Re: [ovirt-users] Is compatibility level change required for upgrading from 4.0 to 4.2?

On Fri, Apr 6, 2018 at 12:28 PM, Luca 'remix_tj' Lorenzetto < lorenzetto.luca(a)gmail.com&gt; wrote: > On Fri, Apr 6, 2018 at 11:05 AM, Michal Skrivanek > <michal.skrivanek(a)redhat.com&gt; wrote: > > > > you just need to keep the supported versions in mind. Version 4.2 > supports > > Cluster levels 3.6, 4.0, 4.1(same as version 4.1) - so any of them is ok > > > > Perfect, thank you for the confirmation. > > To change the compatibility level of DC, i've seen that all clusters > require has to be upgraded. > Does the upgrade of the DC requires the restart of all the VMs to have > the cluster completely upgraded or restarting the VMs is an activity > indipendent from this? > You won't have to restart the running VMs. You'll see that VMs that were running at the time of the cluster upgrade are set with custom-compatibility-version that matches the previous compatibilty-level of the cluster. So obviously, VM-specific features that were added in 4.2 won't be applicable to those VMs until they are restarted (and then their custom-compatibility version is cleared so their effective compability-level would change to 4.2). But even when some VMs are set with custom-compatibility-version, the cluster is upgraded and so it should be possible to upgrade the DC.

> > Luca > > > > -- > "E' assurdo impiegare gli uomini di intelligenza eccellente per fare > calcoli che potrebbero essere affidati a chiunque se si usassero delle > macchine" > Gottfried Wilhelm von Leibnitz, Filosofo e Matematico (1646-1716) > > "Internet è la più grande biblioteca del mondo. > Ma il problema è che i libri sono tutti sparsi sul pavimento" > John Allen Paulos, Matematico (1945-vivente) > > Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , < > lorenzetto.luca(a)gmail.com&gt; > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users >