On 2013-01-22 15:34, Adrian Reyer wrote:
> On Tue, Jan 22, 2013 at 01:37:43PM -0600, dweimer wrote:
>> If you have checked disk I/O, CPU, memory, network, on both the
>> client
>> and the server, all seem great, both from a statistics look, showing
>> all
>
> What about many small files, possibly very many in single
> directories? I
> have seen these with huge impact on backup performance, especially on
> busy directories.
>
> Regards,
> Adrian
There really hasn't been a huge change in the data, below are from the
client status, the full I canceled this morning has the majority of
files done, but not the bulk of the data. The biggest chuck of which is
the around 30 iTunes movie files, which is where I should see the best
performance in the backup, at the point I canceled this it was in the
process of processing one of those 4+G movie files.
Full 67,353 284.8 G OK 15-Jan-13 03:30
Incr 0 0 OK 16-Jan-13 00:05
Incr 18 5.145 M OK 17-Jan-13 00:05
Incr 23 9.016 M OK 18-Jan-13 00:05
Incr 8 11.50 M OK 19-Jan-13 00:05
Incr 31 16.09 M OK 21-Jan-13 00:08
Incr 31 16.09 M OK 21-Jan-13 00:08
Full 53,174 125.0 G Cancel 22-Jan-13 08:46
However you see there are multiple incremental backups ran on the 21st.
I did have some failures Monday morning, I had rebooted the server on
Sunday and forgot to remount my backup volume. It was in the server
during reboot, but is encrypted so it doesn't mount automatically.
Those jobs had marked all of my disk volumes with an error state, I
hadn't noticed, so when I remounted the volume for its Monday backups
most jobs failed, due to lack of usable online volumes but a couple
completed, and got kicked off a second time after I marked the volumes
back online. Its possible all of this had been caused by snapshots that
had been stuck around since the failure of the backup job on the
bacula-dir and bacula-sd server, the database volume was included in
this, that few day old snap shot may have been slowing down writes to
the database.
I have cleared that and its running a dbcheck on the database now, I
will kick off new backups when that finishes and see how things go.
Hopefully this was the cause, however I may have to do some more
performance searching because the snapshot shouldn't have caused the
performance to degrade that much.
--
Thanks,
Dean E. Weimer
http://www.dweimer.net/
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