On Mon, Aug 24, 2009 at 11:39:28AM +0300, Roman wrote:

> I have installed and configured BackupPC successfully, thank you for
> this great software.
> One small thing I may not fully understand:
> I have made a full backup, but which contained only a few files (just
> for testing), after this I setup all needed directories for the
> backup, and all incremental backup's afterwards look like a full
> backup. The question is: does backuppc incremental backups compare the
> files only to the last full backup and does not compare also to the
> last incremental backup? Seems like it does it like this.

Look at the configuration setting $Conf{IncrLevels}

It defaults to 1, so all incrementals will be based on the last full. If
you configured, for example, 1 weekly full and want 6 incrementals each
based on the previous, set
$Conf{IncrLevels} = [1,2,3,4,5,6];

It is a tradeoff: The 6th incremental might take very long since a lot
of directories need to be checked which does a lot of I/O on the server.
It might be faster to just transfer some more differences.

Have a look at the explanation here:
http://backuppc.sourceforge.net/faq/BackupPC.html#item__conf_incrlevels_

HTH,

Tino.

-- 
"What we nourish flourishes." - "Was wir nähren erblüht."

www.lichtkreis-chemnitz.de
www.craniosacralzentrum.de

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