On Tue, Nov 11, 2008 at 10:11:40PM +0000, Daniel P. Berrange wrote: > On Thu, Nov 06, 2008 at 03:10:29PM +0100, Chris Lalancette wrote: > > All, > > Attached is a patch to implement Qemu/KVM live migration in libvirt. > > Now > > that upstream Qemu has settled on an interface that is friendly to libvirt > > (i.e. > > one that doesn't block the monitor on -incoming), we can implement it here. > > Note that the bulk of this patch was written by Rich Jones quite a while > > ago. > > My hand in it has mostly been to forward port it to current libvirt CVS, > > tweak > > it for the new Qemu style, and test it out with a recent KVM (kvm-78, in > > particular). > > Note that there is a FIXME in the code. When testing this out with > > kvm-78, > > I found that if I let the source side kill the source VM immediately after > > the > > "migrate" monitor command completed, the migration to the destination would > > never complete. This seems to be a bug in Qemu; the migrate monitor command > > shouldn't return until the migrate is really, truly complete. I'm posting > > this > > now so I can get reviews, and start to address review comments while I try > > to > > figure out what's going on with Qemu. With my temporary hack of the sleep() > > call in there, though, I was able to successfully live migrate an F-9 guest > > between two machines. > > > > Signed-off-by: Chris Lalancette <[EMAIL PROTECTED]> > > Now that the QEMU bug is fixed, I'm inclined to say we should commit this > migration support - minus the sleep(5) of course. It is well overdue to > have migration in the QEMU driver, and oVirt guys have sanity checked its > implementation in their developemnt, so shouldn't be any surprises.
Agreed, +1 Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ [EMAIL PROTECTED] | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/ -- Libvir-list mailing list Libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
