On Thu, Nov 12, 2015 at 10:44 AM, Gianluca Cecchi <gianluca.cec...@gmail.com
> wrote:

> On Thu, Nov 12, 2015 at 10:40 AM, Paul Groeneweg | Pazion <p...@pazion.nl>
> wrote:
>
>> OK, I understand, I would need to upgrade my Hosts to go to 3.6.
>>
>> I think I read somewhere I can't mix EL6 and EL7 hosts in the same
>> cluster, is this true?
>>
>>
> You can have a mix of EL6 and EL7 hosts with 3.5 cluster compatibility in
> place.
> But you have to notice that you can do live migrations in direction EL6
> --> EL7 but not the reverse.
> SO you have to care about this for your migration strategy.
> Probably bettere to update at least two hosts to EL7 before beginning to
> place critical VMs on them.
> HIH,
> Gianluca
>

Opsss, perhaps I'm wro and you have to create a different cluster in the
same datacenter and progressively migrate VMs from hosts in first cluster
to hosts in second cluster.
At least so it was in 3.5.1.... did it change?

See
http://lists.ovirt.org/pipermail/users/2015-May/032818.html
and bugzilla
https://bugzilla.redhat.com/show_bug.cgi?id=1150191
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