Re: Snapshot reconciliation

[C Anthony Risinger <anthony@xtfx.me>]

2011/6/28 Jo=C3=A3o Eduardo Lu=C3=ADs <jecluis@gmail.com>:
> Hello.
>
> Can anyone think of a simple way to copy a set of pages from a given =
file (which may or may not be scattered throughout multiple extents) fr=
om a snapshot to correct pages within another file on another snapshot?
>
> This might sound silly, but the whole purpose is to create some sort =
of reconciliation method between divergent snapshots taken from the sam=
e original subvolume.

generic deduplication?

Josef posted some patches back in Jan:

http://www.spinics.net/lists/linux-btrfs/msg07818.html
http://www.spinics.net/lists/linux-btrfs/msg07819.html
(etc)

=2E.. if that's what your looking for.  i don't know whats all needed t=
o
make it work at this point, ie. if you only need the patch to
btrfs-progs or some combination.  there could be more recent patches
but i don't recall anyone talking about any.

C Anthony
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