On Fri, Oct 4, 2013 at 8:29 AM, µicroMEGAS <micromegas AT mail333 DOT com> 
wrote:
> Hello all,
>
> I have red many times the manual and of course I tried many settings,
> still without luck. I have 30 hosts which have about 1400Megabytes of
> data in summary. As I am using a 2TB harddisk for my backuppc pool,

Is that 1400MB before or after compression?  If before, I wouldn't
expect a big problem.

>I
> would like (am able) to have just one full backup for all of them. If
> it's possible to have 2 FullBackups due to deduplication, that would be
> nice. But one full Backup is enough, because I dont have more capacity.

Usually you end up with 2 fulls at least part of the time, but because
of pooling you only need extra space for the changed files.

> So I would like to have:
>
> - full backup, once a week
> - incremental backups, every day until next full backup is done
>
> I have configured:
>
> $Conf{FullPeriod} = '6.97';
> $Conf{IncrPeriod} = '0.97';
> $Conf{FullKeepCnt} = [1];
> $Conf{FullKeepCntMin} = '1';
> $Conf{FullAgeMax} = '6';
> $Conf{IncrKeepCnt} = '6';
> $Conf{IncrKeepCntMin} = '3';
> $Conf{IncrAgeMax} = '14';

Those look reasonable.

> But I am facing the problem, that I get up to 3-4 FullBackups for each
> host and then the other host backups fail. I cannot explain why this
> happens. I have red, that if an incremental backup is needed for the
> last FullBackup or something like that, but to be hondest I didnt
> understand that :(

Are all of your backup runs completing every day?

Each incremental run only stores the files that have changed since the
previous full, although when you browse or restore they are merged
with the backing full.  This means that (a) you will have at least 8
copies of files that change every day (logfiles, databases, mail
archives, etc.), and (b) the full runs that back the incremental are
always kept.  Until you've done the 6th incremental after your current
full, you need to keep the previous full and if you have missed any
runs, your older incrementals might go with an even older full.

-- 
   Les Mikesell
     lesmikesell AT gmail DOT com

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