Hey.
Just wondered about the following:
When I have a btrfs which acts as a master and from which I make copies
of snapshots on it via send/receive (with using -p at send) to other
btrfs which acts as copies like this:
master +--> copy1
+--> copy2
\--> copy3
and if now e.g. the device of master breaks, can I move *with
incremential send -p / receive backups from one of the copies?
Which of the following two would work (or both?):
A) Redesignating a copy to be a new master, e.g.:
old-copy1/new-master +--> new-disk/new-copy1
+--> copy2
\--> copy3
Obviously at least
send/receiving to new-copy1 shoud work,
but would that work as well
to copy2/copy3 (with -p), since they're
based on (and probably using
UUIDs) from the snapshot on the old
broken master?
B) Let a new device be the master and move on from that (kinda creating
a "send/receive cycle":
1st:
copy1 +--> new-disk/new-master
from then on (when new snapshots should be incrementally sent):
new-master +--> copy1
+--> copy2
\--> copy3
Again, not sure whether send/receiving to copy2/3 would work, since
they're based on snapshots/parents from the old broken master.
And I'm even more unsure, whether this back&forth send/receiving,
from copy1->new-master->copy1 would work.
Any expert having some definite idea? :-)
Thanks,
Chris.
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