[CentOS-virt] Xen on Centos 5.5 vs 5.3 and stability issues
Pasi Kärkkäinen
pasik at iki.fi
Thu Oct 28 10:37:17 EDT 2010
On Thu, Oct 28, 2010 at 01:56:33PM +1300, Steven Ellis wrote:
> I've recently upgraded a Centos 5.3 machine to Centos 5.5. The hardware
> isn't HVM capabile so I'm only running para-virt guests.
>
> Using a vanilla i386 kernel boots without, but the newer kernel-xen locks
> up the Dom0 after a couple of minute. I'm only booting into single user
> mode for these tests so no VMs are active.
>
> * kernel-xen-2.6.18-128.1.10.el5 - no issues
> * kernel-xen-2.6.18-194.17.4.el5 - lock up
> * kernel-2.6.18-194.17.4.el5 - no issues
>
> For the moment I've switched back to the older Xen kernel, athough I'm
> still running the newer Xen Hypervisor.
>
Please set up a serial console and capture the full error/crash messages
and post the log here.
Examples here:
http://wiki.xensource.com/xenwiki/XenSerialConsole
-- Pasi
> My current Xen packages are
>
> * xen-3.0.3-105.el5_5.5
> * kernel-xen-2.6.18-194.17.4.el5
> * kernel-xen-2.6.18-128.1.10.el5
> * kmod-xfs-xen-0.4-2
> * xen-libs-3.0.3-105.el5_5.5
> * kernel-xen-devel-2.6.18-194.17.4.el5
> * kernel-xen-devel-2.6.18-128.1.10.el5
> * xen-devel-3.0.3-105.el5_5.5
>
> Prior to the upgrade I had the following installed under Centos 5.3
>
> * kernel-xen-devel-2.6.18-128.1.6.el5
> * kernel-xen-2.6.18-128.1.10.el5
> * xen-libs-3.0.3-80.el5_3.2
> * xen-devel-3.0.3-80.el5_3.2
> * kmod-xfs-xen-0.4-2
> * kernel-xen-2.6.18-128.1.6.el5
> * kernel-xen-devel-2.6.18-128.1.10.el5
> * xen-3.0.3-80.el5_3.2
>
> Booting Dom0 with kernel-xen-2.6.18-128.1.10.el5 everything appears to
> work normally and all of my Guests are up and running.
>
> If I boot with kernel-xen-2.6.18-194.17.4.el5 the boot normally gets to
> around udev and the system locks up. On a couple of occasions it did mange
> to boot but reported some files were corrupted. I'm worried that there is
> an issue running this kernel where the root file system is LVM on top of
> Raid 1.
>
> Anyone on this list have tips on diagnosing the issue, or come across a
> similar problem themselves.
>
> Steve
>
>
>
>
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