Hi,
On Wed, 2005-11-16 at 08:43 +0100, Tarjei Huse wrote:
> Hi,
>
> I use backuppc to backup a number of machines, including one server
> containing about 70gb of data.
>
> About two weeks ago my backups suddenly slowed down. Instead of
> incrementals taking a very lookng time. I tried to fix this by
> increasing the timeouts. This has helped. The problem seems to be on the
> backuppc side of things. Usually an incremental took about 1 - 200
> minutes. Now suddenly they are taking 2000+ minutes.
>
> The problems started with errors saying backuppc ended with signal=ALRM
> in the logs. I've also found what seems to be an uncomplete full backup
> at the start of this. The backup is listed in the different tables, but
> lacs the logs.
>
> What I'm wondering about is ;
>
> a) How can I clean out the seemingly phony backup?
remove the directory with the number of the failed backup and remove
it's entry from the "backups" file.
> b) What could be other reasons that is causing this issue?
>
> I have no problem with bandwidth (2mb). The disks do not report any
> errors. However when running _dump manually, it seems that each file
> takes a very loong time even when it is in the pool. There are about 550
> 000 files.
Let me guess: ext3 filesystem? If yes, you've just been hit by the "ext3
doesn't scale for large number of files" problem. Use reiser or xfs.
> Versions:
> Rsync: 2.6.3 (on the client)
> File::RsyncD (on server) : 0.52
> BackupPC 2.1.1
If you use ext3, I'm rather curious what kernel you're running, because
ext3 is supposed to have become better at this in recent times. Although
I do not know if the btree patches are included in the vanilla kernels.
> Kind regards,
> Tarjei
Hth,
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