[ovirt-users] cannot change cluster compatibility version from 3.6 to 4.0

[Tomas Jelinek]

----- Original Message -----
> From: "Jiří Sléžka" <jiri.slezka at slu.cz>
> To: users at ovirt.org
> Sent: Tuesday, June 28, 2016 5:37:33 PM
> Subject: Re: [ovirt-users] cannot change cluster compatibility version from 3.6 to 4.0
> 
> Dne 28.6.2016 v 17:19 Alexander Wels napsal(a):
> > On Tuesday, June 28, 2016 05:11:14 PM Jiří Sléžka wrote:
> >> I forgot attach the screenshot...
> >>
> >> Jiri
> >>
> >
> > The label that has the dotted line under it should have a tooltip
> > explaining
> > the issue. But some of the most likely issues are:
> 
> you are righ, there is a tooltip explaining tha I have to shutdown all
> vms before changing compatibility version (I suppose this is valid only
> for 3->4 upgrade because minor upgrades were possible without downtime)

there is a bug for that: https://bugzilla.redhat.com/show_bug.cgi?id=1348907
When this will get in, your VMs will only be marked by a delta sign telling you that some of the changes
require the VM to be restarted to take effect. So you will be able to update the cluster level without the 
VMs being down, but in order to be able to use the new features of the new cluster for a particular VM, you will have to 
restart it.

> 
> > 1. DC is at 3.6 and you can't have 4.0 clusters in 3.6 DC.
> 
> but when I try to change DC version from 3.6 to 4.0 I got
> 
> "Error while executing action: Cannot update Data Center compatibility
> version to a value that is greater than its Cluster's version. The
> following clusters should be upgraded CIT-oVirt."
> 
> > 2. Active host on 3.6 in the cluster. You can put the hosts in maintenance
> > and
> > upgrade the cluster, you will obviously also have to upgrade the hosts
> > after
> > that before you can activate them again.
> 
> ok, thanks for help. I have to schedule maintenance window.
> 
> Cheers, Jiri
> 
> 
> >
> >> Dne 28.6.2016 v 17:06 Jiří Sléžka napsal(a):
> >>> Hi all,
> >>>
> >>> I have just upgraded engine from 3.6.6 to 4.0 (all worked fine except
> >>> custom certificate problem which is described and solved here
> >>> https://bugzilla.redhat.com/show_bug.cgi?id=1336838).
> >>>
> >>> Then I upgraded all hosts in cluster and I would like to change cluster
> >>> compatibility level but it fails in a way there is a red border around
> >>> "Compatibility Version" dropdown box but no explanation why. There are
> >>> no entries in logs...
> >>>
> >>> What are prerequisities to change cluster compatibility level to 4.0? Do
> >>> I missing something?
> >>>
> >>> Engine (standalone) and hosts are CentOS 7.2
> >>>
> >>> btw. dashboard looks really nice!
> >>>
> >>> Cheers, Jiri
> >>>
> >>>
> >>> _______________________________________________
> >>> Users mailing list
> >>> Users at ovirt.org
> >>> http://lists.ovirt.org/mailman/listinfo/users
> >
> 
> 
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