Hello Kern,
Is there any problem to set Maximum Concurrent Jobs = 1 in Devices
definition?
Setting this directive to a higher value and, in the case of using tape
libraries, combined with data spooling for reducing data interleave, should
make our backups goes faster. But if someone really don´t need that more
than one job writes to one tape and want to have no data interleave, is
this configuration a problem?
Best regards,
Ana
On Tue, Nov 25, 2014 at 10:42 AM, Kern Sibbald <k...@sibbald.com> wrote:
> Hello,
>
> This is a mini-status report just to let you know that someone on one of
> these lists said that the new white papers advise using:
>
> Maximum Concurrent Jobs = 1
>
> In the bacula-sd.conf Device resource. I have reviewed the three white
> papers listed on the bacula.org site and I find no such mention. Almost
> all the examples use MaximumConcurrentJobs=5 and several set it to 10.
>
> If someone can point me to the place (if it exists) where 1 in
> mentioned, I will be happy to fix it.
>
> In addition, another person pointed out that manual_prune.pl does not
> seem to be available. That was an oversight on my part, and that file is
> now included as a download item under White Papers. The essential
> elements of what manual_prune.pl does has been integrated directly into
> the Bacula source code, and in the next few days I will update the
> documentation to refer to the new way of doing "manual" pruning (i.e.
> pruning once a day rather than at the end of every Job).
>
> For those of you who are not aware of the pruning issues, you need to
> know that when one has many jobs (say 1000 per day) and many Volumes,
> the normal Job pruning that Bacula does at the end of each Job can
> become a performance problem (not likely with less than 50 jobs per
> day). To resolve it, it is best to turn off automatic pruning but then
> to schedule an Admin job once a day that will do the equivalent. The
> program (now integrated into the code) manual_prune.pl was written by
> Bacula Systems for the Enterprise customers, but is published for your
> use with the community version.
>
> Finally, I have made a few very minor changes to the Best Practices for
> Disk Based Backup document.
>
> Best regards,
> Kern
>
>
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