On Tue, Apr 28, 2015 at 11:24:37 +0200, Michal Privoznik wrote:
> On 28.04.2015 11:06, Pavel Boldin wrote:
> > Well, actually that seems to be quite a different bug in there.
> >
> > I will start a new thread.
> >
> > In short: migration seems to be broken by commit
> > 1a92c719101e5bfa6fe2b78006ad04c7f075ea28. This is because introduced job
> > _MODIFY waits while MIGRATION_OUT is finished to change `mirrorState'
> > variable. This deadlocks the libvirt.
>
> Yep, this is known bug. I've told Peter already like two weeks ago. He
> promised to fix it. It would be nice if we can get the fix into the release.

There are already patches for the issue:

http://www.redhat.com/archives/libvir-list/2015-April/msg00724.html