[ovirt-users] Frequent vm migration failure

[Michal Skrivanek]

> On 12 Apr 2018, at 18:26, Stefano Stagnaro <stefanos at prismatelecomtesting.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/xhf8ry4ih40poxd/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>?

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/migration-enhancements/ <https://www.ovirt.org/develop/release-management/features/virt/migration-enhancements/>

Thanks,
michal

> 
> 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
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