Re: duplicate files and recent changes

[Joe Cooper <joe@swelltech.com>]

Hans Reiser wrote:
 > Debian User wrote:
 >
 >> On Fri, Jun 07, 2002 at 10:53:57AM +0200, Heinz-Josef Claes wrote:
 >>
 >>
 >>>
 >>> But I've written a well tested tool for backing up directories on
 >>>  another disk which uses md5 sums to recognize same files (even
 >>> in one backup) and hard links them. By this way, it combines the
 >>> advantages of full and incremental backup. It also uses
 >>> compression and has a lot of other options and optimisations. It
 >>> runs best with reiserfs, because reiserfs has no preconfigured
 >>> number of inodes and is fast with hard linking. So, if you need
 >>> to backup, try http://sourceforge.net/projects/storebackup
 >>>
 >>
 > Would anyone care to check this tool out, and post a review?
 >
 > Hans

Not to discount the work Heinz-Josef has done, but rdiff-backup may be a 
better way to achieve a similar goal.  It does not have the benefit of 
being "best with reiserfs" but it works great on ReiserFS partitions (as 
well as ext2/3 and probably anything else).

http://www.stanford.edu/~bescoto/rdiff-backup/

Binary diffs are fun.  I'd be surprised if an MD5/hardlink system could 
match it for compression of increments over time, or beat the 
flexibility of being able to keep potentially weeks or months worth of 
daily diffs in a very small space.  I may be wrong, of course.  But 
rdiff-backup is working great for me.
-- 
Joe Cooper <joe@swelltech.com>
Web caching appliances and support.
http://www.swelltech.com