On Sat, Aug 2, 2008 at 10:23 AM, Jose Ildefonso Camargo Tolosa
<ildefonso.camargo AT gmail DOT com> wrote:
> Hi!
>
> Thanks for your answer!
>
> On Sat, Aug 2, 2008 at 8:29 AM, John Drescher <drescherjm AT gmail DOT com> 
> wrote:
>>> What would happen if I configure them both with the same Media Type?,
>>> will Bacula correctly locate a tape if I switch it from one
>>> autochanger to the other?
>>>
>> No it will not do that.
>
> That's what  I thought.  I got the feeling that it could work because
> on the docs it says:
>
> (...) During a restore, assuming a DDS-4 Media Type is associated with
> the Job, Bacula can decide to use any Storage daemon that supports
> Media Type DDS-4 and on any drive that supports it.
>
> So, as I understand, if I have the same media type for more than one
> physical device, bacula could ask me to insert any "media type" tape
> on any "media type" drive.  So, I thought: if bacula keep track of the
> inventory on the exchangers, and have a way of updating it, it should
> *know* that one tape is on "autchangerX" on slot Y, and just use it
> (provided it has the same media type)........ This can be useful if
> one of the autochangers dies because I could migrate tapes from the
> other and everything should work just fine.  Unfortunately, I can't
> test this because the xchangers aren't mine, so I can't start doing
> experiments with them :( .  That's why I asked.
>
>>
>>> I mean, what would happen if I have one
>>> tape labeled and associated with one pool in autochanger0, and then I
>>> pick that tape and put it on autchanger1, will bacula correctly locate
>>> that tape and use it automatically?, or will it ask me to insert the
>>> tape back to autochanger0.
>>>
>> It will ask you to insert it in the other changer. I think you will
>> not have this problem if you use different pools for each changer and
>> make sure you do not put media from the wrong pool in a changer. Also
>> I do not think you will be able to use the scratch pool to add new
>> tapes to other pools when needed.
>
> That's how I configured it:
>
> + Different media type for each xchanger.
> + Different pools for each xchanger.
>
> And you are right, I don't have a scratch pool :( , I think I could
> configure a second instance of bacula-sd on a different port , but I'm
> just too lazy right now ;) .

eh...... I think I can have scratch pool, because I have them
configured with different media type and different pools, they won't
mix.

Ildefonso

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