µicroMEGAS <microme...@mail333.com> wrote on 10/04/2013 09:29:22 AM:
> 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, 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.
> 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';
>
> But I am facing the problem, that I get up to 3-4 FullBackups for each
> host and then the other host backups fail.
Check the configuration for the Web GUI for that host. What does it show
for FullKeepCnt?
> I cannot explain why this
> happens.
Me either. The only thing I can think of is that *you* think it's set
correctly, but BackupPC does *NOT* and it's doing something else. I'd use
the GUI to check the configuration because that's going to show you
exactly what BackupPC is using for the configuration. If it thinks
something other than what you pasted above, then you have a problem with
your configuration files.
Also, show us the log file for a particular host (the entire thing) for a
complete month. It will help all of us to see what BackupPC is thinking.
(Using October won't be enough.) For example, notice what a section of
mine looks like:
2013-09-21 18:00:01 full backup started for directory D (baseline backup
#69)
2013-09-22 01:56:54 full backup started for directory C (baseline backup
#69)
2013-09-22 02:22:38 full backup 70 complete, 433302 files, 614928683948
bytes, 118 xferErrs (0 bad files, 0 bad shares, 118 other)
2013-09-22 02:22:38 removing full backup 49
Notice that it does a new full backup, *then* deletes aa now-obsolete full
backup. (In my case, it just did full backup 70 and removed backup 49
because I keep more than one full backup, spread out over months of time.)
We should see something similar from your log files as well.
> 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 :(
I assume you're a non-native English speaker (it would be "read", not
"red"), so I'm trying to understand that sentence, but it's not a complete
sentence so it's hard. But here goes: I think you have that backwards.
Incremental backups are based on full backups. You can't have
incrementals without fulls. But full backups stand on their own: they
don't need incrementals.
But if there are incrementals that need to be kept, then the full they are
based on will need to be kept, too. That means that with 6 incrementals,
you're going to have to keep *2* fulls around.
> I also tried $Conf{IncrKeepCnt} = '6'; then I stopped
> BackupPC, manually removed the backups within my pool harddisk, then I
> did a manually nightly_job cleanup with
> "/usr/share/backuppc/bin/BackupPC_nightly 0 255" and restarted BackupPC.
Don't forget that you have to remove the backups from the "backups" file,
too.
> What am I doing wrong? I would really appreciate any assistance for my
> desired backup scheme. What are the correct values for my purpose? Thank
> you.
As described above, with incrementals, at some point you're going to have
two fulls (because when you do a full, the incrementals will be based on a
*previous* full which will be kept around).
However, it should be possible to have *only* two fulls, and with pooling
you might be just fine with that. You're saying you have three or more,
so something else is wrong.
Like I said: check what the GUI says the configuration should be.
FullKeepCnt should be 1, FullKeepCntMin should be 1, FullAgeMax should be
much bigger (there's no disadvantage in having it be something like 90 or
180) but is not part of this issue. The values you have for the variables
above are fine (except change FullAgeMax). I'm not sure, though, that
BackupPC is actually *using* them.
Tim Massey
Out of the Box Solutions, Inc.
Creative IT Solutions Made Simple!
http://www.OutOfTheBoxSolutions.com
tmas...@obscorp.com
22108 Harper Ave.
St. Clair Shores, MI 48080
Office: (800)750-4OBS (4627)
Cell: (586)945-8796
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