> > I think that a true offline migration (without starting any > source/target vm) can be done with qemu-storage-daemon running nbd > server on target && qemu-img on source. > > This could be also used for online migration with unused/detached > disks. >
>>Yes, we could, but would require additional logic. So the question is >>if >>there are enough advantages to do it rather than via a full VM. >>Starting >>a VM of course requires more resources. I don't known if it's possible to use the ndb server in the targetvm, if the target disk is not attached ? (I really don't known) >>In case of 'restart' migration, we do want to start the VM anyways, >>so >>it's actually better, because we can catch config issues early :) Now >>that I think about it, can we also just start the target VM in >>prelaunch >>mode (instead of incoming migration mode), do the NBD migration, shut >>down the source VM, stop the NBD server and then resume the target? >>That >>would avoid the need to stop and start the target again. And >>therefore >>might be quite a bit less downtime. Yes, indeed ! I'll work on this for next version. _______________________________________________ pve-devel mailing list pve-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
