Michael Ablassmeier: vmsync

I’ve been asked a few times if it would be possible to use virtnbdbackup as some kind of “replication” utility, to keep cold standby virtual machines on other libvirt hosts. Usually i would tell to use underlying filesystem features (such as zfs send/recv, with incremental snapshots) to keep cold, standby copies on other hosts. As for qcow based virtual machines, using the dirty bitmaps is not only a valid feature to create backups, but to (incrementally) replicate virtual machines, too.…

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