[CentOS] evaluating backup systems: rsync
gebser at mousecar.com
Fri Jan 11 21:47:26 UTC 2013
On 01/11/2013 02:33 PM m.roth at 5-cent.us wrote:
> ken wrote:
>> 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?
>> 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? 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?
>> I remember you speaking well of Backuppc previously and so am open to
>> using that in future. At the moment though, I'm looking for the
>> simplest possible solution for those three current concerns.
> We use rsync here. Actually, we've got a home-rolled system. We created
> timestamped backups, which also removes them after a configuration file
> item of how many days or weeks. Note that we *heavily* use rsync's parm to
> use hard links, which saves a lot of space.
Cool. Thanks for mentioning time-stamps. I've been assuming that rsync
would maintain the source files' original permissions and timestamps.
(Heck, even tar from decades past would do that.) I hope that wasn't an
unwarranted assumption. It's good to hear too that I can configure how
long to keep files on destination which have been deleted from the
source (if that's what you meant).
Mark, maybe you could explain what a "parm" is and how using hard links
More information about the CentOS