On Fri, Jan 28, 2011 at 01:38:11PM -0800, Igor P wrote: > I created a zfs pool with dedup with the following settings: > zpool create data c8t1d0 > zfs create data/shared > zfs set dedup=on data/shared > > The thing I was wondering about was it seems like ZFS only dedup at > the file level and not the block. When I make multiple copies of a > file to the store I see an increase in the deup ratio, but when I copy > similar files the ratio stays at 1.00x.
Dedup is done at the block level, not file level. "Similar files" does not mean that they actually share common blocks. You'll have to look more closely to determine if they do. Nico -- _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
