Re: [Bacula-users] restore with two autochanger using same MediaType

[Arno L. <al...@it...>]

Hi,

On 12/12/2006 10:38 PM, Thomas Glatthor wrote:
> Hi Arno,
> 
> Arno Lehmann wrote:
> 
>>we have two autochanger, booth changers using "SDLT-320" as MediaType.
>>version of bacula is 1.38.11
>>
>>Ok, problem understood :-)
>>
> 
> 
> there were some recent posts on the list, that indicates that this might cause problems.
> but someone (maybe kern himself) wrote to the manual:
> 
> "Thus you should probably use the same Media Type specification for all drives where the Media can be freely interchanged."

I'd be glad if you set your mail client to wrap lines at about 70 chars, 
and I'm sure others would like that, too.

More to the point: The term "can be freely interchanged" seems to be the 
problem. From Baculas point of view, this means that there's no penalty 
in using any device.

In your situation, there obviously is.

> i'm running bacula with one director and two storage-daemons at two different locations (~20km far from each other and booth
> with an Overland Neo 2000 SDLT attached).
> my goal was to store the tapes "cross-side" and restore from the offsite-tapes using the offsite-storage,
> this is why i'm using on booth location the same media-types and pools.

Ok, I understand that setup. I even see a solution for it:
Set up your storage devices with different media types.
When transfering tapes, change the media types of the tapes according to 
the location they're going to.

I could come up with a simple script to do that.

> i want to put the tapes in any storage, then "update slots" and running the restore, without thinking about in which storage
> the tape is.
> (i can handle the problem, but my teammates will kill me, when i return from 4-week-holiday)

They should be glad you returned :-)

> 
>>Well, it might be time to ply with 1.39.wherever-we-are-today for you 
>>and test this... I'm sure Kern would be interested in the results of 
>>your tests. As far as I know, there's a better chance for this to work 
>>as it should in 1.39.
> 
> 
> when its only requires an update of the director, maybe i can test it,
> but i can't update my complete bacula installation to a beta version .....

It does a require an update of DIR, SD, and catalog database schema at 
least - so this is not an option for you.

That said, I think it's quite stable, and I understand that Kern is 
going to relese 1.40 this year, so you might consider and upgrade soon, 
anyway.

Arno

> 
> Best Regards,
> Thomas
> 
> 
> 
> 
>>>btw. i need something like a column "location" in the Media-Table, can i
>>>simply add one, or will this cause troubles with future bacula-updates?
>>>currently possible locations of my tapes are:
>>>Overland1/Overland2/Safe1/Safe2 and Offsite, and i want to handle this
>>>inside of bacula.
> 
> 
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-- 
IT-Service Lehmann                    al...@it...
Arno Lehmann                  http://www.its-lehmann.de