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jurrien
15-May-2017, 15:36
Hi all,

I have Suse Cloud 6 installed with shared storage so I can test Live Migration. When I test Live Migration the instance status is changed to Shutoff and the power state is Shut Down.

I checked the logs of the nova computes nodes and the controller and the online message that is a not an INFO is:

2017-05-15 16:21:02.463 1588 WARNING nova.compute.manager [req-ac5fd5e2-db24-459f-b045-fad4bfbccc2a - - - - -] [instance: e4932875-c71d-4f5d-b561-a5c61ce1f1c8] Instance shutdown by itself. Calling the stop API. Current vm_state: active, current task_state: None, original DB power_state: 4, current VM power_state: 4

This is not really what I expected. I would assume that the instance is running on the other node. It is migrated to the other host but it is shutdown.

Any idea what's going on?

smflood
15-May-2017, 17:29
On 15/05/17 15:44, jurrien wrote:

> I have Suse Cloud 6 installed with shared storage so I can test Live
> Migration. When I test Live Migration the instance status is changed to
> Shutoff and the power state is Shut Down.
>
> I checked the logs of the nova computes nodes and the controller and the
> online message that is a not an INFO is:
>
> 2017-05-15 16:21:02.463 1588 WARNING nova.compute.manager
> [req-ac5fd5e2-db24-459f-b045-fad4bfbccc2a - - - - -] [instance:
> e4932875-c71d-4f5d-b561-a5c61ce1f1c8] Instance shutdown by itself.
> Calling the stop API. Current vm_state: active, current task_state:
> None, original DB power_state: 4, current VM power_state: 4
>
> This is not really what I expected. I would assume that the instance is
> running on the other node. It is migrated to the other host but it is
> shutdown.
>
> Any idea what's going on?

Which hypervisor are your Compute Nodes running? KVM or Xen?

Is 'Live Migration Support: Enable Libvirt Migration' enabled in the
Dashboard for Nova?

If your Compute Nodes are Xen have you enabled 'Live Migration Support:
Setup Shared Storage' in the Dashboard for Nova?

HTH.
--
Simon
SUSE Knowledge Partner

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jurrien
15-May-2017, 18:26
Hi Simon,

It is KVM.

Yes, Live Migration is enabled.

By Dashboard you mean Crowbar (Admin server) right? Ifso: Yes :-)

It's KVM so I have mounted a NFS share under /var/lib/nova/instances on both compute hosts.

jurrien
16-May-2017, 08:35
Oke this is weird...

Start reading some other posts from 2016: http://lists.openstack.org/pipermail/openstack-operators/2016-September/011669.html

I didn't had anything so lose so I tested mem_stats_period_seconds = 0 in nova.conf.

And now the Live Migration works!