Re: [rdiff-backup-users] Safe to mirror backup dir with rsync?

[Jakob Unterwurzacher]

Am 2009-12-24 01:55, schrieb Engel Sanchez:
> Hi Alex. My understanding could be wrong, but this is the scenario that I'm 
> trying to avoid:
>
> 1) Machine 1 has the original data and backs it up locally to /backup
> 2) Machine 2 rsyncs /backup to local /backup every day
> 3) Machine 2 is rsyncing /backup, and right then machine 1 dies for good (fire, 
> flood, apocalypse)
>
> At that point in time, machine 1 is dead and /backup in machine 2 is not a 
> valid rdiff-backup directory, so you can't restore your data from it anymore.

You can still restore from machine 2.

The history will probably be broken and the latest backup will at the 
filesystem level not be a perfect snapshot in time (if you aren't using 
LVM snapshots you don't get that snapshot in time anyway).

But every file in the latest backup on it's own will be consistent 
(rsync does not modify files in-place).

So, you will have some files that are from the latest backup, some that 
are from the one before.

Acceptable IMO.


Jakob