set dedup=on
root@home:~# beadm list BE Active Mountpoint Space Policy Created -- ------ ---------- ----- ------ ------- osol-dev-128a NR / 25.46G static 2009-12-04 12:38 root@home:~# zfs list pool_d NAME USED AVAIL REFER MOUNTPOINT pool_d 712K 63.4M 644K /pool_d root@home:~# zpool status pool_d pool: pool_d state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM pool_d ONLINE 0 0 0 /pool1/zfstest/1 ONLINE 0 0 0 errors: No known data errors root@home:~# zpool list pool_d NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT pool_d 95.5M 140K 95.4M 0% 18.00x ONLINE - root@home:~#
No comment: DEDUP=18.00x! Сегодня буду пробовать на живых данных (относительно большая библиотека изображений, около 150 Gb).