmV0d2VlbiBkaWZmZXJlbnQg dGhyZWFkcy9ub2RlcyB3b3VsZCBiZSBtb3JlIGltcG9ydGFudCB0aGFuCj4gSU8gcGVyZm9ybWFu Y2UuCj4gCj4gTm93IHRoZSBxdWVzdGlvbiBpczogd2hhdCBvcHRpb25zIGRvIHdlIGhhdmUsIGlm IGFueT8KPiAKPiBJcm1pbiBzZWVtcyB0byBiZSBhIHByZXR0eSBnb29kIGZpdCwgZ2l2aW5nIHVz IGEgZGlzdHJpYnV0ZWQgc3RvcmFnZQo+IHN0cnVjdHVyZSwgYW5kIElJVUMgSXJtaW4gd2l0aGlu IE1pcmFnZU9TIGRvZXNuJ3Qgc3RvcmUgbG9jYWxseSBidXQKPiBjb3VsZCB1c2UgYSBHaXQgc2Vy dmVyIG9yIE5vbi1NaXJhZ2UtSXJtaW4tU2VydmVyIG9uIGFub3RoZXIgbm9kZSBhcwo+IHBlcnNp c3RlbnQgc3RvcmFnZSwgaXMgdGhpcyBjb3JyZWN0Pwo+IAo+IFdoYXQgb3RoZXIgb3B0aW9ucyBh cmUgb3V0IHRoZXJlPyB0aGUgV29kYW4gcHJvamVjdAo+IChodHRwczovL2dpdGh1Yi5jb20vZzJw L3dvZGFuKSBpcyByZWFkeSBmb3IgInByb2R1Y3Rpb24iPwo+IAo+IEFyZSB0aGVyZSBiYWNrZW5k cyBmb3Igc3RhbmRhcmQgU1FMIGRhdGFiYXNlcywgbGlrZSBNYXJpYURCL1Bvc3RncmVTUUw/Cj4g Cj4gVGhhbmtzIGluIGFkdmFuY2UgZm9yIGFueSBwb2ludGVycyBhbmQgaGludHMhCj4gCj4gCj4g Q2hlZXJzCj4gCj4gU3Zlbgo+IAo+IF9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fCj4gTWlyYWdlT1MtZGV2ZWwgbWFpbGluZyBsaXN0Cj4gTWlyYWdlT1MtZGV2 ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKPiBodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL2Nn aS1iaW4vbWFpbG1hbi9saXN0aW5mby9taXJhZ2Vvcy1kZXZlbAo+IAoKCl9fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCk1pcmFnZU9TLWRldmVsIG1haWxpbmcg bGlzdApNaXJhZ2VPUy1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhl bnByb2plY3Qub3JnL2NnaS1iaW4vbWFpbG1hbi9saXN0aW5mby9taXJhZ2Vvcy1kZXZlbAo= From mirageos-devel-bounces@lists.xenproject.org Fri Nov 17 09:08:13 2017 Return-path: Envelope-to: archives@lists.xenproject.org Delivery-date: Fri, 17 Nov 2017 09:08:13 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eFccv-0000oy-Q0; 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Thu, 16 Nov 2017 20:54:15 +0000 From: "Canada, David Harold" To: "mirageos-devel@lists.xenproject.org" Thread-Topic: Unikernel Under Xen on ODROID-XU3 (ARMv7) Thread-Index: AdNfDDcy9Ts4j/mbRNWWxdxpBLYH/A== Date: Thu, 16 Nov 2017 20:54:15 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [162.18.92.36] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; MWHPR01MB2413; 6:axApciPwtHAaZNEFpNqNN3xFGtN7mNtq6+ezvx+TQTprz9KVcRpuO/0G/d2EjoaQ2xhkgXvQUZiHP/lcltds+5FN7aOrmJE9TLALxmPmPOp/aO6au77XOW7ee57TdyLwJqQ/T1x4iKJaUy+owOsOMhAa2XMdR3yUoIdz8txWV/+n5Wlk5RA4Qn+yf5WsshpnCam5xY2L6QVWIIhVGQwmBN8ix0n1JW7zoP3rC0w9zWVrdDm0pk0dOXbx7Lrp8dNHBy+t7mZSIw/tAv0nRSiywC29Vs3P8/ohwsV+dWy0DnIlWAC5F9+C429hGURnCmFqdtDyQIw8kgxix4EbJ8Uvt5oejkdRxB5JpRuivNJOrHE=; 5:mzwKRgDDmdOvhxN0pCKhJp0mJm4JmDlBGJDQqPc7kHB6S194ut5PAJm2oJe+6lPhRzuxbEBvo84wFTwiHBWSy8TkHU0Qjekx6two8idbJ/V0fHiOepDYilPpMdAAiDmSRb1QufkfzZQbXqssNUKpa/GmcBME55zsD7tAySnwoNk=; 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MX:1; LANG:en; received-spf: None (protection.outlook.com: wright.edu does not designate permitted sender hosts) spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: wright.edu X-MS-Exchange-CrossTenant-Network-Message-Id: 84241a7f-ed5d-4759-d9d1-08d52d343285 X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Nov 2017 20:54:15.0412 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5c46d65d-ee5c-4513-8cd4-af98d15e6833 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR01MB2413 X-Mailman-Approved-At: Fri, 17 Nov 2017 09:07:56 +0000 Subject: [MirageOS-devel] Unikernel Under Xen on ODROID-XU3 (ARMv7) X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1616789376967226917==" Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" --===============1616789376967226917== Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_MWHPR01MB24153D8084194A3874C570FFA22E0MWHPR01MB2415prod_" --_000_MWHPR01MB24153D8084194A3874C570FFA22E0MWHPR01MB2415prod_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable All, I am attempting to get a MirageOS Unikernel working under Xen on an ODROID-= XU3 (ARMv7) board. I am able to start a Ubuntu DomU successfully following = the instructions from HardKernel (https://wiki.odroid.com/odroid-xu4/applic= ation_note/software/xen_virtualization) but I have not been able to start a= ny MirageOS Unikernel under Xen yet. The noop tutorial from mirage-skeleton works fine when built for UNIX on th= e ARM board but the boot process appears to hang under Xen (see the log bel= ow). I have to use Ctrl + ] to detach from the frozen console. The noop dom= U then appears in the results of "xl list" and I cannot shut it down with "= xl shutdown noop" I must kill it with "xl destroy noop". I've also tried building mirage-www and it appears to have the same problem= under Xen. Xen is version 4.6 (https://github.com/bkrepo/xen -b odroid-xu4) OCaml is version 4.04.2 (mirage-xen-ocaml requires OCaml < 4.05 https://git= hub.com/ocaml/opam-repository/blob/master/packages/mirage-xen-ocaml/mirage-= xen-ocaml.3.0.4/opam) mirage is version 3.0.5 base is pinned to v0.9.3 (newer versions of base require OCaml > 4.04., old= er versions have mpopcnt error https://github.com/janestreet/base/issues/15= ) uri is pinned to 1.9.2 (Work around the assembler error described here: htt= ps://github.com/mirage/ocaml-uri/issues/106) Here is the output of running xl -vv create -c noop.xl: Parsing config from noop.xl libxl: debug: libxl_create.c:1557:do_domain_create: ao 0x3c1c8: create: how= =3D(nil) callback=3D(nil) poller=3D0x35b50 libxl: debug: libxl_arm.c:59:libxl__arch_domain_prepare_config: Configure t= he domain libxl: debug: libxl_arm.c:62:libxl__arch_domain_prepare_config: - Allocate= 0 SPIs libxl: debug: libxl_create.c:945:initiate_domain_create: running bootloader libxl: debug: libxl_bootloader.c:330:libxl__bootloader_run: no bootloader c= onfigured, using user supplied kernel libxl: debug: libxl_event.c:691:libxl__ev_xswatch_deregister: watch w=3D0x3= 63a0: deregister unregistered domainbuilder: detail: xc_dom_allocate: cmdline=3D"(null)", features=3D"(nu= ll)" libxl: debug: libxl_dom.c:624:libxl__build_pv: pv kernel mapped 0 path /roo= t/mirage-skeleton/tutorial/noop/./noop.xen domainbuilder: detail: xc_dom_kernel_file: filename=3D"/root/mirage-skeleto= n/tutorial/noop/./noop.xen" domainbuilder: detail: xc_dom_malloc_filemap : 1470 kB domainbuilder: detail: xc_dom_boot_xen_init: ver 4.6, caps xen-3.0-armv7l domainbuilder: detail: xc_dom_rambase_init: RAM starts at 40000 domainbuilder: detail: xc_dom_parse_image: called domainbuilder: detail: xc_dom_find_loader: trying multiboot-binary loader .= .. domainbuilder: detail: loader probe failed domainbuilder: detail: xc_dom_find_loader: trying Linux zImage (ARM64) load= er ... domainbuilder: detail: xc_dom_probe_zimage64_kernel: kernel is not an arm64= Image domainbuilder: detail: loader probe failed domainbuilder: detail: xc_dom_find_loader: trying Linux zImage (ARM32) load= er ... domainbuilder: detail: loader probe OK domainbuilder: detail: xc_dom_parse_zimage32_kernel: called domainbuilder: detail: xc_dom_parse_zimage32_kernel: xen-3.0-armv7l: 0x4000= 8000 -> 0x40177ac0 libxl: debug: libxl_arm.c:776:libxl__arch_domain_init_hw_description: const= ructing DTB for Xen version 4.6 guest libxl: debug: libxl_arm.c:777:libxl__arch_domain_init_hw_description: - vG= IC version: V2 libxl: debug: libxl_arm.c:380:make_memory_nodes: Creating placeholder node = /memory@40000000 libxl: debug: libxl_arm.c:380:make_memory_nodes: Creating placeholder node = /memory@200000000 libxl: debug: libxl_arm.c:871:libxl__arch_domain_init_hw_description: fdt t= otal size 1237 domainbuilder: detail: xc_dom_devicetree_mem: called domainbuilder: detail: xc_dom_mem_init: mem 256 MB, pages 0x10000 pages, 4k= each domainbuilder: detail: xc_dom_mem_init: 0x10000 pages domainbuilder: detail: xc_dom_boot_mem_init: called domainbuilder: detail: set_mode: guest xen-3.0-armv7l, address size 32 domainbuilder: detail: xc_dom_malloc : 512 kB domainbuilder: detail: populate_guest_memory: populating RAM @ 000000004000= 0000-0000000050000000 (256MB) domainbuilder: detail: populate_one_size: populated 0x80/0x80 entries with = shift 9 domainbuilder: detail: arch_setup_meminit: placing boot modules at 0x480000= 00 domainbuilder: detail: arch_setup_meminit: devicetree: 0x48000000 -> 0x4800= 1000 libxl: debug: libxl_arm.c:902:finalise_one_memory_node: Populating placehol= der node /memory@40000000 libxl: debug: libxl_arm.c:896:finalise_one_memory_node: Nopping out placeho= lder node /memory@200000000 domainbuilder: detail: xc_dom_build_image: called domainbuilder: detail: xc_dom_alloc_segment: kernel : 0x40008000 ->= 0x40178000 (pfn 0x40008 + 0x170 pages) domainbuilder: detail: xc_dom_pfn_to_ptr_retcount: domU mapping: pfn 0x4000= 8+0x170 at 0xb6991000 domainbuilder: detail: xc_dom_load_zimage_kernel: called domainbuilder: detail: xc_dom_load_zimage_kernel: kernel seg 0x40008000-0x4= 0178000 domainbuilder: detail: xc_dom_load_zimage_kernel: copy 1505984 bytes from b= lob 0xb6b82000 to dst 0xb6991000 domainbuilder: detail: xc_dom_alloc_segment: devicetree : 0x48000000 ->= 0x48001000 (pfn 0x48000 + 0x1 pages) domainbuilder: detail: xc_dom_pfn_to_ptr_retcount: domU mapping: pfn 0x4800= 0+0x1 at 0xb6f4d000 domainbuilder: detail: alloc_magic_pages: called domainbuilder: detail: count_pgtables_arm: called domainbuilder: detail: xc_dom_build_image : virt_alloc_end : 0x48001000 domainbuilder: detail: xc_dom_build_image : virt_pgtab_end : 0x0 domainbuilder: detail: xc_dom_boot_image: called domainbuilder: detail: arch_setup_bootearly: doing nothing domainbuilder: detail: xc_dom_compat_check: supported guest type: xen-3.0-a= rmv7l <=3D matches domainbuilder: detail: setup_pgtables_arm: called domainbuilder: detail: clear_page: pfn 0x39000, mfn 0x39000 domainbuilder: detail: clear_page: pfn 0x39001, mfn 0x39001 domainbuilder: detail: start_info_arm: called domainbuilder: detail: domain builder memory footprint domainbuilder: detail: allocated domainbuilder: detail: malloc : 522 kB domainbuilder: detail: anon mmap : 0 bytes domainbuilder: detail: mapped domainbuilder: detail: file mmap : 1470 kB domainbuilder: detail: domU mmap : 1476 kB domainbuilder: detail: vcpu_arm32: called domainbuilder: detail: Initial state CPSR 0x1d3 PC 0x40008000 domainbuilder: detail: launch_vm: called, ctxt=3D0xb6f4f004 domainbuilder: detail: xc_dom_gnttab_hvm_seed: called, pfn=3D0x38000 domainbuilder: detail: xc_dom_release: called libxl: debug: libxl_event.c:2193:libxl__ao_progress_report: ao 0x3c1c8: pro= gress report: callback queued aop=3D0x3adb8 libxl: debug: libxl_event.c:1874:libxl__ao_complete: ao 0x3c1c8: complete, = rc=3D0 libxl: debug: libxl_event.c:1410:egc_run_callbacks: ao 0x3c1c8: progress re= port: callback aop=3D0x3adb8 libxl: debug: libxl_create.c:1580:do_domain_create: ao 0x3c1c8: inprogress:= poller=3D0x35b50, flags=3Dic libxl: debug: libxl_event.c:1843:libxl__ao__destroy: ao 0x3c1c8: destroy xc: debug: hypercall buffer: total allocations:95 total releases:95 xc: debug: hypercall buffer: current allocations:0 maximum allocations:3 xc: debug: hypercall buffer: cache current size:3 xc: debug: hypercall buffer: cache hits:84 misses:3 toobig:8 Thanks in advance! Regards, David --_000_MWHPR01MB24153D8084194A3874C570FFA22E0MWHPR01MB2415prod_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

All,

 

I am attempting to get a MirageOS Unikernel working = under Xen on an ODROID-XU3 (ARMv7) board. I am able to start a Ubuntu DomU = successfully following the instructions from HardKernel (h= ttps://wiki.odroid.com/odroid-xu4/application_note/software/xen_virtualizat= ion) but I have not been able to start any MirageOS Unikernel under Xen yet.

 

The noop tutorial from mirage-skeleton works fine wh= en built for UNIX on the ARM board but the boot process appears to hang und= er Xen (see the log below). I have to use Ctrl + ] to detach from the f= rozen console. The noop domU then appears in the results of “xl list” and I cannot shut it down with = 220;xl shutdown noop” I must kill it with “xl destroy noop̶= 1;.

 

I’ve also tried building mirage-www and it app= ears to have the same problem under Xen.

 

Xen is version 4.6 (https://github.com/bkrepo/xen -b odroid-xu4)

OCaml is version 4.04.2 (mirage-xen-ocaml requires OCaml &= lt; 4.05 https://github.com/ocaml/opam-repository/blob/master/packages/mirage-xen-oc= aml/mirage-xen-ocaml.3.0.4/opam)

mirage is version 3.0.5

base is pinned to v0.9.3 (newer versions of base require O= Caml > 4.04., older versions have mpopcnt error https://github.= com/janestreet/base/issues/15)

uri is pinned to 1.9.2 (Work around the assembler error de= scribed here: https://githu= b.com/mirage/ocaml-uri/issues/106)

 

Here is the output of running xl -vv create -c noop.= xl:

 

Parsing config from= noop.xl

libxl: debug: libxl= _create.c:1557:do_domain_create: ao 0x3c1c8: create: how=3D(nil) callback= =3D(nil) poller=3D0x35b50

libxl: debug: libxl= _arm.c:59:libxl__arch_domain_prepare_config: Configure the domain

libxl: debug: libxl= _arm.c:62:libxl__arch_domain_prepare_config:  - Allocate 0 SPIs

libxl: debug: libxl= _create.c:945:initiate_domain_create: running bootloader<= /p>

libxl: debug: libxl= _bootloader.c:330:libxl__bootloader_run: no bootloader configured, using us= er supplied kernel

libxl: debug: libxl= _event.c:691:libxl__ev_xswatch_deregister: watch w=3D0x363a0: deregister un= registered

domainbuilder: deta= il: xc_dom_allocate: cmdline=3D"(null)", features=3D"(null)&= quot;

libxl: debug: libxl= _dom.c:624:libxl__build_pv: pv kernel mapped 0 path /root/mirage-skeleton/t= utorial/noop/./noop.xen

domainbuilder: deta= il: xc_dom_kernel_file: filename=3D"/root/mirage-skeleton/tutorial/noo= p/./noop.xen"

domainbuilder: deta= il: xc_dom_malloc_filemap    : 1470 kB

domainbuilder: deta= il: xc_dom_boot_xen_init: ver 4.6, caps xen-3.0-armv7l

domainbuilder: deta= il: xc_dom_rambase_init: RAM starts at 40000

domainbuilder: deta= il: xc_dom_parse_image: called

domainbuilder: deta= il: xc_dom_find_loader: trying multiboot-binary loader ...

domainbuilder: deta= il: loader probe failed

domainbuilder: deta= il: xc_dom_find_loader: trying Linux zImage (ARM64) loader ...

domainbuilder: deta= il: xc_dom_probe_zimage64_kernel: kernel is not an arm64 Image

domainbuilder: deta= il: loader probe failed

domainbuilder: deta= il: xc_dom_find_loader: trying Linux zImage (ARM32) loader ...

domainbuilder: deta= il: loader probe OK

domainbuilder: deta= il: xc_dom_parse_zimage32_kernel: called

domainbuilder: deta= il: xc_dom_parse_zimage32_kernel: xen-3.0-armv7l: 0x40008000 -> 0x40177a= c0

libxl: debug: libxl= _arm.c:776:libxl__arch_domain_init_hw_description: constructing DTB for Xen= version 4.6 guest

libxl: debug: libxl= _arm.c:777:libxl__arch_domain_init_hw_description:  - vGIC version: V2=

libxl: debug: libxl= _arm.c:380:make_memory_nodes: Creating placeholder node /memory@40000000

libxl: debug: libxl= _arm.c:380:make_memory_nodes: Creating placeholder node /memory@200000000

libxl: debug: libxl= _arm.c:871:libxl__arch_domain_init_hw_description: fdt total size 1237=

domainbuilder: deta= il: xc_dom_devicetree_mem: called

domainbuilder: deta= il: xc_dom_mem_init: mem 256 MB, pages 0x10000 pages, 4k each

domainbuilder: deta= il: xc_dom_mem_init: 0x10000 pages

domainbuilder: deta= il: xc_dom_boot_mem_init: called

domainbuilder: deta= il: set_mode: guest xen-3.0-armv7l, address size 32

domainbuilder: deta= il: xc_dom_malloc         &nbs= p;  : 512 kB

domainbuilder: deta= il: populate_guest_memory: populating RAM @ 0000000040000000-00000000500000= 00 (256MB)

domainbuilder: deta= il: populate_one_size: populated 0x80/0x80 entries with shift 9<= /span>

domainbuilder: deta= il: arch_setup_meminit: placing boot modules at 0x48000000

domainbuilder: deta= il: arch_setup_meminit: devicetree: 0x48000000 -> 0x48001000<= /span>

libxl: debug: libxl= _arm.c:902:finalise_one_memory_node: Populating placeholder node /memory@40= 000000

libxl: debug: libxl= _arm.c:896:finalise_one_memory_node: Nopping out placeholder node /memory@2= 00000000

domainbuilder: deta= il: xc_dom_build_image: called

domainbuilder: deta= il: xc_dom_alloc_segment:   kernel      =  : 0x40008000 -> 0x40178000  (pfn 0x40008 + 0x170 pages)

domainbuilder: deta= il: xc_dom_pfn_to_ptr_retcount: domU mapping: pfn 0x40008+0x170 at 0xb6= 991000

domainbuilder: deta= il: xc_dom_load_zimage_kernel: called

domainbuilder: deta= il: xc_dom_load_zimage_kernel: kernel seg 0x40008000-0x40178000<= /span>

domainbuilder: deta= il: xc_dom_load_zimage_kernel: copy 1505984 bytes from blob 0xb6b82000 to d= st 0xb6991000

domainbuilder: deta= il: xc_dom_alloc_segment:   devicetree   : 0x48000000 -= > 0x48001000  (pfn 0x48000 + 0x1 pages)

domainbuilder: deta= il: xc_dom_pfn_to_ptr_retcount: domU mapping: pfn 0x48000+0x1 at 0xb6f4= d000

domainbuilder: deta= il: alloc_magic_pages: called

domainbuilder: deta= il: count_pgtables_arm: called

domainbuilder: deta= il: xc_dom_build_image  : virt_alloc_end : 0x48001000

domainbuilder: deta= il: xc_dom_build_image  : virt_pgtab_end : 0x0

domainbuilder: deta= il: xc_dom_boot_image: called

domainbuilder: deta= il: arch_setup_bootearly: doing nothing

domainbuilder: deta= il: xc_dom_compat_check: supported guest type: xen-3.0-armv7l <=3D match= es

domainbuilder: deta= il: setup_pgtables_arm: called

domainbuilder: deta= il: clear_page: pfn 0x39000, mfn 0x39000

domainbuilder: deta= il: clear_page: pfn 0x39001, mfn 0x39001

domainbuilder: deta= il: start_info_arm: called

domainbuilder: deta= il: domain builder memory footprint

domainbuilder: deta= il:    allocated

domainbuilder: deta= il:       malloc     = ;        : 522 kB

domainbuilder: deta= il:       anon mmap    &n= bsp;     : 0 bytes

domainbuilder: deta= il:    mapped

domainbuilder: deta= il:       file mmap    &n= bsp;     : 1470 kB

domainbuilder: deta= il:       domU mmap    &n= bsp;     : 1476 kB

domainbuilder: deta= il: vcpu_arm32: called

domainbuilder: deta= il: Initial state CPSR 0x1d3 PC 0x40008000

domainbuilder: deta= il: launch_vm: called, ctxt=3D0xb6f4f004

domainbuilder: deta= il: xc_dom_gnttab_hvm_seed: called, pfn=3D0x38000

domainbuilder: deta= il: xc_dom_release: called

libxl: debug: libxl= _event.c:2193:libxl__ao_progress_report: ao 0x3c1c8: progress report: callb= ack queued aop=3D0x3adb8

libxl: debug: libxl= _event.c:1874:libxl__ao_complete: ao 0x3c1c8: complete, rc=3D0

libxl: debug: libxl= _event.c:1410:egc_run_callbacks: ao 0x3c1c8: progress report: callback aop= =3D0x3adb8

libxl: debug: libxl= _create.c:1580:do_domain_create: ao 0x3c1c8: inprogress: poller=3D0x35b50, = flags=3Dic

libxl: debug: libxl= _event.c:1843:libxl__ao__destroy: ao 0x3c1c8: destroy

xc: debug: hypercal= l buffer: total allocations:95 total releases:95

xc: debug: hypercal= l buffer: current allocations:0 maximum allocations:3

xc: debug: hypercal= l buffer: cache current size:3

xc: debug: hypercal= l buffer: cache hits:84 misses:3 toobig:8

 

Thanks in advance!

 

Regards,

David

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boundary="===============1724977738968218837==" Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" --===============1724977738968218837== Content-Type: multipart/alternative; boundary="001a113df10820508e055e81bcda" --001a113df10820508e055e81bcda Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable https://github.com/tomjridge/tjr_btree ? It is not hooked into mirage block device, so that might require some hacking. On 14 November 2017 at 17:14, Gabriel de Perthuis wrote: > Hello, > > I'm the developer of Wodan. Wodan itself is restricted to fixed-sized > keys and bounded-size values which might be too constraining for you. I > am currently working on an Irmin layer on top of it. It's currently in > a private branch until all tests pass; the chunking approach seems to > break the existing tests. > > Le 14/11/2017 =C3=A0 15:39, Sven Anderson a =C3=A9crit : > > Hi, > > > > TL;DR: what current persistent storage options are out there _now_? > > > > for our project (secure private key storage, > > https://github.com/keyfender) we need a persistent storage for our > > unikernel application, persistent in the meaning of surviving reboots o= f > > the unikernel. It doesn't have to be necessarily "local" in a sense of > > writing it to a storage device that the mirage unikernel has direct > > access to, it could also be another VM, that runs a network daemon that > > the unikernel is connecting to. The latter would have the advantage of > > giving us concurrency for multi-core or multi-node for free which we > > plan to support anyway. > > > > The data we need to store has a simple KV structure, for configuration > > and payload data, the keys are strings, the values are arbitrary ocaml > > objects, they could be serialized into json though, if necessary. The > > data amount is rather small, write rarely, read often (but should be > > cached locally, because of the pretty constant nature of the data). > > Consistency between different threads/nodes would be more important tha= n > > IO performance. > > > > Now the question is: what options do we have, if any? > > > > Irmin seems to be a pretty good fit, giving us a distributed storage > > structure, and IIUC Irmin within MirageOS doesn't store locally but > > could use a Git server or Non-Mirage-Irmin-Server on another node as > > persistent storage, is this correct? > > > > What other options are out there? the Wodan project > > (https://github.com/g2p/wodan) is ready for "production"? > > > > Are there backends for standard SQL databases, like MariaDB/PostgreSQL? > > > > Thanks in advance for any pointers and hints! > > > > > > Cheers > > > > Sven > > > > _______________________________________________ > > MirageOS-devel mailing list > > MirageOS-devel@lists.xenproject.org > > https://lists.xenproject.org/cgi-bin/mailman/listinfo/mirageos-devel > > > > > _______________________________________________ > MirageOS-devel mailing list > MirageOS-devel@lists.xenproject.org > https://lists.xenproject.org/cgi-bin/mailman/listinfo/mirageos-devel > --001a113df10820508e055e81bcda Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
https:/= /github.com/tomjridge/tjr_btree ? It is not hooked into mirage block de= vice, so that might require some hacking.

On 14 November 2017 at 17:14, Gabriel de = Perthuis <g2p.code@gmail.com> wrote:
Hello,

I'm the developer of Wodan.=C2=A0 Wodan itself is restricted to fixed-s= ized
keys and bounded-size values which might be too constraining for you.=C2=A0= I
am currently working on an Irmin layer on top of it.=C2=A0 It's current= ly in
a private branch until all tests pass; the chunking approach seems to
break the existing tests.

Le 14/11/2017 =C3=A0 15:39, Sven Anderson a =C3=A9crit=C2=A0:
> Hi,
>
> TL;DR: what current persistent storage options are out there _now_? >
> for our project (secure private key storage,
> https://github.com/keyfender) we need a persistent storage for = our
> unikernel application, persistent in the meaning of surviving reboots = of
> the unikernel. It doesn't have to be necessarily "local"= in a sense of
> writing it to a storage device that the mirage unikernel has direct > access to, it could also be another VM, that runs a network daemon tha= t
> the unikernel is connecting to. The latter would have the advantage of=
> giving us concurrency for multi-core or multi-node for free which we > plan to support anyway.
>
> The data we need to store has a simple KV structure, for configuration=
> and payload data, the keys are strings, the values are arbitrary ocaml=
> objects, they could be serialized into json though, if necessary. The<= br> > data amount is rather small, write rarely, read often (but should be > cached locally, because of the pretty constant nature of the data). > Consistency between different threads/nodes would be more important th= an
> IO performance.
>
> Now the question is: what options do we have, if any?
>
> Irmin seems to be a pretty good fit, giving us a distributed storage > structure, and IIUC Irmin within MirageOS doesn't store locally bu= t
> could use a Git server or Non-Mirage-Irmin-Server on another node as > persistent storage, is this correct?
>
> What other options are out there? the Wodan project
> (https://github.com/g2p/wodan) is ready for "production&qu= ot;?
>
> Are there backends for standard SQL databases, like MariaDB/PostgreSQL= ?
>
> Thanks in advance for any pointers and hints!
>
>
> Cheers
>
> Sven
>
> _______________________________________________
> MirageOS-devel mailing list
> MirageOS-devel@= lists.xenproject.org
> https://lists.xenproject.or= g/cgi-bin/mailman/listinfo/mirageos-devel
>


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banners=-,-,- X-VirusChecked: Checked Received: (qmail 25682 invoked from network); 22 Nov 2017 12:25:23 -0000 Received: from relay3-d.mail.gandi.net (HELO relay3-d.mail.gandi.net) (217.70.183.195) by server-3.tower-206.messagelabs.com with DHE-RSA-AES256-GCM-SHA384 encrypted SMTP; 22 Nov 2017 12:25:23 -0000 X-Originating-IP: 173.119.4.87 Received: from [10.137.0.9] (173-119-4-87.pools.spcsdns.net [173.119.4.87]) (Authenticated sender: guybrush@somerandomidiot.com) by relay3-d.mail.gandi.net (Postfix) with ESMTPSA id B47CAA80C0 for ; Wed, 22 Nov 2017 13:25:22 +0100 (CET) From: Mindy Preston To: mirageos-devel@lists.xenproject.org Message-ID: <4875db65-02b6-a6ec-c6ae-6d18f30108d9@somerandomidiot.com> Date: Wed, 22 Nov 2017 06:26:20 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 Content-Language: en-US Subject: [MirageOS-devel] MirageOS biweekly (fortnightly) catchup - Wednesday, 22 November at 16:00 UTC X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; 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banners=-,-,- X-VirusChecked: Checked Received: (qmail 8158 invoked from network); 22 Nov 2017 17:22:07 -0000 Received: from mail-ot0-f176.google.com (HELO mail-ot0-f176.google.com) (74.125.82.176) by server-4.tower-206.messagelabs.com with AES128-GCM-SHA256 encrypted SMTP; 22 Nov 2017 17:22:07 -0000 Received: by mail-ot0-f176.google.com with SMTP id s4so14185881ote.4 for ; Wed, 22 Nov 2017 09:22:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=AQ3ZaJ39ap90U+hlrpyn9NWsk7dv0wcYFelXAXXTGoY=; b=rDcbR3kFu2WlPWDdQhkVs0/fvL1T7STPh16d27mTU8J/l5pxD1pZFU5TSM0+gb/PLD WVY9O/MFVMwuAbjeLosDEiugwcB97b37KK9cw2V+TN4TEGTQG6MaOCtc1wErZJqpyGea qhESCqeOD4/70Wh7wktjx0fSRMkYuRuFoK3MIDcL2DPiKAd6TBoJ58zLbGyVu4l5L1aF 8zU77rJ06rWezXUss4EgAlkO8iHvaxQFWfyevaMEpK8yWpRSmUjht+NCsnEAzTRAnG3z gpkOpnSk3BMuIlnXK7SVoaO8u19yUknTY49YmDcBNa+WPB9kuG89lhAbXTfqP59VTvfu btXg== 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=AQ3ZaJ39ap90U+hlrpyn9NWsk7dv0wcYFelXAXXTGoY=; b=H5iove6aLE39OUAJVgBmRQGxj8cNGX3LQAXzAasasMNw5ueIqmS/n6tGkEblXrbY+a HaavNF8XeL7eZj8LtirWkdCZoBpNQsKeKmxO6LwK0XFxtCLXFSQhXE2QFtYSfvRNOmeJ kM8Z1zAICzPRvV3/Z+mA7ehs/tqzT0MHEPEZY/D8uLOs20vCEKbLTeCO6cv52e29ME3F QKOLm62IJEECg7LLv5NtlN5XhnhBus905l+YaVq6VlWd0kfzbfhy8VgEzkiAE4Y+Zo/H C+/B9rOp5anr0DsASw7ll7rIWm7T1Gl+wkUamjxxZ9Rt/L+tQ9s28o/zaUKi0eKmPvD0 wgNQ== X-Gm-Message-State: AJaThX5WBDFYufp8L2Nn0dqOpMAC7fIez2JioOkWZ6cl0WOcpyRBxt3N QltJPscHFVK52cYoY5tXcui0bpBp680wNY0yPLE= X-Google-Smtp-Source: AGs4zMY+hT1jLn5CCI8tqv0UP5am5cg0jLEnyFmFn5GnqwDpAmrnxOrR0yWlK+44s2xZbK03/BFTPOR0jBnXCh9hlGg= X-Received: by 10.157.33.199 with SMTP id s65mr15073283otb.134.1511371325822; Wed, 22 Nov 2017 09:22:05 -0800 (PST) MIME-Version: 1.0 Received: by 10.168.117.9 with HTTP; Wed, 22 Nov 2017 09:21:45 -0800 (PST) In-Reply-To: References: <42b01a51-eb5a-0a42-70b4-61fb448ef615@gmail.com> From: Tom Ridge Date: Wed, 22 Nov 2017 17:21:45 +0000 Message-ID: To: Sven Anderson Cc: mirageos-devel@lists.xenproject.org Subject: Re: [MirageOS-devel] Current persistent storage situation X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============4976322152444178187==" Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" --===============4976322152444178187== Content-Type: multipart/alternative; boundary="001a1149259effdbbd055e958eb4" --001a1149259effdbbd055e958eb4 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable But if you are happy to have the storage remote from the mirage machine, and running an arbitrary OS, then you have many options to choose from eg just send key-value pair via tcp to remote server running an ocaml listener, then do what you want from there. The consistency/caching aspect of your query really depends on what properties you want (if you are prepared to cache, then you are prepared to receive possibly-stale data presumably... so you have to be a bit more precise about what properties you want). On 21 November 2017 at 17:42, Tom Ridge wrote: > https://github.com/tomjridge/tjr_btree ? It is not hooked into mirage > block device, so that might require some hacking. > > On 14 November 2017 at 17:14, Gabriel de Perthuis > wrote: > >> Hello, >> >> I'm the developer of Wodan. Wodan itself is restricted to fixed-sized >> keys and bounded-size values which might be too constraining for you. I >> am currently working on an Irmin layer on top of it. It's currently in >> a private branch until all tests pass; the chunking approach seems to >> break the existing tests. >> >> Le 14/11/2017 =C3=A0 15:39, Sven Anderson a =C3=A9crit : >> > Hi, >> > >> > TL;DR: what current persistent storage options are out there _now_? >> > >> > for our project (secure private key storage, >> > https://github.com/keyfender) we need a persistent storage for our >> > unikernel application, persistent in the meaning of surviving reboots = of >> > the unikernel. It doesn't have to be necessarily "local" in a sense of >> > writing it to a storage device that the mirage unikernel has direct >> > access to, it could also be another VM, that runs a network daemon tha= t >> > the unikernel is connecting to. The latter would have the advantage of >> > giving us concurrency for multi-core or multi-node for free which we >> > plan to support anyway. >> > >> > The data we need to store has a simple KV structure, for configuration >> > and payload data, the keys are strings, the values are arbitrary ocaml >> > objects, they could be serialized into json though, if necessary. The >> > data amount is rather small, write rarely, read often (but should be >> > cached locally, because of the pretty constant nature of the data). >> > Consistency between different threads/nodes would be more important th= an >> > IO performance. >> > >> > Now the question is: what options do we have, if any? >> > >> > Irmin seems to be a pretty good fit, giving us a distributed storage >> > structure, and IIUC Irmin within MirageOS doesn't store locally but >> > could use a Git server or Non-Mirage-Irmin-Server on another node as >> > persistent storage, is this correct? >> > >> > What other options are out there? the Wodan project >> > (https://github.com/g2p/wodan) is ready for "production"? >> > >> > Are there backends for standard SQL databases, like MariaDB/PostgreSQL= ? >> > >> > Thanks in advance for any pointers and hints! >> > >> > >> > Cheers >> > >> > Sven >> > >> > _______________________________________________ >> > MirageOS-devel mailing list >> > MirageOS-devel@lists.xenproject.org >> > https://lists.xenproject.org/cgi-bin/mailman/listinfo/mirageos-devel >> > >> >> >> _______________________________________________ >> MirageOS-devel mailing list >> MirageOS-devel@lists.xenproject.org >> https://lists.xenproject.org/cgi-bin/mailman/listinfo/mirageos-devel >> > > --001a1149259effdbbd055e958eb4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
But if you are happy to have the storage remote from = the mirage machine, and running an arbitrary OS, then you have many options= to choose from eg just send key-value pair via tcp to remote server runnin= g an ocaml listener, then do what you want from there. The consistency/cach= ing aspect of your query really depends on what properties you want (if you= are prepared to cache, then you are prepared to receive possibly-stale dat= a presumably... so you have to be a bit more precise about what properties = you want).

On 21 November 2017 at 17:42, Tom Ridge <tom.j.ridge@google= mail.com> wrote:
https://github.com/tomjridge/tjr_btree ? It is not hooked into = mirage block device, so that might require some hacking.

On 14 November 2017 at 17:14, Gabriel de Perthuis <g2p.co= de@gmail.com> wrote:
Hello,=

I'm the developer of Wodan.=C2=A0 Wodan itself is restricted to fixed-s= ized
keys and bounded-size values which might be too constraining for you.=C2=A0= I
am currently working on an Irmin layer on top of it.=C2=A0 It's current= ly in
a private branch until all tests pass; the chunking approach seems to
break the existing tests.

Le 14/11/2017 =C3=A0 15:39, Sven Anderson a =C3=A9crit=C2=A0:
> Hi,
>
> TL;DR: what current persistent storage options are out there _now_? >
> for our project (secure private key storage,
> https://github.com/keyfender) we need a persistent storage for = our
> unikernel application, persistent in the meaning of surviving reboots = of
> the unikernel. It doesn't have to be necessarily "local"= in a sense of
> writing it to a storage device that the mirage unikernel has direct > access to, it could also be another VM, that runs a network daemon tha= t
> the unikernel is connecting to. The latter would have the advantage of=
> giving us concurrency for multi-core or multi-node for free which we > plan to support anyway.
>
> The data we need to store has a simple KV structure, for configuration=
> and payload data, the keys are strings, the values are arbitrary ocaml=
> objects, they could be serialized into json though, if necessary. The<= br> > data amount is rather small, write rarely, read often (but should be > cached locally, because of the pretty constant nature of the data). > Consistency between different threads/nodes would be more important th= an
> IO performance.
>
> Now the question is: what options do we have, if any?
>
> Irmin seems to be a pretty good fit, giving us a distributed storage > structure, and IIUC Irmin within MirageOS doesn't store locally bu= t
> could use a Git server or Non-Mirage-Irmin-Server on another node as > persistent storage, is this correct?
>
> What other options are out there? the Wodan project
> (https://github.com/g2p/wodan) is ready for "production&qu= ot;?
>
> Are there backends for standard SQL databases, like MariaDB/PostgreSQL= ?
>
> Thanks in advance for any pointers and hints!
>
>
> Cheers
>
> Sven
>
> _______________________________________________
> MirageOS-devel mailing list
> MirageOS-devel@lists.xenproject.org
> https://lists.xenproject.or= g/cgi-bin/mailman/listinfo/mirageos-devel
>


_______________________________________________
MirageOS-devel mailing list
Mi= rageOS-devel@lists.xenproject.org
https://lists.xenproject.org/cgi-bin/mailman/listinfo/mirageos-devel


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<5e759ee4-ce0c-5d99-bad7-59151afbc97e@somerandomidiot.com> Date: Wed, 22 Nov 2017 11:26:36 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 Content-Language: en-US Subject: [MirageOS-devel] archiving legacy repositories in the mirage github organization on Monday 27 November 2017 X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" SGkgZm9sa3MsCgpEdXJpbmcgYnVnLWNsZWFuaW5nIGRheSB3ZSBub3RpY2VkIG1hbnkgb2xkZXIg cmVwb3NpdG9yaWVzIGluIHRoZSBNaXJhZ2UgCm9yZ2FuaXphdGlvbiBvbiBHaXRIdWIgd2hpY2gg YXBwZWFyIHRvIG5vIGxvbmdlciBiZSBtYWludGFpbmVkLiAgU2luY2UgCnRoZSBiZXN0IHRvb2xz 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(CET) To: mirageos-devel@lists.xenproject.org References: <50172288-40c2-bd9d-e7e3-326c42e96c4a@mehnert.org> <20171123120026.senttchxirh6m3ov@nodbug.lucina.net> From: Hannes Mehnert Message-ID: <45d11800-bbb9-a30d-12c3-250b7fe53606@mehnert.org> Date: Thu, 23 Nov 2017 15:42:27 +0000 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <20171123120026.senttchxirh6m3ov@nodbug.lucina.net> Content-Language: en-US Subject: Re: [MirageOS-devel] supported OCaml versions X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" T24gMjMvMTEvMjAxNyAxMjowMCwgTWFydGluIEx1Y2luYSB3cm90ZToKPiBJTU8gc2hvdWxkIGRl 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10.3 \(3273\)) From: Anil Madhavapeddy In-Reply-To: <45d11800-bbb9-a30d-12c3-250b7fe53606@mehnert.org> Date: Thu, 23 Nov 2017 17:08:12 +0000 Message-Id: References: <50172288-40c2-bd9d-e7e3-326c42e96c4a@mehnert.org> <20171123120026.senttchxirh6m3ov@nodbug.lucina.net> <45d11800-bbb9-a30d-12c3-250b7fe53606@mehnert.org> To: Hannes Mehnert X-Mailer: Apple Mail (2.3273) Cc: mirageos-devel@lists.xenproject.org Subject: Re: [MirageOS-devel] supported OCaml versions X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" T24gMjMgTm92IDIwMTcsIGF0IDE1OjQyLCBIYW5uZXMgTWVobmVydCA8aGFubmVzQG1laG5lcnQu b3JnPiB3cm90ZToKPiAKPiBPbiAyMy8xMS8yMDE3IDEyOjAwLCBNYXJ0aW4gTHVjaW5hIHdyb3Rl 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X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 3219 invoked from network); 27 Nov 2017 22:55:07 -0000 Received: from vm1.a6n.de (HELO vm1.a6n.de) (46.38.236.172) by server-2.tower-206.messagelabs.com with DHE-RSA-AES128-SHA encrypted SMTP; 27 Nov 2017 22:55:07 -0000 Received: from ip5b41b750.dynamic.kabel-deutschland.de ([91.65.183.80] helo=[192.168.2.102]) by vm1.a6n.de with esmtpsa (TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1eJSIp-0000i6-KP; Mon, 27 Nov 2017 23:55:06 +0100 From: Sven Anderson To: Tom Ridge References: <42b01a51-eb5a-0a42-70b4-61fb448ef615@gmail.com> Message-ID: <7ea927dc-fc2f-4b42-23b0-faccf0f98fd2@anderson.de> Date: Mon, 27 Nov 2017 23:55:03 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-SA-Exim-Connect-IP: 91.65.183.80 X-SA-Exim-Mail-From: sven@anderson.de X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on vm1.a6n.de X-Spam-Level: X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham autolearn_force=no version=3.4.0 X-SA-Exim-Version: 4.2.1 (built Sun, 08 Jan 2012 02:45:44 +0000) X-SA-Exim-Scanned: Yes (on vm1.a6n.de) Cc: mirageos-devel@lists.xenproject.org Subject: Re: [MirageOS-devel] Current persistent storage situation X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" QW0gMjIuMTEuMjAxNyB1bSAxODoyMSBzY2hyaWViIFRvbSBSaWRnZSA8dG9tLmoucmlkZ2VAZ29v Z2xlbWFpbC5jb20KPG1haWx0bzp0b20uai5yaWRnZUBnb29nbGVtYWlsLmNvbT4+OgoKPiBCdXQg aWYgeW91IGFyZSBoYXBweSB0byBoYXZlIHRoZSBzdG9yYWdlIHJlbW90ZSBmcm9tIHRoZSBtaXJh 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:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; s= selector1; bh=ngthen0CnzIQSQc3QgEEncIlq9o=; b=HZxBAeW1iLsbyKHGJv U/AIjzzokaVBMbE9B18qtlcnLnRMoGM0Amf5PSvS+rcindpIwBAd6Apqw8ZNjqjf HvvMjh6XCDS1KGGQOC/S9ES429Pdtmf5m7YpoM9cXohmIJGQptOEwj6y8q0428YG RiVcwFMnTUCyEtHH/9QIPyBZw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=recoil.org; h=content-type :mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; q=dns; s= selector1; b=htuYdBNeYDLLF3mFcM7J8GiAwPmtnRaZpIJybU0lrrDIyo+b+Ka SuMEorofYWGv0sYR2lSLLFSiyerUJh0YZW9RnPM1iWl7zFDEOM9e4axrXQLHQbKv Juoil0T+0jSFXWWA2eWN+7z57AX/+3qQIuXVT0n9/7mB1heHCSp1dqxE= Received: by bark.recoil.org (OpenSMTPD) with ESMTPSA id b938b242 (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256:NO); Tue, 28 Nov 2017 12:06:28 +0000 (GMT) Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) From: Anil Madhavapeddy In-Reply-To: <7ea927dc-fc2f-4b42-23b0-faccf0f98fd2@anderson.de> Date: Tue, 28 Nov 2017 12:06:28 +0000 Message-Id: References: <42b01a51-eb5a-0a42-70b4-61fb448ef615@gmail.com> <7ea927dc-fc2f-4b42-23b0-faccf0f98fd2@anderson.de> To: Sven Anderson X-Mailer: Apple Mail (2.3273) Cc: Tom Ridge , mirageos-devel@lists.xenproject.org Subject: Re: [MirageOS-devel] Current persistent storage situation X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" Cj4gT24gMjcgTm92IDIwMTcsIGF0IDIyOjU1LCBTdmVuIEFuZGVyc29uIDxzdmVuQGFuZGVyc29u LmRlPiB3cm90ZToKPiAKPiBBbSAyMi4xMS4yMDE3IHVtIDE4OjIxIHNjaHJpZWIgVG9tIFJpZGdl IDx0b20uai5yaWRnZUBnb29nbGVtYWlsLmNvbQo+IDxtYWlsdG86dG9tLmoucmlkZ2VAZ29vZ2xl bWFpbC5jb20+PjoKPiAKPj4gQnV0IGlmIHlvdSBhcmUgaGFwcHkgdG8gaGF2ZSB0aGUgc3RvcmFn 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<98BB00FB-B799-4A72-9C17-4728E9482449@anderson.de> References: <42b01a51-eb5a-0a42-70b4-61fb448ef615@gmail.com> <7ea927dc-fc2f-4b42-23b0-faccf0f98fd2@anderson.de> To: Anil Madhavapeddy X-SA-Exim-Connect-IP: 91.65.46.12 X-SA-Exim-Mail-From: sven@anderson.de X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on vm1.a6n.de X-Spam-Level: X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham autolearn_force=no version=3.4.0 X-SA-Exim-Version: 4.2.1 (built Sun, 08 Jan 2012 02:45:44 +0000) X-SA-Exim-Scanned: Yes (on vm1.a6n.de) Cc: Tom Ridge , mirageos-devel@lists.xenproject.org Subject: Re: [MirageOS-devel] Current persistent storage situation X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: mirageos-devel-bounces@lists.xenproject.org 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by 10.157.65.213 with SMTP id v21mr3267741oti.392.1511985294069; Wed, 29 Nov 2017 11:54:54 -0800 (PST) MIME-Version: 1.0 Received: by 10.157.2.229 with HTTP; Wed, 29 Nov 2017 11:54:53 -0800 (PST) In-Reply-To: <98BB00FB-B799-4A72-9C17-4728E9482449@anderson.de> References: <42b01a51-eb5a-0a42-70b4-61fb448ef615@gmail.com> <7ea927dc-fc2f-4b42-23b0-faccf0f98fd2@anderson.de> <98BB00FB-B799-4A72-9C17-4728E9482449@anderson.de> From: Thomas Leonard Date: Wed, 29 Nov 2017 19:54:53 +0000 Message-ID: To: Sven Anderson Cc: Tom Ridge , "mirageos-devel@lists.xenproject.org" , Anil Madhavapeddy Subject: Re: [MirageOS-devel] Current persistent storage situation X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" 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with esmtp (Exim 4.84_2) (envelope-from ) id 1eKQ5U-0006Rg-0O for mirageos-devel@lists.xenproject.org; Thu, 30 Nov 2017 14:45:16 +0000 X-Inumbo-ID: 105545de-d5dd-11e7-a335-f15ef82ad0bd Received: from mail-ua0-f173.google.com (unknown [209.85.217.173]) by us1-amaz-eas1.inumbo.com (Halon) with ESMTPS id 105545de-d5dd-11e7-a335-f15ef82ad0bd; Thu, 30 Nov 2017 14:45:09 +0000 (UTC) Received: by mail-ua0-f173.google.com with SMTP id l2so5883141uak.2 for ; Thu, 30 Nov 2017 06:45:09 -0800 (PST) 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; bh=dBNo8PzoKiB6EUpUeV3zsqaMK3H77lmjiYvdLpPmg5E=; b=k9cgrIX1P/+XXkBODk0pkedyDQGMddfxxRYNyygh6ymZThHAzTEA8PV1oq4/NJKJdz Kh83lZrqBahSNWLV28o7gggHsGHUUfP8QD2JxnjLVABXG+Coh3yvZ+UYMBtNej4p75q/ x46/F24TMGcfmpmW0wpDSLe66QYhvMwC6JN/YUyGl86QU9QxywV9k9dSomJwGbE+XPmk ypOqjha0Rq+nMF7dl4uwfCNIJcTZsXwDUFdeRWXaNhQ/Tc264t/f42Ge3LaFoAC6oI6t 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boundary="===============7407402139640087871==" Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" --===============7407402139640087871== Content-Type: multipart/alternative; boundary="089e082502886d2be7055f344ce1" --089e082502886d2be7055f344ce1 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Sven Anderson schrieb am Fr., 24. Nov. 2017 um 20:12 Uhr= : > TL;DR: Irmin_http.KV(Cohttp_mirage.Client)(Irmin.Contents.String) doesn= =E2=80=99t > work, because the default context uses an empty conduit without TCP > support. How to do it right? > > I=E2=80=99m trying to play with the Irmin_http module (as it seems to be = the > closest option with MirageOS to what would otherwise be solved with simpl= e > remote queries to a SQL database from concurrent application instances). > > When I - instead of > Irmin_mem.KV(Cohttp_mirage.Client)(Irmin.Contents.String), which works fi= ne > - use Irmin_http.KV(Cohttp_mirage.Client)(Irmin.Contents.String), the > database queries fail with =E2=80=9ETCP not supported=E2=80=9C errors. Lo= oking at the code, > I saw that the default context is with an empty conduit. Since Irmin_http > doesn=E2=80=99t set a context when calling the Cohttp functions, it uses = this > default context I assume. So, how can I set the context from =E2=80=9Eout= side=E2=80=9C in > Cohttp before instantiating the Irmin_http with it? > In the meantime I managed to get Irmin_http work together with Cohttp_mirage.Client. However, I wonder if it is the right way to do it, and would like to hear comments about it. Since I figured that I need runtime values for the Cohttp_mirage.Client, because the conduit and dns resolver come in as arguments of the start function, I saw no other way than to instantiate the modules in the code path, and I'm not sure if this is an anti-pattern. Also, because I saw no way to replace the default context of the conduit, I "monkey-patched" the module, by defining a new module that includes Cohttp_mirage.Client and overwrites the call function (which is the only one that Irmin_http seems to use) that brings its own context. It looks now something like this: let start _clock data certs http res_dns con =3D let module Client =3D struct include Cohttp_mirage.Client let call ?ctx:_ctx =3D call ~ctx:(ctx res_dns con) end in let module Storage =3D Irmin_http.KV(Client)(Irmin.Contents.String) in [...] Is this acceptable code? Is it possible to solve it with globally defined modules? Is there a nicer way to set the client context, if the http functions are called in 3rd party code (Irmin_http) without setting a context? I also found a weird problem, that I will address in another email. Cheers, Sven --089e082502886d2be7055f344ce1 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Sven Anderson = <sven@anderson.de> schrieb am= Fr., 24. Nov. 2017 um 20:12=C2=A0Uhr:
TL;DR: Irmin_http.KV(Cohttp_mirage.Client)(Irmin.Contents.String) doesn= =E2=80=99t work, because the default context uses an empty conduit without = TCP support. How to do it right?

I=E2=80=99m trying to play with the Irmin_http module (as it seems to be th= e closest option with MirageOS to what would otherwise be solved with simpl= e remote queries to a SQL database from concurrent application instances).<= br>
When I - instead of Irmin_mem.KV(Cohttp_mirage.Client)(Irmin.Contents.Strin= g), which works fine - use Irmin_http.KV(Cohttp_mirage.Client)(Irmin.Conten= ts.String), the database queries fail with =E2=80=9ETCP not supported=E2=80= =9C errors. Looking at the code, I saw that the default context is with an = empty conduit. Since Irmin_http doesn=E2=80=99t set a context when calling = the Cohttp functions, it uses this default context I assume. So, how can I = set the context from =E2=80=9Eoutside=E2=80=9C in Cohttp before instantiati= ng the Irmin_http with it?

In the meant= ime I managed to get=C2=A0Irmin_http work together with=C2=A0Cohttp_mirage.= Client. However, I wonder if it is the right way to do it, and would like t= o hear comments about it. Since I figured that I need runtime values for th= e=C2=A0Cohttp_mirage.Client, because the conduit and dns resolver come in a= s arguments of the start function, I saw no other way than to instantiate t= he modules in the code path, and I'm not sure if this is an anti-patter= n. Also, because I saw no way to replace the default context of the conduit= , I "monkey-patched" the module, by defining a new module that in= cludes=C2=A0Cohttp_mirage.Client and overwrites the call function (which is= the only one that=C2=A0Irmin_http seems to use) that brings its own contex= t. It looks now something like this:

let star= t _clock data certs http res_dns con =3D
=C2=A0 =C2=A0 let module= Client =3D
=C2=A0 =C2=A0 struct
=C2=A0 =C2=A0 =C2=A0 i= nclude Cohttp_mirage.Client
=C2=A0 =C2=A0 =C2=A0 let call ?ctx:_c= tx =3D call ~ctx:(ctx res_dns con)
=C2=A0 =C2=A0 end
= =C2=A0 =C2=A0 in
=C2=A0 =C2=A0 let module Storage =3D Irmin= _http.KV(Client)(Irmin.Contents.String) in
=C2=A0 =C2=A0 [...]

Is this acceptable code? Is it possible to solve it = with globally defined modules? Is there a nicer way to set the client conte= xt, if the http functions are called in 3rd party code (Irmin_http) without= setting a context?

I also found a weird problem, = that I will address in another email.

Cheers,

Sven
--089e082502886d2be7055f344ce1-- --===============7407402139640087871== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTWlyYWdlT1Mt ZGV2ZWwgbWFpbGluZyBsaXN0Ck1pcmFnZU9TLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0 dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby9taXJhZ2Vvcy1kZXZl bAo= --===============7407402139640087871==-- From mirageos-devel-bounces@lists.xenproject.org Thu Nov 30 15:41:47 2017 Return-path: Envelope-to: archives@lists.xenproject.org Delivery-date: Thu, 30 Nov 2017 15:41:47 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eKQy5-00032p-Ub; Thu, 30 Nov 2017 15:41:41 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eKQy4-00032j-KI for mirageos-devel@lists.xenproject.org; Thu, 30 Nov 2017 15:41:40 +0000 X-Inumbo-ID: ed32177c-d5e4-11e7-b4a6-bc764e045a96 Received: from mail-vk0-f43.google.com (unknown [209.85.213.43]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id ed32177c-d5e4-11e7-b4a6-bc764e045a96; Thu, 30 Nov 2017 16:41:27 +0100 (CET) Received: by mail-vk0-f43.google.com with SMTP id x140so3676486vke.4 for ; Thu, 30 Nov 2017 07:41:38 -0800 (PST) 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; bh=8vae2gkDUmopVukrfGfZ0gLTmBPNoICDvKdpE23/Yqc=; b=NcK9sje7pQsGCmTagHnVXubMxQeSZHVCgiwwIfDiqyw14Fn46cv+Rf/6OYOxecJ9I3 9l7h961hPyAe79a6mxPNx9+kUmdt4p7bBMJ+jm7I3B/jhRZzkKksRo/YsWHGWkkrdf1n sLNuGA+Aih2PgeAWd+8ZWoTAhX/v9vPZCZ7ZXoYtyhGvRqdxVcEDhQ5EQPKTgo/a0+W9 lSpU8AF0UM0qzD6On/x8adLfpJkgjClzlfa40VdLHJS9cnpvjgJU/qcWCWr+SB4NhC3G I96PrsIyifyxuPsrOxe9abCVJpp9fPMLO6ibc2h5u8+an/fLRetzeaj/ME6/Pbc2H+RH UHRw== X-Gm-Message-State: AKGB3mKDduDb4bkeoUNi7EuI9AZTCc2vOT9cNZmD5IJAPW/clK5+1cfN IzXi8s5QMOp5F8UMAdHbpL8o33Mf/hkz7ECSJDs= X-Google-Smtp-Source: AGs4zMbVOKpQJ/GUvEUVHtZRc1yOG1Qe2ZG+1w3WMPQB4UcU8tagSQe24ZU5O1eJcgcqpyi4KrhABRQTd+9lobJMNhw= X-Received: by 10.31.217.3 with SMTP id q3mr2074948vkg.116.1512056497569; Thu, 30 Nov 2017 07:41:37 -0800 (PST) MIME-Version: 1.0 References: <46FA2CAC-C98A-46BD-BEF2-212C241034AD@anderson.de> In-Reply-To: <46FA2CAC-C98A-46BD-BEF2-212C241034AD@anderson.de> From: Sven Anderson Date: Thu, 30 Nov 2017 15:41:26 +0000 Message-ID: To: mirageos-devel@lists.xenproject.org Subject: [MirageOS-devel] Unix.Unix_error(Unix.EBADF, "check_descriptor", "") (was: Irmin_http with Cohttp_mirage) X-BeenThere: mirageos-devel@lists.xenproject.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Developer list for MirageOS List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1274384493752767295==" Errors-To: mirageos-devel-bounces@lists.xenproject.org Sender: "MirageOS-devel" --===============1274384493752767295== Content-Type: multipart/alternative; boundary="94eb2c07be586b3692055f3516b4" --94eb2c07be586b3692055f3516b4 Content-Type: text/plain; charset="UTF-8" In the meantime I managed to get Irmin_http work together with Cohttp_mirage.Client (see other mail), but: When I'm running my test suite against a unix-socket version of the unikernel, it eventually crashes with a weird exception 'Fatal error: exception Unix.Unix_error(Unix.EBADF, "check_descriptor", "")'. Of course it doesn't happen, if I run the kernel as a ukvm instance. I tried to catch the exception by wrapping all Irmin_http function calls with Lwt.catch()(), but without success. Also worth to note is, that I see the exception several times before, where it doesn't crash the unikernel, so it is actually caught in the cases before, but eventually there comes an event, where it is not caught. It's also not always the same moment during the test, but seems to depend on a racey condition. (Btw, http server and client are using the same conduit, but that shouldn't be a problem, right?) Here's the not so interesting backtrace: 2017-11-30 02:51:00 +01:00: INF [https] [1] serving //localhost:8080/api/v0/keys/myId123/actions/decrypt. 2017-11-30 02:51:00 +01:00: DBG [irmin.http] GET /branch/master Fatal error: exception Unix.Unix_error(Unix.EBADF, "check_descriptor", "") Raised at file "lwt_unix.cppo.ml", line 362, characters 4-64 Called from file "lwt_unix.cppo.ml", line 610, characters 28-47 Called from file "src/core/lwt.ml", line 2073, characters 21-28 Called from file "src/cohttp_mirage.ml", line 50, characters 41-59 Called from file "map.ml", line 196, characters 19-42 Called from file "src/unix/lwt_engine.ml", line 344, characters 16-68 Called from file "src/unix/lwt_main.ml", line 40, characters 4-78 Called from file "main.ml", line 170, characters 5-10 Some research shows that I'm not the first one seeing this, but unfortunately in the other cases the problem "mysteriously" disappeared. [1][2][3] Also Tom Ridge and Hannes talked about the topic recently. [4] Looking at the Lwt code[5] I'm a bit confused that raise and Lwt.fail are somehow used interchangeably. I'm still not sure that I understood how to deal correctly with exceptions in Lwt. :-/ So is that a bug in Lwt, or Irmin is not handling the exceptions correctly, or I must have missed a spot where I should catch it? Thanks for any hints or comments! Cheers, Sven [1] https://github.com/frenetic-lang/ocaml-openflow/issues/25 [2] https://github.com/openvstorage/arakoon/issues/203 [3] https://github.com/moby/vpnkit/issues/156 [4] https://discuss.ocaml.org/t/system-calls-unix-close-signals-eintr/972 [5] https://github.com/ocsigen/lwt/blob/master/src/unix/lwt_unix.cppo.ml#L368 --94eb2c07be586b3692055f3516b4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
In the meantime I managed to get Irmin_http work together = with Cohttp_mirage.Client (see other mail), but:

When I&= #39;m running my test suite against a unix-socket version of the unikernel,= it eventually crashes with a weird exception 'Fatal error: exception U= nix.Unix_error(Unix.EBADF, "check_descriptor", "")'= . Of course it doesn't happen, if I run the kernel as a ukvm instance. = I tried to catch the exception by wrapping all Irmin_http function calls wi= th Lwt.catch()(), but without success. Also worth to note is, that I see th= e exception several times before, where it doesn't crash the unikernel,= so it is actually caught in the cases before, but eventually there comes a= n event, where it is not caught. It's also not always the same moment d= uring the test, but seems to depend on a racey condition. (Btw, http server= and client are using the same conduit, but that shouldn't be a problem= , right?) Here's the not so interesting backtrace:

2017-11-30 02= :51:00 +01:00: INF [https] [1] serving //localhost:8080/api/v0/keys/myId123= /actions/decrypt.
2017-11-30 02:51:00 +01:00: DBG [irmin.http] GET /bran= ch/master
Fatal error: exception Unix.Unix_error(Unix.EBADF, "check= _descriptor", "")
Raised at file "lwt_unix.cppo.ml", line 362, characters 4-64
= Called from file "lwt_unix.cppo.ml= ", line 610, characters 28-47
Called from file "src/core/<= a href=3D"http://lwt.ml">lwt.ml", line 2073, characters 21-28
C= alled from file "src/cohttp_mirage= .ml", line 50, characters 41-59
Called from file "map.ml", line 196, characters 19-42
Called f= rom file "src/unix/lwt_engine.ml&= quot;, line 344, characters 16-68
Called from file "src/unix/lwt_main.ml", line 40, characters 4-78Called from file "main.ml", line = 170, characters 5-10


Some research shows that I'm not the fi= rst one seeing this, but unfortunately in the other cases the problem "= ;mysteriously" disappeared. [1][2][3]

Also Tom Ridge and Hanne= s talked about the topic recently. [4]

Looking at the Lwt code[5] I&= #39;m a bit confused that raise and Lwt.fail are somehow used interchangeab= ly. I'm still not sure that I understood how to deal correctly with exc= eptions in Lwt. :-/

So is that a bug in Lwt, or Ir= min is not handling the exceptions correctly, or I must have missed a spot = where I should catch it?

Thanks for any hints or comments!<= /div> --94eb2c07be586b3692055f3516b4-- --===============1274384493752767295== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTWlyYWdlT1Mt ZGV2ZWwgbWFpbGluZyBsaXN0Ck1pcmFnZU9TLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0 dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby9taXJhZ2Vvcy1kZXZl bAo= --===============1274384493752767295==--