Kern Sibbald wrote:
> On Friday 02 March 2007 00:59, Simon Ekstrand wrote:
>> Steen skrev:

[...]

>>> You need to set a Maximum Volume Size in order for Bacula to "rotate" or
>>> recycle volumes properly, like:

[...]

>> I thought that 'Maximum Volume Bytes' and 'Volume Use Duration' did the
>> exact same thing except that one limited based on size and the other on
>> a time interval, that's the way i interpret the documentation here:
>> http://www.bacula.org/rel-manual/Basic_Volume_Management.html#SECTION002611
>> 000000000000000
>>
>> So the way i read it setting 'Maximum Volume Bytes' wouldn't help my
>> situation. I'd be happy to be wrong though and I'll be testing it first
>> thing in the morning.
> 
> I think the comments made by Steen are correct, and in principle (logically) 
> what you say is correct too, but in practice, Bacula handles Maximum Volume 
> Bytes rather gracefully -- it notifies all concurrent jobs of the volume 
> change, whereas Volume Use Duration does not.  
> 
> Anyway, the best is to test it ...

I've run multiple tests with 'Maximum Volume Bytes' set to 5 gb today
with very good results. With multiple clients running, clients started
after the first volume rotation etc. All jobs switched volume(s) without
any problems and all jobs completed successfully. Restores of the jobs
in question also worked without any problems. This also helped cut down
the restore times by alot due to the smaller volume sizes which is a big
win.

It might be a good idea to document the difference between how bacula
deals with Maximum Volume Bytes and Volume Use Duration in the volume
management section of the documentation so others can avoid this issue
in the future.

Thanks all for the quick help.

-- 
Simon Ekstrand

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