On Wed, Jun 10, 2009 at 12:30:25PM -0700, Les Mikesell wrote: > Roy Sigurd Karlsbakk wrote: > > > >> Roy Sigurd Karlsbakk wrote: > >>> Hi all > >>> I've been reading up a little about data deduplication, and have been > >>> in search for an OSS filesystem with dedup without much luck. While > >>> testing snapshots and so on in LVM, I started wondering if dedup > >>> would be better off in LVM than in the filesystem. Would it be > >>> possible/efficient to add dedup to the LVM layer, or perhaps a layer > >>> above LVM? This could make dedup work for all or most of filesystems. > >>> Make a hash table with 4k (or whatever) blocks, make virtual blocks > >>> pointing to the physical blocks and run a remapping/deduping job at > >>> night. If written to, copy-on-write could be used to increase speed. > >>> Is this nonsense, or might it be an idea? > >> > >> This is "supposed" to be coming in the next OpenSolaris/ZFS release > >> (per the roadmap with the just-released 2009.06 version). > > > > > > What about Linux/LVM? Or did I misunderstand you? > > I thought the question was about OSS... I wouldn't hold my breath > waiting for a Linux/LVM version - and for that matter I'll believe the > ZFS release when I see it, but at least it is being planned and could be > less than a year away. > Also, both btrfs and tux3 are planning on adding dedup support. Ray _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
