Re: [rdiff-backup-users] Merging multiple sources

[Chris Wilson]

Hi Matt,

> I'm interested in whether or not rdiff-backup will be able to take a
> backup of one source, then take a backup of a second source and "merge"
> the two so that I then have a single copy of all the latest data. If
> anyone knows anything about this I would appreciate your insight.

If you're not already backing up both sources with rdiff-backup, then I'm 
afraid the answer is definitely no. rdiff-backup is just rsync with 
history, and you wouldn't have any history.

If you are already using rdiff-backup on both sources, to different 
destinations, then the answer is "not yet". Technically you could restore 
both to a point in time where they were identical, and then apply changes 
from the history in both repositories. However, this code has not been 
written, as far as I know.

Merging two sources "properly" is very tricky, but you can approximate it 
by using rsync between the two (once in each direction) but set to only 
overwrite older files with newer files, and to make backups.

Hope this helps.

Cheers, Chris.
--
_ ___ __     _
 / __/ / ,__(_)_  | Chris Wilson <0000 at qwirx.com> - Cambs UK |
/ (_/ ,\/ _/ /_ \ | Security/C/C++/Java/Perl/SQL/HTML Developer |
\ _/_/_/_//_/___/ | We are GNU-free your mind-and your software |