On Mon, Feb 16, 2015 at 01:42:13PM +1100, Tony Breeds wrote:
Hello all,
I'm new to both openstack and libvirt so I may get some of this slightly
wrong[1].
Here is some context form the openstack world (which at least some of you are
aware of). There are at least 2 open bug against openstack (nova) in the area
of block/disk migration.
1) Live migration fails when the instance has a config-drive[2]
Here openstack(nova) fails because a drive that nova expects to be migrated
isn't migrated.
2) libvirt live_snapshot periodically explodes on libvirt 1.2.2 in the gate[3]
Here openstack(nova) fails because a drive that nova expects NOT to be
migrated is migrated.
On a related note, some weeks ago, I captured some context and analysis
(including some debugging done by Dan Berrange and Eric Blake on public
IRC channel mid-last year) for the above bug, since the actual bug has
too many comments:
https://kashyapc.fedorapeople.org/virt/openstack/nova-live-snapshot-bug-1...
The cause of it is almost narrowed down here by Dan in this comment
https://bugs.launchpad.net/nova/+bug/1334398/comments/27
--
/kashyap