[ovirt-users] oVirt 4.0.0 - Cluster Compatibility Version

[Roy Golan]

On Fri, Jun 24, 2016 at 9:19 AM, Michal Skrivanek <mskrivan at redhat.com>
wrote:

>
> On 24 Jun 2016, at 08:15, Sandro Bonazzola <sbonazzo at redhat.com> wrote:
>
>
>
> On Fri, Jun 24, 2016 at 12:08 AM, Scott <romracer at gmail.com> wrote:
>
>> Hello list,
>>
>> I've successfully upgraded oVirt to 4.0 from 3.6 on my engine and three
>> hosts.  However, it doesn't look like I can change the Cluster
>> Compatibility Version to 4.0.  It tells me I need to shut down all the VMs
>> in the cluster.  Except I use Hosted Engine.  How do I change the cluster
>> compatibility version when the engine is down?
>>
>
> We're on it, tracked by
> https://bugzilla.redhat.com/show_bug.cgi?id=1348907 (During cluster level
> upgrade - warn and mark VMs as pending a configuration change when they are
> running)
>
>
> While that’s in progress, I’m still not clear whether that is a real
> blocker for this flow or not as Roy/Didi was saying due to HE having it’s
> own separate configuration the set of hosts it runs on does not necessarily
> have to follow the engine’s view of the cluster. So I don’t really know
> what’s required for HE to change its cluster
>
>
We need a fix for the engine to allow migrating HE 3.6 to 4.0 and upgarfde
of that cluster compat level - If we want to upgrade the HE cluster version
the HE-VM itself must move away to a new  cluster. Migrating to a new
cluster is supported, but not the ChangeVmCluster action on hosted engine
vm.  The VM will effectively run on another host (and cluster) but the ID
will remain of the old cluster.

See bug https://bugzilla.redhat.com/show_bug.cgi?id=1351533

BTW, 1348907 fix won't help, cause the engine vm itself won't leave to
perform this change. The engine never sees itself as starting or stopping.


Thanks,
> michal
>
>
>
>
>
>>
>> Thanks in advance,
>> Scott
>>
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>>
>
>
> --
> Sandro Bonazzola
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>
>
>
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