[ovirt-users] vms stucked after migrate from 4.1.0 to 4.1.1 host

[Jiří Sléžka]

On 03/28/2017 12:34 AM, Jiří Sléžka wrote:
> Hi all,
> 
> I have just upgraded ovirt manager from 4.1.0 to 4.1.1, then I have
> upgraded one host. After reboot and activation of this host some vms
> started to migrate here.
> 
> Some time after migration CPU of this vms go to 100% and vms become
> unreachable.
> 
> There is /var/log/libvirt/qemu/hypnos.log (hypnos is one of this vms)
> https://pastebin.com/U30xfBMJ
> 
> Powering off and starting again solve this but I would like to have a
> glue what is happening.
> 
> I suspect this line
> 
> 2017-03-27T22:09:23.746710Z qemu-kvm: warning: TSC frequency mismatch
> between VM (2600031 kHz) and host (2100024 kHz), and TSC scaling unavailable
> 
> Original host uses "AMD Opteron(TM) Processor 6238" with "cpu MHz:
> 2600.113" and upgraded host uses "AMD Opteron(tm) Processor 6172" with
> "cpu MHz: 2100.097".

It looks like it isn't problem with 4.1.1 at all.

There is just missing tsc_scale cpu flag on our older AMD CPUs...

http://unix.stackexchange.com/questions/296636/100-cpu-utilisation-and-hang-after-virsh-migrate

This is probably unsolvable hw problem, right?

Cheers,

Jiri

> 
> Cheers,
> 
> Jiri
> 
> 
> 
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> http://lists.ovirt.org/mailman/listinfo/users
> 


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