Re: [ovirt-users] compatibility relationship between datacenter, ovirt and cluster

On 04/10/2014 10:50 PM, Tamer Lima wrote: > Hi, > > > yesterday my ovirt was 3.3 > my datacenter and cluster (compatibility version) was aligned with ovirt > 3.3 > > > today my ovirt is now 3.4. > and my datacenter and cluster (compatibility version) remains 3.3 (with > the option enabled to change for 3.4) > > browsing the ovirt admin page I see 2 occurrences of ovirt version: > datacenter tab = 3.3 > cluster tab =3.3 > > > > I would like to understand what means all these versions, the same > version for a lot of important things, and how my ovirt works/behaves > using different versions. > > all my doubts together : > What means datacenter in version 3.3(or lower version) when ovirt is 3.4 > ? > what means cluster in version 3.3 when ovirt is 3.4? > what means change the "compatibility version" for datacenter? > what means change the "compatibility version" for cluster? > Gianluca replied with links for specific features. I'll reply on the general concept: - a host can be upgraded to a specific 3.x version. it can be in any 3.y cluster which is <= 3.x once the host is upgraded, 3.x host-level features can be used - a cluster can be upgraded to 3.x once all active hosts in it are at least with 3.x. once the cluster is upgraded, 3.x cluster-level features can be used - a data cetner can be upgaeded to 3.x once all clusters in it are at least with 3.x once the DC is upgraded, 3.x DC-level features can be used i don't think we have it clearly documented per feture if it is host level, cluster level or DC level. when in doubt, ask...