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RE: [Xen-users] Frequent para (Linux) domU hangs

To: "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Frequent para (Linux) domU hangs
From: Nathan Eisenberg <nathan@xxxxxxxxxxxxxxxx>
Date: Tue, 22 Sep 2009 15:53:04 -0700
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Thread-topic: [Xen-users] Frequent para (Linux) domU hangs
> -----Original Message-----
> From: Jan Bakuwel [mailto:jan.bakuwel@xxxxxxxxx]
> Sent: Tuesday, September 22, 2009 3:05 PM
> To: Nathan Eisenberg
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Frequent para (Linux) domU hangs
> Hi Nathan,
> Lets see if we can find similarities. I'm running Debian Lenny
> 2.6.26-1-xen-amd64, so 64bit dom0. I'm only running para Debian Lenny
> 64bit domUs (can't be more straightforward). All domUs run without swap
> (to prevent potential disc trashing as they're all on the same RAID-6
> volume). Xen 3.2-1 I've got two out of five VMs that frequently hang
> (once every few days).
> What's your situtation?
> Jan

Hey Jan,

Dom0 is Debian Etch amd64 (haven't upgraded this Dom0 yet) running 
2.6.26-bpo.1-xen-amd64.  Xen version is xen-3.2-1-amd64.  Plenty of leftover 
memory and swap.

DomU is Centos 5.3 Final amd64, running the dom0's kernel 
(2.6.26-bpo.1-xen-amd64).  DomU has lots of memory and plenty of swap (added 
because I suspected it may have been a problem).

One possibility I am beginning to suspect is that domU may be filling up /tmp 
(using /usr/tmpDSK for some reason).  Not sure on that, though.  I may try 
removing that from the fstab and see if stability improves...

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