Graham Keeling wrote:
> On Thu, Jul 16, 2009 at 12:09:32PM +0200, Marcin Radczuk wrote:
>   
>> I'm trying use bacula more than a month. I have more than 2000 hosts to 
>> backup. We want to do everyday backup. One Full backup per month and 
>> Incrementals every other day. Now I have 10 bacula-sd and one bacula-dir 
>> and I was add only 300 hosts to schedule. I automated hosts add to 
>> bacula-dir, and I have one config file per host. Every host have his own 
>> Job, Pool and Fileset in his config. Problem is that bacula can do one 
>> backup per bacula-sd. I use Maximum Concurrent Jobs = 900 but I have one 
>> Pool per host and bacula can't run another job on bacula-sd if other job 
>> is running. Is that mean that I must do one pool per sd? We use Linux 
>> machine (Debian Eatch/Lenny) on SD, FD and DIR. How can I boost bacula 
>> performance?
>>     
>
> I had similar problems. I had to define 'Maximum Concurrent Jobs' in many
> places to get it to work.
>
> Currently, I have it like this:
> bacula-dir.conf:
>       Director { Maximum Concurrent Jobs = 20; }
>       Storage { Maximum Concurrent Jobs = 20; }
>       Client { Maximum Concurrent Jobs = 20; }
>       Job { Maximum Concurrent Jobs = 1; }
> bacula-fd.conf:
>       FileDaemon { Maximum Concurrent Jobs = 20; }
> bacula-sd.conf:
>       Storage { Maximum Concurrent Jobs = 20; }
>   
Not only that - but it may actually not be what you want. When you allow 
an SD to have multiple concurrent jobs, the data from these jobs gets 
interleaved on the volume. As a result, restores are slower, and you may 
also end up having a 20 incremental backup jobs each spread out over the 
same several volumes. That makes recycling difficult - even more so when 
some of the backup jobs are full and some are incrementals. The bacula 
manual has some additional considerations at 
http://www.bacula.org/en/rel-manual/Basic_Volume_Management.html#SECTION002620000000000000000

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