Thanks for the prompt reply.
I assume I can safely ignore the "Upgrade cluster compatibility" warning
until libvirt 6.6 gets pushed to CentOS 8.3?

- Gilboa

On Wed, Dec 16, 2020 at 5:56 PM Martin Perina <mper...@redhat.com> wrote:

>
>
> On Wed, Dec 16, 2020 at 2:25 PM Gilboa Davara <gilb...@gmail.com> wrote:
>
>> Shani,
>>
>> 1. I created a new 4.5 cluster with the same CPU (Secure Intel
>> Cascadelake Server Family) and platform type (Q35/BIOS).
>> 2. All 3 hosts are 8.3, but report 4.4 compatibility.
>> 3. The only reason I attempted to upgrade the cluster was simple: The
>> cluster state kept on dropping down to "unavailable" (even though all 3
>> hosts are up) and I was offered to upgrade the cluster to v4.5.
>>
>> - Gilboa
>>
>> On Wed, Dec 16, 2020 at 1:28 PM Shani Leviim <slev...@redhat.com> wrote:
>>
>>> Hi Gilboa,
>>>
>>> Here are some guidelines/checks:
>>> - Are you able to create a 4.5 DC/cluster?
>>> - Host can be Up in the 4.5 clusters only when it reports 4.5 level
>>> compatibility (it's based on RHEL 8.3).
>>>   Can you make sure that on all 3 hosts?
>>> - You can upgrade the 4.4 clusters to 4.5 only when all
>>> Up/NonOperational hosts are reporting 4.5 level
>>> - You can upgrade 4.4 DC to 4.5 only when all clusters inside are on the
>>> 4.5 level
>>> - A 4.5 host-based on RHEL 8.3 should be fully functional in 4.2/4.3/4.4
>>> clusters
>>>
>>>
>>>
>>> *Regards,*
>>>
>>> *Shani Leviim*
>>>
>>>
>>> On Wed, Dec 16, 2020 at 12:53 PM Gilboa Davara <gilb...@gmail.com>
>>> wrote:
>>>
>>>> Hello all,
>>>>
>>>> I'm more-or-less finished building a new ovirt over glusterfs cluster
>>>> with 3 fairly beefy servers.
>>>> Nodes were fully upgraded to CentOS Linux release 8.3.2011 before they
>>>> joined the cluster.
>>>> Looking at the cluster view in the WebUI, I get an exclamation mark
>>>> with the following message: "Upgrade cluster compatibility level".
>>>> When I try to upgrade the cluster, 2 of the 3 hosts go into maintenance
>>>> and reboot, but once the procedure is complete, the cluster version remains
>>>> the same.
>>>> Looking at the host vdsm logs, I see that once the engine refreshes
>>>> their capabilities, all hosts return 4.2-4.4 and not 4.5.
>>>>
>>>> E.g.
>>>>  'supportedENGINEs': ['4.2', '4.3', '4.4'], 'clusterLevels': ['4.2',
>>>> '4.3', '4.4']
>>>> I assume I should be seeing 4.5 after the upgrade, no?
>>>>
>>>> AmI missing something?
>>>>
>>>
> EL 8.3 is not enough, you also need Advanced Virtualization 8.3 (in
> particular libvirt 6.6)
>
>>
>>>> Thanks,
>>>> - Gilboa
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>>>>
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>
>
> --
> Martin Perina
> Manager, Software Engineering
> Red Hat Czech s.r.o.
>
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