On 2013-01-12, ken <gebser at mousecar.com> wrote: > On 01/11/2013 07:08 PM Reindl Harald wrote: >> .... >> different versions of the backup >> daily, weekly, monthly > > Ah, yes, in that kind of scenario hard links would be useful. > >> unchanged files are replaced with hard-links >> the destination files are virtually on the same place > > And so then could changes to a file be recorded in the daily version as > a diff against the weekly? Not with rsync or rsnapshot. If you make a change in one line to a 48GB file, rsnapshot will remove the appropriate hard link (leaving the others alone) and create a new 48GB file at a new inode. (Because rsnapshot uses rsync, the data transfer for this change is still fast, but it's still 2x storage.) --keith -- kkeller at wombat.san-francisco.ca.us