This is the first time I read and refer to this mailing list, so if this
is an old topic for you... sorry :-)
I use rdiff-backup as my main backup tool in private (Laptop), public
(Server) and profession and love it.
One thing I always wondered, though, is whether there is a way to
"condense" old backup stages to "thin them out".
My server prepares daily (or nightly ;) ) backups. This is cool, because
if I do something stupid, I only loose one day (compared to weekly
On the other hand, for backups that were made weeks or even months ago,
I do not need daily resolution. A perfect backup timeline for me would
e.g. be the following:
0 to 1 month(s): daily
1 to 3 month(s): weekly
3 to 12 month(s): monthly
...and so on...
Obviously this is scriptable by restoring the snapshots of the relevant
(daily and later weekly, monthly,...) timestamps and rdiff-backup them
to a new location, but this seems rather tedious and inefficient. For
somebody with more insight into how rdiff-backup works, there might be
an efficient and easy-to-implement solution to this idea (essentially by
merging intermediate deltas).
Is there already a way which I missed or is this really not (yet)
On 09/12/2016 11:01 AM, bb wrote:
> This is the first time I read and refer to this mailing list, so if this
> is an old topic for you... sorry :-)
> I use rdiff-backup as my main backup tool in private (Laptop), public
> (Server) and profession and love it.
> One thing I always wondered, though, is whether there is a way to
> "condense" old backup stages to "thin them out".
In a word, no. It's something that has been requested before. The
underlying librsync library does not support merging successive
diffs, so the only way to do it would be to reconstruct two versions
of a file and create a new diff from those.
The way I handle it is by keeping entirely separate monthly backup
archives and periodically deleting everything more than a year old
from the daily archives. This has the added advantage that if one
of my archives becomes unrecoverably corrupted, I still haven't
Bob Nichols "NOSPAM" is really part of my email address.
Do NOT delete it.