Hello,

In the context I was using the word "mount", you can replace it
with "open".

Concerning your other points, I think the best response is simply
to try testing and find out what works and what does not work. How
Autochangers (whether physical or virtual) work is fairly well
documented.

Best regardss,
Kern

On 05/11/2013 11:01 PM, Dimitri Maziuk wrote:
> On 05/11/2013 12:32 AM, Kern Sibbald wrote:
>> Yes, Media Type is very important.  It must
>> be in the Storage resources on the Director
>> side, and notice that as I mentioned before, on
>> the SD side, Autochanger really just groups a
>> number of Devices.  The Media Type must be
>> in each Device, because each one can be different
>> so it is not in the Autochanger resource.
>>
>> There is no restriction for multiple devices to have
>> the same Media Type, but if they are disk devices
>> and don't have the same Archive Device, Bacula
>> won't be able to "mount" them.  So, use the same
>> Media Type only in Devices that have the same Archive
>> Device.
> OK, please define "mount" in the context of your autochanger example:
> here's the config writing to actual multiple disks (mounted at OS level)
> rather then /tmp:
>
> Autochanger {
>     Name = FileChgr1
>     Device = FileChgr1-Dev1, FileChgr1-Dev2
>     Changer Command = ""
>     Changer Device = /dev/null
> }
>
> Device {
>     Name = FileChgr1-Dev1
>     Media Type = File1
>     Archive Device = /mnt/bacula01
>     LabelMedia = yes          # lets Bacula label unlabeled media
>     Random Access = Yes
>     AutomaticMount = yes      # when device opened, read it
>     RemovableMedia = no
>     AlwaysOpen = no
>     Maximum Concurrent Jobs = 5
> }
>
> Device {
>     Name = FileChgr1-Dev2
>     Media Type = File1
>     Archive Device = /mnt/bacula02
>     LabelMedia = yes          # lets Bacula label unlabeled media
>     Random Access = Yes
>     AutomaticMount = yes      # when device opened, read it
>     RemovableMedia = no
>     AlwaysOpen = no
>     Maximum Concurrent Jobs = 5
> }
>
> So bacula won't be able to "mount" FileChgr* devices because they have
> the same Media Type and different Archive Device. Does it matter -- i.e.
> does bacula "mount" the Autochanger device and not the FileChgr*
> devices, so that's moot? Or does it "mount" the FileChger* device
> somewhere under the hood, so I do have to give them different Media
> Types? In which case what do I specify as Media Type in the bacula-dir.conf?
>
> This is where I get lost: the way I read it they have to have Media Type
> File1 and File2, but then I can't put both in the director config.
>
> Thanks again
>
> (As an aside, I can write a "BDR_sized_file" to any suitable device, so
> having to name media types "BDR_sized_file_on_disk_1",
> "BDR_sized_file_on_disk_2", etc. is a bit counter-intuitive.)


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