Re: [Xen-users] DomU hangs sporadically

[Jonathan Weismann <jweismann@xxxxxxxxx>]

Thanks for the response Phil,

                                      It was my understanding that redhat backported all current fixes to the current build and just left the 3.0.3 as the "current" build. My current hardware architecture is rather "old" IBM xseries servers (8 cpu Xeons 16GB of RAM, 2 Dual port Gigabit NICs).

I'll try that "fix" but that is only for the Dom0 domain not the DomU. It was my belief that I am routing all my xen traffic out the different network ports instead of one central port. Would this "fix" then have to be applied across each DomU?

Would upgrading to 3.2 work any differently? Are they any fixes or patches in there that would solve this problem? I'm still pegging it on the driver in Xen for my network cards, still can't seem to understand how it deals with the drivers.

Message: 3
Date: Wed, 21 Jan 2009 07:42:32 +0000
From: Phil Driscoll <phil@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] DomU hangs sporadically
To: xen-users@xxxxxxxxxxxxxxxxxxx
Message-ID: <200901210742.32762.phil@xxxxxxxxxxxxxxxxxxx>
Content-Type: text/plain;  charset="iso-8859-15"

On Tuesday 20 January 2009, Jonathan Weismann wrote:
> All,
>           After much combing the web I've come to my wits end regarding
> this issue.
>
> I have 3 virtual environments all running on separate network cards,
> bridges, and virtual interfaces.  Sporadically, they will stop responding
> to external connections and just sit there then pick themselves back up.
> Users are complaining of speed problems, hangups, and performance problems.
>
> I am using the stock xen kernel, rpms, modules I get from CentOS so this is
> a 3.03 with backported fixes.
>
> Host system: CentOS 5.2 2.6.18-92.1.22.el5xen #1 SMP Tue Dec 16 13:08:49
> EST 2008 i686 i686 i386 GNU/Linux

Hi Jonathan

The system you're running may be too new to be suffering from this MTU related
problem, but it might be worth reading this posting:

http://lists.xensource.com/archives/html/xen-devel/20

--
Phil Driscoll

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