Re: [Bacula-users] mtx: Unknown Storage Element Loaded

On Fri, Aug 14, 2009 at 1:26 PM, Dan Langille<dan AT langille DOT org> wrote:
>
> On Fri, August 14, 2009 12:23 pm, John Drescher wrote:
>> On Fri, Aug 14, 2009 at 12:01 PM, Dan Langille<dan AT langille DOT org> 
>> wrote:
>>> On Fri, August 14, 2009 11:39 am, Dan Langille wrote:
>>>>
>>>> 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
>>>
>>> I dispute the above now.
>>>
>>> I go with what Alan Brown said:
>>>
>>>> This happens consistently with tapes loaded out of i/o slots and the
>>>> only
>>>> solution I've found is not to put tapes in them.
>>>
>>> We have 38 slots, 36 of which are labeled IMPORT/EXPORT.  Seems I should
>>> change this.  I hope it is configurable.
>>>
>> I can tell you that my IMPORT/EXPORT slot does work correctly after a
>> slight modification of the mtx-changer script. Although after I put a
>> tape in it the first time I run update slots bacula says there are 23
>> slots instead of 24 so it ignores slot 24. I run update slots a second
>> time and all is well.
>
> What did your mtx-changer modification do?
>

dev6 bacula # cat mtx-changer.patch
--- mtx-changer.old     2008-05-15 15:32:59.000000000 +0200
+++ mtx-changer 2008-05-15 15:13:12.000000000 +0200
@@ -188,7 +188,7 @@
 #     ${MTX} -f $ctl inventory
       ${MTX} -f $ctl status >${TMPFILE}
       rtn=$?
-      cat ${TMPFILE} | grep " Storage Element [0-9]*:.*Full" | awk
"{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
+      cat ${TMPFILE} | sed "s/ IMPORT\/EXPORT//" | grep " Storage
Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full
*\(:VolumeTag=\)*//"
 #
 # If you have a VXA PacketLoader and the above does not work, try
 #  turning it off and enabling the following line.


This was added for bacula to recognize the barcode for slots labeled
IMPORT/EXPORT. I kind of doubt that this is your issue.

Can you post the output of update slots. And possibly query 15


John

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