On Mon, Dec 13, 2010 at 11:00:44AM -0700, Alex Williamson wrote: > On Mon, 2010-12-13 at 19:50 +0200, Michael S. Tsirkin wrote: > > On Mon, Dec 13, 2010 at 10:43:22AM -0700, Alex Williamson wrote: > > > So, unfortunately, I stand by my original patch. > > > > What about the one that put -1 in saved index for a hotplugged device? > > There are still examples that don't work even without hotplug (example 2 > and example 3 after the reboot). That hack limits the damage, but still > leaves a latent bug for reboot and doesn't address the non-hotplug > scenarios. So, I don't think it's worthwhile to pursue, and we > shouldn't pretend we can use it to avoid bumping the version_id. > Thanks, > > Alex
I guess when we bump it we tell users: migration is completely borken to the old version, don't even try it. Is there a way for libvirt to discover such incompatibilities and avoid the migration? -- MST
