First of all, Thanks for the hard work. With QMP, I can backup dirty-bitmap - like 'blockdev-backup' incremental sync mode. But this command should be executed at the host where the QEMU process is live.
I want to execute a backup at the other host so it does not affect running Guest. - `blockdev-backup` preempts the host's I/O resource. Is there any way to backup a dirty-bitmap that can be executed at the other server? Thanks.