lessfs & btier » admin

Lessfs-1.0.1 released.

admin — Sun, 24 Jan 2010 09:33:48 +0000

This fixes a rare race condition that can cause lessfs to segfault and crash.

Lessfs-0.7.4 is now available for download.

admin — Mon, 12 Oct 2009 21:10:49 +0000

This version of lessfs introduces a new hash named Blue Midnight Whish.

This is a very fast hash that increases lessfs performance significantly. The implementation makes it easy to use any of the hashes from the NIST hash competition. BMW was choosen for lessfs because of the speed.

The length of the hash is now configurable between 20 and 32 bytes for BMW and 20 to 24 for the tiger hash.

Lessfs-0.7.2 Released.

admin — Tue, 06 Oct 2009 18:24:26 +0000

Lessfs-0.7.2 fixes a typo in lib_tc.c that could potentially lead to data corruption.
Please upgrade a.s.a.p. when you use lessfs-0.7.1 with the tokyocabinet data store. Older releases are not effected.

Lessfs-0.7.2 also contains a minor performance enhancement.

Lessfs 0.6.0 features

admin — Sun, 06 Sep 2009 14:29:38 +0000

As of version 0.6.0 lessfs supports filesystem encryption.

Feedback

admin — Thu, 27 Aug 2009 20:22:19 +0000

Your feedback about lessfs data dedup is highly appreciated.

Lessfs performance

admin — Wed, 26 Aug 2009 21:03:42 +0000

On a HP DL380 G5 lessfs 0.5.0 is now capable of de-duplicating data with speeds up to 350MB/sec*. This is 1.2TB per hour! In the near future lessfs will also be capable of using a raw device for storing the data. This will further increase the speed.

* Tested with MAX_TREADS=4 and blocksize=131072

Open Source data deduplication for less.

admin — Wed, 25 Mar 2009 14:53:55 +0000

lessfs – A high performance inline data deduplicating filesystem for Linux.

lessfs is released under the GNU GPLv3 license and can be downloaded from:

http://sourceforge.net/project/showfiles.php?group_id=257120

Lessfs mailing list : lessfs@googlegroups.com

EPRD – An eventually persistent kernel based ram disk or disk cache.

http://sourceforge.net/projects/eprd/files/

TIER – A tiered storage blockdevice

http://sourceforge.net/projects/tier/files/

Tier mailing list : tier-users@lists.sourceforge.net

Lessfs offers a flexible solution to utilize data deduplication on affordable commodity hardware. Lessfs is a high-performance inline data deduplication filesystem written for Linux and is currently licensed under the GNU General Public License version 3. It also supports LZO, QuickLZ and BZip compression (among a couple others), and data encryption as well as replication.