I was talking about using the hooks before installing the ssds, but if that can
be done reliably also before the upgrade it's also a solution that will help
scratch our current itches sooner.

That's about it. The hook in 3.6 contains the patch I submitted. It does not work without it at all.
Although you can use rpm from 3.5 in 3.6.

^ well, the machines being slaves I think there's no problem having to stop
them to migrate them, we have already experience with both fabric and jenkins
so I guess it should not be hard to automate with those tools ;)

Yes there is no problem with that. But I am not aware about "stop all slaves on the host" feature in
oVirt so that would be either manually clicking or we need to fabricate it. Not a big deal too.

Anton Marchukov
Senior Software Engineer - RHEV CI - Red Hat