On Tue, 02/09 19:48, John Snow wrote: > - Reading an entire drive to populate a bitmap with the understanding > that an incremental backup is soon to follow is inefficient if the drive > is more than just a little dirty: it may have been quicker to just > create a new full backup and bitmap.
Above all I think this is a good idea. Just as an alternative, can we add another sync mode for drive-backup? (QMP) drive-backup device=d0 target=target.qcow2 format=qcow2 sync=diff \ base=full-backup.qcow2 (the data of d0 will be compared against full-backup.qcow2 and only different clusters will be copied to target.qcow2) Fam