Bacula-users

Re: [Bacula-users] question about multiple file pools

2009-11-17 06:20:05
Subject: Re: [Bacula-users] question about multiple file pools
From: Arno Lehmann <al AT its-lehmann DOT de>
To: bacula-users AT lists.sourceforge DOT net
Date: Tue, 17 Nov 2009 12:14:46 +0100
Hello,

17.11.2009 02:48, Jerome Alet wrote:
> Hi again,
> 
> On Tue, Nov 17, 2009 at 02:09:03AM +0100, Arno Lehmann wrote:
>> 17.11.2009 00:49, Jerome Alet wrote:
>>> On Mon, Nov 16, 2009 at 02:35:12PM +1100, Jerome Alet wrote:
...
>>>> But during restore, what happens is that only volumes configured as
>>>> being part of the pool defined for the "RestoreFiles" job are
>>>> automatically mounted, and bacula waits for us to manually mount the
>>>> other volumes, which don't seem to be possible since they are file
>>>> volumes (i.e. always 'mounted')
>>> OK, I've fixed this particular problem by creating multiple Media Types.
>> Great... I was about to suggest that :-)
>>
>>> This was written in the documentation, but not about this particular
>>> subject, about multiple concurrent accesses instead.
>> At least you found it - but where did you initially look? (Just so we
>> can, perhaps, improve the manual)
> 
> I think I've searched this a lot in resources definitions, especially
> pools, but the answer is (somewhat hidden) there :
> 
> http://www.bacula.org/en/rel-manual/Basic_Volume_Management.html#ConcurrentDiskJobs
> 
> Maybe this could be clarified but I don't really know where nor how,
> since I'm a bacula newbie (our existing setup was put in place before I
> landed here)

Hmm... well, then, perhaps simply mentioning this in the description 
of the Pool Resource would help.

>>>> As you can see above, I want to have very small volumes, but LOTS of
>>>> them. When labelling them automatically, bacula only uses 4 digits, what
>>>> will happen when it will reach 9999 ?
...
>>> or does it start over at "full-0001" and overwrite an
>>> existing volume, or does it fail miserably because "full-0001" should
>>> not be overwritten (if it's still full, as it will probably be) ?
>> But - why do you want so many volumes that you expect to have 10,000
>> in a few months? Sounds a bit hard to manage...
> 
> I knew the question would come !
> 
> :-)
> 
> I'm currently doing some testing and I like to play with things to see
> if the solution is robust.

Excellent approach!

> When in production my volumes will certainely
> be bigger than 32 MB as they are now.

Ok, now I don't worry any more :-)

Arno

-- 
Arno Lehmann
IT-Service Lehmann
Sandstr. 6, 49080 Osnabrück
www.its-lehmann.de

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