Re: [Users] fw: Migrating ovirt-engine to new server
On Wed, Oct 3, 2012 at 4:06 PM, Itamar Heim <iheim(a)redhat.com> wrote:
On 10/03/2012 04:04 PM, Neil wrote:
>
> Thanks for coming back to me.
>
> On Wed, Oct 3, 2012 at 4:00 PM, Itamar Heim <iheim(a)redhat.com> wrote:
>
>> do you need to keep the VMs, or just move the LUNs to create a new one?
>> if you just want to create a new one, you just need to clear the LUNs (DD
>> over them) so engine will let you use them (or remove them from first
>> engine
>> which will format them for same end goal.
>
>
> I need to keep the VM's unfortunately.
> Logically speaking all I need to do is detach the main data domain
> from one ovirt-engine and re-attach it to the new ovirt-engine.
sadly, not that easy yet (though just discussed today the need to push this
feature).
easiest would be to export them to an nfs export domain, re-purpose the
LUNs, and import to the new system.
if not feasible, need to hack a bit probably.
Oh crumbs! I thought that was wishful thinking though :)
Exporting the VM's to NFS will take too long due to the total size
being 4TB and the VM's are a mail, proxy and pdc servers so getting
that much downtime won't be possible. Is attempting the upgrade
path(http://wiki.ovirt.org/wiki/OVirt_3.0_to_3.1_upgrade) again my
only option then?
Even if I manage to get the "upgrade" working will I still need to
export/import the VM's via NFS or will the datacentre move across once
it can be detached?
Thanks!
Neil