On 21/07/10, Rory Campbell-Lange (rory AT campbell-lange DOT net) wrote:
> On 21/07/10, Craig Miskell (craig.miskell AT opus.co DOT nz) wrote:
> > Rory Campbell-Lange wrote:
> > >On 19/07/10, Rory Campbell-Lange (rory AT campbell-lange DOT net) wrote:
> > > > I ran a full backup of a volume last week on Bacula v2.4.4 and I
> > > > have now upgraded to 5.0.2. I'm getting half the throughput last
> > > > week as I am now.
> > > > 
> > > > Last week's test volume was a 2.1TB xfs volume and it read/wrote
> > > > on average at 70MB/s. I am now backing up a 4.4TB ext3 volume and
> > > > bconsole's status client shows backup running at less than 30MB/s.
> > > > Hardware compression has been enabled in both cases.

> Spool Size = 250GB                 # maximum spool size for this job
> Maximum Spool Size = 250GB         # only one job at a time
> Maximum Job Spool Size = 250000000 # 250GB in bytes
> Spool Directory = /tapespool       # XFS filesystem preferred?

I am now using a spool to see what is happening for the locally attached
Coraid storage. The locally attached storage runs at a (contended) write
of 77MB/s and read of over 100MB/s as confirmed by the tool ddt. 

So I now have a Full backup running off local attached storage (Coraid,
ext3) to fully local storage (HW RAID with BBU, xfs). However bconsole's
"status client" still shows activity at around 20-30MB/s
(Bytes/sec=24,363,733) with bacula-fd reading off the target at around
20-30MB/s to make a local 250GB file. Incidentally,  bacula-sd
periodically writes to tape at ~ 100MB/s.

Google searches suggest that there might be a problem with the speed at
which local spool files are made. 

2006:
http://www.mail-archive.com/bacula-users AT lists.sourceforge DOT 
net/msg09171.html
2010:
http://www.adsm.org/lists/html/Bacula-users/2010-06/msg00272.html

Is there a problem with bacula-fd?

Rory
-- 
Rory Campbell-Lange
rory AT campbell-lange DOT net

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