On Thu, Jan 24, 2019 at 6:55 PM Dr. David Alan Gilbert <dgilb...@redhat.com> wrote: > > * Stefano Garzarella (sgarz...@redhat.com) wrote: > > This patch adds the support of DISCARD and WRITE ZEROES commands, > > that have been introduced in the virtio-blk protocol to have > > better performance when using SSD backend. > > > > Signed-off-by: Stefano Garzarella <sgarz...@redhat.com> > > Hi, > Do you need to make those features machine-type dependent > so that a VM started on a nice new qemu with this feature doesn't > get confused when live migrated back to an older version? >
Hi Dave, oh, thanks! I think the answer is absolutely yes :) I'll fix it! Another doubt that I have now is that I need to flush the MultiReqBuffer before submitting DISCARD or WRITE ZEROES commands. Thanks, Stefano
