Hi Giridhar, The size reported by ls can include things like holes in the file. What space usage does the zfs(1M) command report for the filesystem?
Adam On Dec 16, 2009, at 10:33 PM, Giridhar K R wrote: > Hi, > > Reposting as I have not gotten any response. > > Here is the issue. I created a zpool with 64k recordsize and enabled dedupe > on it. > -->zpool create -O recordsize=64k TestPool device1 > -->zfs set dedup=on TestPool > > I copied files onto this pool over nfs from a windows client. > > Here is the output of zpool list > --> zpool list > NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT > TestPool 696G 19.1G 677G 2% 1.13x ONLINE - > > I ran "ls -l /TestPool" and saw the total size reported as 51,193,782,290 > bytes. > The alloc size reported by zpool along with the DEDUP of 1.13x does not addup > to 51,193,782,290 bytes. > > According to the DEDUP (Dedupe ratio) the amount of data copied is 21.58G > (19.1G * 1.13) > > Here is the output from zdb -DD > > --> zdb -DD TestPool > DDT-sha256-zap-duplicate: 33536 entries, size 272 on disk, 140 in core > DDT-sha256-zap-unique: 278241 entries, size 274 on disk, 142 in core > > DDT histogram (aggregated over all DDTs): > > bucket allocated referenced > ______ ______________________________ ______________________________ > refcnt blocks LSIZE PSIZE DSIZE blocks LSIZE PSIZE DSIZE > ------ ------ ----- ----- ----- ------ ----- ----- ----- > 1 272K 17.0G 17.0G 17.0G 272K 17.0G 17.0G 17.0G > 2 32.7K 2.05G 2.05G 2.05G 65.6K 4.10G 4.10G 4.10G > 4 15 960K 960K 960K 71 4.44M 4.44M 4.44M > 8 4 256K 256K 256K 53 3.31M 3.31M 3.31M > 16 1 64K 64K 64K 16 1M 1M 1M > 512 1 64K 64K 64K 854 53.4M 53.4M 53.4M > 1K 1 64K 64K 64K 1.08K 69.1M 69.1M 69.1M > 4K 1 64K 64K 64K 5.33K 341M 341M 341M > Total 304K 19.0G 19.0G 19.0G 345K 21.5G 21.5G 21.5G > > dedup = 1.13, compress = 1.00, copies = 1.00, dedup * compress / copies = 1.13 > > > Am I missing something? > > Your inputs are much appritiated. > > Thanks, > Giri > -- > This message posted from opensolaris.org > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- Adam Leventhal, Fishworks http://blogs.sun.com/ahl _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
