Arnd Bergmann <arnd@xxxxxxxx> wrote on 09/09/2010 04:10:27 PM: > > > Can you live migrate a new guest from new-qemu/new-kernel > > > to old-qemu/old-kernel, new-qemu/old-kernel and old-qemu/new-kernel? > > > If not, do we need to support all those cases? > > > > I have not tried this, though I added some minimal code in > > virtio_net_load and virtio_net_save. I don't know what needs > > to be done exactly at this time. I forgot to put this in the > > "Next steps" list of things to do. > > I was mostly trying to find out if you think it should work > or if there are specific reasons why it would not. > E.g. when migrating to a machine that has an old qemu, the guest > gets reduced to a single queue, but it's not clear to me how > it can learn about this, or if it can get hidden by the outbound > qemu. I agree, I am also not sure how the old guest will handle this. Sorry about my ignorance on migration :( Regards, - KK -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
