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Subject: Re: rolling backup
To: freebsd-questions@freebsd.org
References: <56A5F7FF.1050606@gmail.com> <56A6017E.4020801@freebsd.org>
From: Alexander Moisseev <moiseev@mezonplus.ru>
Message-ID: <af40c683-0474-8b00-0df1-ea58fd744c8c@mezonplus.ru>
Date: Mon, 25 Jan 2016 14:37:20 +0300
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On 25.01.16 14:05, Matthew Seaman wrote:
> Deleting 'all but the last N' is a good strategy with backups.  Suppose
> for whatever reason, backup fails for N nights in a row.  If you just
> deleted backup files that were over N days old, you'ld be left without
> any backups at all after a certain time.  However, keeping a certain
> number of files means that you still have some backups available, albeit
> older than would be ideal.
>
An exponential expiry strategy can solve that problem.

https://github.com/moisseev/rmexp/blob/master/rmexp/rmexp.pod
There is no support for backups stored locally as files yet, but it is not complicated to add.

--
Alexander