[Users] Wondering about updating ovirt from 3.0 to 3.1

[Ofer Schreiber]

TOP POSTING, as I got this question number of times:

oVirt 3.0 was the first release of the oVirt project. 
It was based on Fedora16, and a special JBoss package (ovirt-engine-jbossas) which we created as a temporary solution until JBoss will get into Fedora.

3.1 is Fedora 17 based, and supports the official JBoss.

Due to those huge changes (packaging wise mainly), our upgrade path is non-trivial.
Actually, even if we didn't have the (huge) packaging changes, 3.0 to 3.1 upgrade would require a big amount of downtime, due to the need to upgrade you base OS (Fedora 16 to 17).

As we mentioned in the release notes, we have two options to do the upgrade:
1. RECOMMENDED - Export all templates ans vms and import them into a new setup
   - Downtime depends on the total size of VMs + Templates
2. NOT RECOMMENDED - Follow http://wiki.ovirt.org/wiki/OVirt_3.0_to_3.1_upgrade
   - Downtime depends on the F16 -> 17 upgrade + few manual steps


I understand both flows are not perfect, but we had to do those changes.
As a result, future upgrades should be much faster.

Thanks,
Ofer


----- Original Message -----
> On 08/09/2012 02:35 PM, Gavin Spurgeon wrote:
> 
> Eli/Ofer/Juan - what was the result of fixing the upgrade script to
> work
> from 3.0 to 3.1?
> 
> > Hash: SHA1
> >
> >
> >
> > On 08/09/2012 11:55 AM, Jacob Wyatt wrote:
> >> See the migration instructions at the bottom of the relese notes.
> >> Basically you shut down all of your VMs, export them to your
> >> export
> >> domain.  Now all you have to do is preserve that export domain
> >> storage.  Everything else should be blown away and rebuilt as a
> >> completely new install.  Then you import that storage domain you
> >> saved and restore the VM's.  It worked just fine for me.
> >
> > But this requires that my entire Production Environment being
> > off-line, to do a point update of the oVirt from 3.0 to 3.1.....
> >
> > oVirt Nodes can run without a Manager being present and all Guest
> > will
> > stay Up and running. What if, Taking the whole environment off
> > line,
> > is not an option...
> >
> > - From a DR point of view, oVirt needs a Backup solution to backup
> > the
> > Manager, and more importantly a Restore Option that would mean you
> > can
> > bring an oVirt Manager Back online without the whole lot being
> > off-line.
> >
> >> ________________________________________ From:
> >> users-bounces at ovirt.org [users-bounces at ovirt.org] on behalf of
> >> Gavin Spurgeon [gspurgeon at dageek.co.uk] Sent: Wednesday, August
> >> 08,
> >> 2012 11:35 AM To: users at ovirt.org Cc: Dale Macartney Subject: Re:
> >> [Users] Wondering about updating ovirt from 3.0 to 3.1
> >>
> >>
> >> Hi All,
> >>
> >> I know I am not the 1st to ask, and I know I will not be the
> >> last....
> >>
> >> I have oVirt3.0 on F16, The Release Notes for 3.1 give a guide on
> >> how to upgrade oVirt to 3.1 via a Fedora Upgrade...
> >>
> >> Can I do the same thing via a Clean Install of F17 (I do not like
> >> Upgrades of OS's) ?
> >>
> >> Or is there a documented DR procedure assuming the host was backed
> >> up and a new Host/OS had to be used to get oVirt back on-line ?
> >>
> >> Basically, What do I need to backup to then bring down the
> >> F16/oVirt3.0 Box and replace it with a F17/oVirt3.1 Box ?
> >>
> >> Is this Documented yet ?
> >>
> >>
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> >>
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> >> Users at ovirt.org http://lists.ovirt.org/mailman/listinfo/users
> >>
> >>
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> >>
> >>
> >
> > - --
> >
> > Gavin Spurgeon.
> > AKA Da Geek
> >
> > -
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