On 9 Feb 2019, at 02:53, Juhani Rautiainen <juhani.rautiainen@gmail.com> wrote:

On Sat, Feb 9, 2019 at 1:05 AM Vinícius Ferrão
<ferrao@versatushpc.com.br> wrote:

Hello,

For reasons unknown during oVirt 4.2 -> 4.3 my CPU type was Broadwell IBRS and because of this I can’t upgrade the datacenter to 4.3. The problem was that on 4.3 theres only Broadwell IBRS SSBD and Broadwell.

So the only way to up the cluster to 4.3 was to downgrade to plain Broadwell.

Now I can’t upgrade it Broadwell IBRS SSBD.

So, how can I upgrade it back?

There has been lot's of discussion about that this week. I had same
problem with Opteron G3->Epyc conversion. There steps were suggested
to me and they worked and you problem is similar:

- set HE global maintenance mode
- set one of the hosted-engine hosts into maintenance mode
- move it to a different cluster
- shutdown the engine VM
- manually restart the engine VM on the host on the custom cluster
directly executing on that host: hosted-engine --vm-start
- connect again to the engine
- set all the hosts of the initial cluster into maintenance mode
- upgrade the cluster
- shut down again the engine VM
- manually restart the engine VM on one of the hosts of the initial cluster
- move back the host that got into a temporary cluster to its initial cluster

Host CPU type is not compatible with Cluster Properties.

As first step I would add that you create new cluster which already
has 4.3 level and CPU Type you want so already can check if cluster
accepts nodes.

-Juhani