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Re: [Xen-users] Live migration OOPS

On 23/09/13 14:37, Matt Baker wrote:
> Hi all,
> I am running Debian Squeeze with a back ported
> kernel 3.2.0-0.bpo.4-amd64. The cluster is managed by ganeti.
> Hardware:
> Source:
> Dell r510 64Gb RAM
> Destination:
> Dell r720 192Gb RAM
> When live migrating VMs from an older machine to the newer one I get a
> kernel oops and the VM seems to not recover from being restored.
> It looks similar to 
> http://lists.xenproject.org/archives/html/xen-devel/2011-07/msg00020.html
> If I start it on a smaller system and migrate to the larger one it fails.
> If I start the VM on the larger host and migrate back it works. If I
> then migrate back to the larger host it works.
> If I remove memory from the newer machine making it have 64Gb I can live
> migrate VMs to it.
> Can anyone advise a solution? I notice there are possible fixes for this
> but unsure from the threads what is the current status of the patches,
> which versions of Xen/linux kernel this should work with.
> http://lists.xenproject.org/archives/html/xen-devel/2011-07/msg00367.html

For info, I've rebuilt the backported kernel with the trivial patch and
that seems to work for us (for now).

If anyone has any info on what versions this should be fixed in future
releases that would be most helpful.



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