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

[Michal Skrivanek]

> On 5 Apr 2018, at 18:58, Yaniv Kaul <ykaul at redhat.com> wrote:
> 
> 
> 
> On Thu, Apr 5, 2018, 5:31 PM Luca 'remix_tj' Lorenzetto <lorenzetto.luca at gmail.com <mailto:lorenzetto.luca at gmail.com>> wrote:
> Hello,
> 
> we're planning an upgrade of an old 4.0 setup to 4.2, going through 4.1.
> 
> What we found out is that when upgrading from major to major, cluster
> and datacenter compatibility upgrade has to be done at the end of the
> upgrade.
> This means that we also require to restart our VMs for adapting the
> compatibility level.
> 
> Do we require to upgrade the compatibility level to 4.1 before
> starting the upgrade to 4.2?
> 
> No. 

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 

> Y. 
> 
> 
> We have more than 400 vms and only few of them can be restarted at our
> convenience.

> 
> 
> --
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> 
> "Internet è la più grande biblioteca del mondo.
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> John Allen Paulos, Matematico (1945-vivente)
> 
> Luca 'remix_tj' Lorenzetto, http://www.remixtj.net <http://www.remixtj.net/> , <lorenzetto.luca at gmail.com <mailto:lorenzetto.luca at gmail.com>>
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