On Fri, Mar 9, 2012 at 5:12 PM, Basil Kurian <[email protected]> wrote: > I moved my KVM instances' HDD images to an ZFS filesystem running over fuse > on Fedora 16. The images in the folder are cloned from tmpl-centos57.img > file. Later they are modified on runtime. So there is only small delta > (change) between the files. In a normal filesystem like ext3 of ext4, the > images will consume full disk space. That is 38.5GB. But in my zfs volume > with deduplication enabled, It is occupying only 5.27GB space. Saved almost > 33GB space :) > > Note that 'ls' , 'du' like commands are not zfs aware , they may report > wrong sizes. >
Yup dedup takes place in a lower layer. We now store daily Linux LV snapshots from VMServers on DragonFly and Hammer since dedup helps us do the the same thing. Are you able to get Data of CRC collissions ? I am just curious :-) --Siju _______________________________________________ Indian Libre User Group Cochin Mailing List http://www.ilug-cochin.org/mailing-list/ http://mail.ilug-cochin.org/mailman/listinfo/mailinglist_ilug-cochin.org #[email protected]
