[CentOS] evaluating backup systems: rsync

Fri Jan 11 18:59:28 UTC 2013
Leon Fauster <leonfauster at googlemail.com>

Am 11.01.2013 um 19:53 schrieb ken:
> On 01/11/2013 12:36 PM Les Mikesell wrote:
>> On Fri, Jan 11, 2013 at 11:29 AM, ken<gebser at mousecar.com>  wrote:
>>> Considering using rsync on a couple systems for backup, I was wondering
>>> if it's possible, and if so how difficult is it, to delete files which
>>> have been backed up (in order to save space on the backup media).
>>> Anyone with experience doing this?
>> Can you be more specific about the problem you are trying to solve?
>> Backuppc normally expires/deletes backups at a specified rate by
>> itself and it only stores one copy of any identical file regardless of
>> how many times it is backed up.   You aren't going to save any space
>> by deleting old copies of something that is still on any target you
>> are backing up.
> Les, thanks for replying.  Yeah, I guess I need to clarify.
> I've got a system which is due for an upgrade and, at the same time, 
> would like to clean up (delete) files and, in some instances, entire 
> directories.  Insurance against sudden disk failure is one other concern.
> If I delete files and entire directories on that (source) machine, will 
> rsync then subsequently automatically delete them on the destination 
> (backup) system?  

How looks your "rsync" command that you execute?

If you specify --delete : yes

e.g. rsync --delete /sourceroot destination:/srv/backup/machinex/

> Or would I need also to run an rsync command to
> delete the same on the destination system?  
> And, if yes, what rsync command would do that?