Re: [Users] fw: Migrating ovirt-engine to new server

On 10/03/2012 04:17 PM, Neil wrote: > > On Wed, Oct 3, 2012 at 4:06 PM, Itamar Heim <iheim(a)redhat.com&gt; 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&gt; 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? > if you upgrade it the DC should be preserved. juan - i remember there was a specific issue around upgrade to check, but don't remember if was handled or not?