On Fri, August 14, 2009 11:13 am, Dan Langille wrote:
> Changing the subject, given the change in subject.  :)
>
> On Thu, August 13, 2009 3:14 pm, John Drescher wrote:
>> On Thu, Aug 13, 2009 at 3:09 PM, John Drescher<drescherjm AT gmail DOT com>
>> wrote:
>>> On Thu, Aug 13, 2009 at 2:45 PM, Dan Langille<dan AT langille DOT org> 
>>> wrote:
>>>> On Thu, August 13, 2009 2:27 pm, Dan Langille wrote:
>>>>>
>>>>> On Thu, August 13, 2009 1:19 pm, Dan Langille wrote:
>>>>>> I am setting up a new autochanger / tape drive.  I'm trying to run
>>>>>> btape.
>>>>>> The basic test works, but I see this message when I start btape:
>>>>>>
>>>>>>  Autochanger "loaded? drive 0", result: nothing loaded.
>>>>>>
>>>>>> mtx-changer [and mtx] both disagree with this:
>>>>>>
>>>>>> $ sudo /etc/bacula/mtx-changer /dev/sg4 loaded 0 /dev/nst0 0
>>>>>> AAM240L4
>>>>>
>>>>> That is a problem.  You don't want the label.  You want the slt it
>>>>> came
>>>>> from.  See
>>>>> http://www.bacula.org/en/dev-manual/Autochanger_Resource.html#SECTION0017130000000000000000
>>>>>
>>>>>     loaded -- returns number of the slot that is loaded, base 1,
>>>>>               in the drive or 0 if the drive is empty.
>>>>>
>>>>> Current problem: I can't see how to get this information from the
>>>>> device.
>>>>> I'll keep working on it:
>>>>>
>>>>> $ sudo /usr/sbin/mtx -f /dev/sg4 inquiry
>>>>> Password:
>>>>> Product Type: Medium Changer
>>>>> Vendor ID: 'QUANTUM '
>>>>> Product ID: 'PX500           '
>>>>> Revision: '0033'
>>>>> Attached Changer: No
>>>>> [dlangille@backup01 bacula]$
>>>>
>>>> I think we have a problem:
>>>>
>>>> [dlangille@backup01 bacula]$ sudo /usr/sbin/mtx -f /dev/sg4 load 3
>>>> [dlangille@backup01 bacula]$ sudo /usr/sbin/mtx -f /dev/sg4 status
>>>>  Storage Changer /dev/sg4:1 Drives, 38 Slots ( 36 Import/Export )
>>>> Data Transfer Element 0:Full (Unknown Storage Element
>>>> Loaded):VolumeTag
>>>> =
>>>> AAM240L4
>>>>      Storage Element 1:Empty
>>>>      Storage Element 2:Empty
>>>>      Storage Element 3 IMPORT/EXPORT:Empty
>>>>      Storage Element 4 IMPORT/EXPORT:Full :VolumeTag=AAM241L4
>>>>
>>>> Should that 'Unknown Storage Element Loaded' be a 3 to indicate the
>>>> slot
>>>> it came from?
>>>>
>>>
>>> Here is what my mtx output looks like
>>>
>>> dev6 ~ # mtx -f /dev/autochanger1 status
>>>  Storage Changer /dev/autochanger1:2 Drives, 24 Slots ( 1 Import/Export
>>> )
>>> Data Transfer Element 0:Full (Storage Element 17 Loaded):VolumeTag =
>>> A00036
>>> Data Transfer Element 1:Empty
>>>      Storage Element 1:Full :VolumeTag=A00030
>>>      Storage Element 2:Empty:VolumeTag=
>>>      Storage Element 3:Full :VolumeTag=A00058
>>>      Storage Element 4:Full :VolumeTag=A00053
>>>      Storage Element 5:Full :VolumeTag=A00023
>>>      Storage Element 6:Full :VolumeTag=A00006
>>>      Storage Element 7:Full :VolumeTag=A00007
>>>      Storage Element 8:Full :VolumeTag=A00052
>>>      Storage Element 9:Full :VolumeTag=A00028
>>>      Storage Element 10:Full :VolumeTag=A00020
>>>      Storage Element 11:Full :VolumeTag=A00054
>>>      Storage Element 12:Full :VolumeTag=A00039
>>>      Storage Element 13:Full :VolumeTag=A00048
>>>      Storage Element 14:Full :VolumeTag=A00012
>>>      Storage Element 15:Full :VolumeTag=A00068
>>>      Storage Element 16:Full :VolumeTag=A00069
>>>      Storage Element 17:Empty:VolumeTag=
>>>      Storage Element 18:Full :VolumeTag=A00065
>>>      Storage Element 19:Full :VolumeTag=A00066
>>>      Storage Element 20:Full :VolumeTag=A00067
>>>      Storage Element 21:Full :VolumeTag=A00062
>>>      Storage Element 22:Full :VolumeTag=A00063
>>>      Storage Element 23:Full :VolumeTag=A00064
>>>      Storage Element 24 IMPORT/EXPORT:Full :VolumeTag=A00029
>>>
>>> What version of mtx are you using?
>>>
>>> dev6 ~ # equery l mtx
>>> [ Searching for package 'mtx' in all categories among: ]
>>>  * installed packages
>>> [I--] [  ] sys-block/mtx-1.2.18 (0)
>>>
>>> It looks like I have 1.2.18
>>>
>>> John
>>>
>>
>> Ahh. If I manually load a tape using controls on the archive I get the
>> same. Bacula will pick this up correctly if I update slots in the
>> console however.
>>
>> dev6 ~ # mtx -f /dev/autochanger1 status
>>   Storage Changer /dev/autochanger1:2 Drives, 24 Slots ( 1 Import/Export
>> )
>> Data Transfer Element 0:Full (Storage Element 17 Loaded):VolumeTag =
>> A00036
>> Data Transfer Element 1:Full (Unknown Storage Element Loaded):VolumeTag
>> =
>> A00029
>>       Storage Element 1:Full :VolumeTag=A00030
>>       Storage Element 2:Empty:VolumeTag=
>>       Storage Element 3:Full :VolumeTag=A00058
>>       Storage Element 4:Full :VolumeTag=A00053
>>       Storage Element 5:Full :VolumeTag=A00023
>>       Storage Element 6:Full :VolumeTag=A00006
>>       Storage Element 7:Full :VolumeTag=A00007
>>       Storage Element 8:Full :VolumeTag=A00052
>>       Storage Element 9:Full :VolumeTag=A00028
>>       Storage Element 10:Full :VolumeTag=A00020
>>       Storage Element 11:Full :VolumeTag=A00054
>>       Storage Element 12:Full :VolumeTag=A00039
>>       Storage Element 13:Full :VolumeTag=A00048
>>       Storage Element 14:Full :VolumeTag=A00012
>>       Storage Element 15:Full :VolumeTag=A00068
>>       Storage Element 16:Full :VolumeTag=A00069
>>       Storage Element 17:Empty:VolumeTag=
>>       Storage Element 18:Full :VolumeTag=A00065
>>       Storage Element 19:Full :VolumeTag=A00066
>>       Storage Element 20:Full :VolumeTag=A00067
>>       Storage Element 21:Full :VolumeTag=A00062
>>       Storage Element 22:Full :VolumeTag=A00063
>>       Storage Element 23:Full :VolumeTag=A00064
>>       Storage Element 24 IMPORT/EXPORT:Empty:VolumeTag=
>
> My status output has reverted to 'Unknown Storage Element Loaded' today.
> I don't know why.  'update slots' does not affect the situation.  This
> means that 'loaded' does not return the correct value.  This renders the
> autochanger useless.  I'd like to know how to get this working.

I had tried the 'update slots' approach.  That doesn't fix it.  What does
fix it is getting Bacula to load a tape into the drive.  I achieved that
by running a job.  I now see:

   Data Transfer Element 0:Full (Storage Element 2 Loaded):VolumeTag =
AAM241L4

Next question: what does Bacula do correctly that mtx does not with
respect to loading a tape into the drive?


-- 
Dan Langille -- http://langille.org/


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