On Thu, 3 Dec 2009, Darren J Moffat wrote:
The answer to this is likely deduplication which ZFS now has.
The reason dedup should help here is that after the 'cat' f15 will be made up
of blocks that match the blocks of f1 f2 f3 f4 f5.
Copy-on-write isn't what helps you here it is dedup.
Isn't this only true if the file sizes are such that the concatenated
blocks are perfectly aligned on the same zfs block boundaries they
used before? This seems unlikely to me.
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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