On Fri, Aug 28, 2009 at 11:47:41AM -0400, Jeffrey J. Kosowsky wrote:
> In general, using FullKeepCnt and IncrKeepCnt (and associated
> variables) works well to prune older backups.
>
> But sometimes there is a *specific* older backup that you want to hang
> onto because it has some crucial data (or is a 'better' snapshot). It
> would be great if you could tell BackupPC to keep an arbitrary list of
> numbered backups for each different host. (If any of the listed backups
> are incrementals, then BackupPC would of course be smart enough to
> save the relevant precedent incrementals and full backups).
>
> For example I could imagine, a perl hash of arrays of the following
> form:
>
> $Conf{PreserveBackups} = {
> "hostA" => [ '23', '354', '798' ],
> "hostB" => [ '3', '25', '37', '101' ],
> "hostC" => [ '9', '11', '33', '434' ],
> };
>
> Does this make sense?
I would rather simply have a $Conf{PreserveBackups} = [ 23, 354, 798 ];
setting. Settings are already evaluated per-host, so this would allow you
to override it in the host-specific configuration, like many other settings.
Furthermore, this is already possible, albeit in a more manual way; eg. do
cp -rl /var/lib/backuppc/pc/hostA/23 /var/lib/backuppc/pc/hostA/kept-23
(i believe backuppc will not touch any directories there that aren't
completely numeric and/or listed in the backups files, if not, you should
copy it to someplace outside of the pc/ directory).
The kept-23 directory will survive the removal of the 23 directory, and as a
consequence, the files won't be removed from the pool either.
--
Pieter
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