[ovirt-users] Upgrade path from running 3.6 (centos 7) to 4.1

[Yaniv Kaul]

On Thu, Mar 2, 2017 at 10:16 AM Peter Hudec <phudec at cnc.sk> wrote:

> A Few weeks ago I did upgrade from 3.5 to 4.1
> The release-by-release (3.5 -> 3.6 -> 4.0 -> 4.1)upgrade we found out as
> very time consuming, since we were running CentOS 6 on all HOST and
> Engine too. We decided to install new 4.1 and migrate the VM.
>

Agree, it takes time - but there is the InCluster migration policy which
allows mixing (in a single direction - EL6 -> EL7) hosts, especially to
prevent downtime.


>
> The only  disadvantage of this upgrade is the VM downtime during the
> migration. You need to export and import them again.
>

What about detach and attach the storage domain? Wasn't that a viable
option? Or did you prefer export-import one (or several) VMs at a time?
Y.


>
>         Peter
>
>
> On 02/03/2017 08:09, Lionel Caignec wrote:
> > Ok thank you,
> >
> > Ok another question, i need to ugprade engine to 4.0 first and then to
> 4.1, do i need to do the same for the hypervisor or can i directly go to
> 4.1?
> >
> > ----- Mail original -----
> > De: "Yedidyah Bar David" <didi at redhat.com>
> > À: "Lionel Caignec" <caignec at cines.fr>
> > Cc: "users" <users at ovirt.org>
> > Envoyé: Jeudi 2 Mars 2017 07:59:56
> > Objet: Re: [ovirt-users] Upgrade path from running 3.6 (centos 7) to 4.1
> >
> > On Thu, Mar 2, 2017 at 7:07 AM, Lionel Caignec <caignec at cines.fr> wrote:
> >>  Hi,
> >>  i'm running an ovirt cluster in 3.6 (centos 7) no hosted engine.
> >>  Is it possible to upgrade directly from 3.6 to 4.1? Or this is not
> recommended.
> >
> > It's not possible. You need to go through 4.0.
> >
> > Best,
> >
> >>
> >>
> >>  Thanks,
> >>  Lionel
> >> _______________________________________________
> >> Users mailing list
> >> Users at ovirt.org
> >> http://lists.ovirt.org/mailman/listinfo/users
> >
> >
> >
>
>
> --
> *Peter Hudec*
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>
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