Re: [rdiff-backup-users] Techniques for trimming the sizes of backups

[Matthew Miller]

On Thu, Feb 11, 2010 at 06:44:46AM +1100, Alex Samad wrote:
> > I'm experimenting with LessFS. It's another fuse-based filesystem, and in
> > addition to compressing blocks, it checksums each block and only stores
> > identical blocks once -- "de-duplication". This seems like a particular win
> > with rdiff-backup, because of the problem with handling of renamed files.
> thats nice.... what compression tec does it use

Read about it yourself here: http://www.lessfs.com/wordpress/?page_id=50

In short, it uses a 192-bit hash function (happens to be Tiger) to uniquely
identify each block, and then compresses each block with LZO or QUICKLZ.

-- 
Matthew Miller           address@hidden          <http://mattdm.org/>