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[rdiff-backup-users] Merge old backup stages

From: bb
Subject: [rdiff-backup-users] Merge old backup stages
Date: Mon, 12 Sep 2016 18:01:28 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0


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".
For example:
My server prepares daily (or nightly ;) ) backups. This is cool, because
if I do something stupid, I only loose one day (compared to weekly
backups, etc).
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)

Thanks and Cheers,

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