I would add this: 45 GB and 185,000 files is, in my opinion, far from big.
I have a number of servers backing up hosts that are 5 to 10 times as big,
and bigger. and that is with 1 GHz anemic processors and 512 MB RAM.
I think the answers that you're getting are correct: you're probably short
of some sort of resource. But this is far from a normal situation. Tiny
little backup servers are able to do much much bigger hosts. There's
something fundamentally weird about your setup.
Timothy J. Massey
Sent from my iPhone
On Jan 11, 2012, at 11:00 AM, "Les Mikesell" <lesmikesell AT gmail DOT com>
wrote:
> On Wed, Jan 11, 2012 at 12:10 AM, Peter Thomassen
> <mail AT peter-thomassen DOT de> wrote:
> > Hi,
> >
> > when backuping a host with a large number of files (~180,000 files,
> > about 45 GB), I recently started receiving messages like this:
> >
> > 2012-01-10 05:08:02 [host]: Can't fork
at /usr/share/backuppc/lib/BackupPC/Lib.pm line 1353.
> >
> > What could be the reason for that? I suspect a memory shortage, but I
am
> > not sure. Would it make sense?
> >
> > Unfortunately, I currently don't have a chance to monitor memory usage.
>
> Running out of several kinds of system resources or hitting per-user
> or process limits can cause this error. Memory used to hold the
> directory listing for rsync comparision is the mostly likely thing to
> trigger it, and adding RAM is the best fix. But, you might be able to
> work around it by reducing concurrent backup runs or adding swap.
>
> --
> Les Mikesell
> lesmikesell AT gmail DOT com
>
>
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