[ovirt-users] Downgrade ovirt-engine 3.6 to 3.5

[Barak Korren]

On 24 May 2016 at 10:29, Gianluca Cecchi <gianluca.cecchi at gmail.com> wrote:
> On Tue, May 24, 2016 at 9:21 AM, Yedidyah Bar David <didi at redhat.com> wrote:
>>
>> On Tue, May 24, 2016 at 9:47 AM, Nicolas Ecarnot <nicolas at ecarnot.net>
>> wrote:
>> > Le 24/05/2016 08:36, Sandvik Agustin a écrit :
>> >>
>> >> Hi,
>> >>
>> >> thanks for the quick reply, i have export domain already running and
>> >> attached to ovirt 3.6.
>> >>
>> >> co'z i have 3 hypervisor, 2 are running centos 6.7
>> >
>> >
>> > No one could resist asking you why you wouldn't upgrade those two hosts
>> > to
>> > centos 7 ...
>>
>> I think I can - because in 3.6 we do not support migrating VMs across
>> clusters
>> from el6 to el7, while in 3.5 we did. Not sure exactly why, but this was
>> the
>> reason for doing this migration in 3.5 for hosted-engine upgrade [1].
>>
>>
>
> But in just released 3.6.6 it should be here again.
> See in release notes http://www.ovirt.org/release/3.6.6/
>
> BZ 1241149 [RFE] Provide way to preform in-cluster upgrade of hosts from
> el6->el7.
> https://bugzilla.redhat.com/show_bug.cgi?id=1241149
>
> or not?
>

Not sure about that RFE, but out-of-cluster migration of live VMs from
EL6 to EL7 is very much possible (just hiding behind an "advanced"
button in the UI), and is the migration path we took for many systems.



-- 
Barak Korren
bkorren at redhat.com
RHEV-CI Team