[ovirt-users] Frequent vm migration failure

[Stefano Stagnaro]

On Thu, 2018-04-12 at 20:20 +0200, Michal Skrivanek wrote:
> > On 12 Apr 2018, at 18:26, Stefano Stagnaro <stefanos at prismatelecomt
> > esting.com> wrote:
> > Hi,
> > 
> > I recently upgraded an oVirt deployment from 3.6 to 4.0 and then
> > 4.1.9 (my actual release). Since then, when migrating many hosts
> > simultaneously I always experience few migrations failure like 1 on
> > 10 vms. The failure can occur on any host; moreover, after a couple
> > of failure the destination host fall in Error status and I have to
> > manually re-activate or wait 30 min.
> > 
> > Tipical error found on vdsm log is (from the source host):
> > 2018-04-12 17:01:32,097+0200 ERROR (migsrc/3192dfe7) [virt.vm]
> > (vmId='3192dfe7-eeac-4626-8c86-e49facc9006f') migration destination
> > error: Fatal error during migration (migration:287)
> > 
> > Please find the logs of source host (v15.ovirt), destination host
> > (v14.ovirt) and engine here: https://www.dropbox.com/sh/xhf8ry4ih40
> > poxd/AABxiFCIxDe14HSx2DqLE61ya?dl=0
> > 
> > Some of the vm affected from the migration failure are:
> > svn	3192dfe7-eeac-4626-8c86-e49facc9006f
> > wood	a8e83ff0-dfed-4074-b6b6-e947b8ebb952
> > qnx66	5697c4a4-9e40-4dd6-aba2-c8ab9904a584
> 
> can you also include qemu log from /var/log/libvirt/qemu/<vmname>?

Hi Michal, I've added libvirt logs for relevant VMs on the previous
Dropbox share.
> btw you seem to be using the legacy migration policy throttling the
> speed significantly. Please read into the migration enhancements in
> 4.0
> https://www.ovirt.org/develop/release-management/features/virt/migrat
> ion-enhancements/

I've already moved to Minimal Downtime and then to Post-copy with same
results. VM migrations continue to fail randomly.
> Thanks,
> michal

Thanks,Stefano.

> > Thank you very much for your help.
> > 
> > -- 
> > Stefano Stagnaro
> > 
> > Prisma Telecom Testing S.r.l.
> > Via Petrocchi, 4
> > 20127 Milano – Italy
> > 
> > Tel. 02 26113507 int 339
> > e-mail: stefanos at prismatelecomtesting.com
> > skype: stefano.stagnaro
> > _______________________________________________
> > Users mailing list
> > Users at ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/users
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