Craig Barratt schrieb:
> "Ralf Gross" writes:
>
> > I schedule backups exclusively with cron with this option and
> > crontab
> > entries.
> >
> > $Conf{FullPeriod} = -1;
> >
> > 5 20 * * 5 /usr/share/backuppc/bin/BackupPC_serverMesg backup zorg
> > zorg
> > root 1 >/dev/null 2>&1
> >
> > 5 20 * * 1-4 /usr/share/backuppc/bin/BackupPC_serverMesg backup
> > zorg zorg
> > root 0 >/dev/null 2>&1
>
> Yes, this is the right way to do it. However, I recommend setting
> $Conf{IncrPeriod} to a number bigger than 0.95 because currently
> there will be a race condition between BackupPC doing it's normal
> scheduling of the incremental and the "manual" incremental via cron.
> Eg:
>
> $Conf{IncrPeriod} = 1.1;
Ok, I changed it to 1.1
> Alternatively, you don't need to do the incrementals with cron since
> BackupPC can schedule those every day after the full.
The full backups only take place at weekend, the incremental backups
from Monday to Friday. I like to know when each backup starts and
therefore I'll stay with cron. At the moment backuppc backups only 6
hosts.
> > Now I want to keep the last 4 weekly full backups + 3 monthly full
> > backups. So I changed the config.
> >
> > $Conf{FullKeepCnt} = [4, 0, 3];
> >
> > I'm not sure if this will work with $Conf{FullPeriod} set to -1
> > after
> > reading this part of the documentation.
> >
> > # Entry #n specifies how many fulls to keep at an interval of
> > # 2^n * $Conf{FullPeriod} (ie: 1, 2, 4, 8, 16, 32, ...).
>
> No, it won't work correctly with a negative $Conf{FullPeriod}.
> You should set $Conf{FullPeriod} to slightly more than 7, so
> that $Conf{FullKeepCnt} works correctly, but cron beats BackupPC
> for each full.
I changed it to 7.1. If I want to disable full backups for a host for
awhile, it is not sufficient to just comment out the crontab entry
anymore, I have to remember to set $Conf{FullPeriod} to -1 again?
Ralf
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