On Jun 28, 2011, at 4:07 PM, C Anthony Risinger wrote: > 2011/6/28 João Eduardo Luís <jecl...@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) from 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 same >> original subvolume. > > generic deduplication? >
I'm not sure if deduplication is what I'm looking for. What I actually want to achieve is to reconstruct a file's data from two diverging files. I.e., two snapshots are taken from the same subvolume and, in each snapshot, a given file A is written to. Assuming different blocks were written on, and no expected semantics are violated, what I aim to achieve is the correct reconciliation of file A in one of the snapshots. Maybe this could be achieved by using deduplication. I'll look into those patches. Even if they are not completely useful, they very well contain some neat concept that may be used to solve this little puzzle of mine. :-) Thanks. --- João Eduardo Luís gpg key: 477C26E5 from pool.keyserver.eu
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