Do you have power management configured? Was the "failed" host fenced/rebooted? On Fri, Apr 4, 2014 at 2:21 PM, Koen Vanoppen <vanoppen.koen@gmail.com>wrote:
So... It is possible for a fully automatic migration of the VM to another hypervisor in case Storage connection fails? How can we make this happen? Because for the moment, when we tested the situation they stayed in pause state. (Test situation:
- Unplug the 2 fibre cables from the hypervisor - VM's go in pause state - VM's stayed in pause state until the failure was solved
)
They only returned when we restored the fiber connection to the Hypervisor...
Kind Regards,
Koen
2014-04-04 13:52 GMT+02:00 Koen Vanoppen <vanoppen.koen@gmail.com>:
So... It is possible for a fully automatic migration of the VM to another hypervisor in case Storage connection fails? How can we make this happen? Because for the moment, when we tested the situation they stayed in pause state. (Test situation:
- Unplug the 2 fibre cables from the hypervisor - VM's go in pause state - VM's stayed in pause state until the failure was solved
)
They only returned when we restored the fiber connection to the Hypervisor...
Kind Regards,
Koen
2014-04-03 16:53 GMT+02:00 Koen Vanoppen <vanoppen.koen@gmail.com>:
---------- Forwarded message ----------
From: "Doron Fediuck" <dfediuck@redhat.com> Date: Apr 3, 2014 4:51 PM Subject: Re: [Users] HA To: "Koen Vanoppen" <vanoppen.koen@gmail.com> Cc: "Omer Frenkel" <ofrenkel@redhat.com>, <users@ovirt.org>, "Federico Simoncelli" <fsimonce@redhat.com>, "Allon Mureinik" <amureini@redhat.com
From: "Koen Vanoppen" <vanoppen.koen@gmail.com> To: "Omer Frenkel" <ofrenkel@redhat.com>, users@ovirt.org Sent: Wednesday, April 2, 2014 4:17:36 PM Subject: Re: [Users] HA
Yes, indeed. I meant not-operational. Sorry. So, if I understand this correctly. When we ever come in a situation
loose both storage connections on our hypervisor, we will have to manually restore the connections first?
And thanx for the tip for speeding up thins :-).
Kind regards,
Koen
2014-04-02 15:14 GMT+02:00 Omer Frenkel < ofrenkel@redhat.com > :
----- Original Message -----
From: "Koen Vanoppen" < vanoppen.koen@gmail.com > To: users@ovirt.org Sent: Wednesday, April 2, 2014 4:07:19 PM Subject: [Users] HA
Dear All,
Due our acceptance testing, we discovered something. (Document will follow). When we disable one fiber path, no problem multipath finds it way no
are lost. BUT when we disabled both the fiber paths (so one of the storage domain is gone on this host, but still available on the other host), vms go in
----- Original Message ----- that we pings paused
mode... He chooses a new SPM (can we speed this up?), put's the host in non-responsive (can we speed this up, more important) and the VM's stay on Paused mode... I would expect that they would be migrated (yes, HA is
i guess you mean the host moves to not-operational (in contrast to non-responsive)? if so, the engine will not migrate vms that are paused to do io error, because of data corruption risk.
to speed up you can look at the storage domain monitoring timeout: engine-config --get StorageDomainFalureTimeoutInMinutes
enabled) to the other host and reboot there... Any solution? We are still using oVirt 3.3.1 , but we are planning a upgrade to 3.4 after the easter holiday.
Kind Regards,
Koen
Hi Koen, Resuming from paused due to io issues is supported (adding relevant folks). Regardless, if you did not define power management, you should manually approve source host was rebooted in order for migration to proceed. Otherwise we risk split-brain scenario.
Doron
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