On Fri, August 14, 2009 1:26 pm, Dan Langille 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?
>
> FWIW, here is the status after running 'update slots' twice and then
> running a job:
>
> [dlangille@backup01 bacula]$ sudo /sbin/mtx -f /dev/sg4 status
> Storage Changer /dev/sg4:1 Drives, 38 Slots ( 36 Import/Export )
> Data Transfer Element 0:Empty
> Storage Element 1:Full :VolumeTag=AAM274L4
> Storage Element 2:Full :VolumeTag=AAM275L4
> Storage Element 3 IMPORT/EXPORT:Full :VolumeTag=AAM242L4
> Storage Element 4 IMPORT/EXPORT:Full :VolumeTag=AAM265L4
> Storage Element 5 IMPORT/EXPORT:Full :VolumeTag=AAM241L4
> Storage Element 6 IMPORT/EXPORT:Full :VolumeTag=AAM243L4
> Storage Element 7 IMPORT/EXPORT:Full :VolumeTag=AAM244L4
> Storage Element 8 IMPORT/EXPORT:Full :VolumeTag=AAM245L4
> Storage Element 9 IMPORT/EXPORT:Full :VolumeTag=AAM246L4
> Storage Element 10 IMPORT/EXPORT:Full :VolumeTag=AAM247L4
> Storage Element 11 IMPORT/EXPORT:Full :VolumeTag=AAM248L4
> Storage Element 12 IMPORT/EXPORT:Full :VolumeTag=AAM249L4
> Storage Element 13 IMPORT/EXPORT:Full :VolumeTag=AAM250L4
> Storage Element 14 IMPORT/EXPORT:Full :VolumeTag=AAM251L4
> Storage Element 15 IMPORT/EXPORT:Full :VolumeTag=AAM252L4
> Storage Element 16 IMPORT/EXPORT:Full :VolumeTag=AAM253L4
> Storage Element 17 IMPORT/EXPORT:Full :VolumeTag=AAM254L4
> Storage Element 18 IMPORT/EXPORT:Full :VolumeTag=AAM255L4
> Storage Element 19 IMPORT/EXPORT:Full :VolumeTag=AAM256L4
> Storage Element 20 IMPORT/EXPORT:Full :VolumeTag=AAM257L4
> Storage Element 21 IMPORT/EXPORT:Full :VolumeTag=AAM258L4
> Storage Element 22 IMPORT/EXPORT:Full :VolumeTag=AAM259L4
> Storage Element 23 IMPORT/EXPORT:Full :VolumeTag=AAM260L4
> Storage Element 24 IMPORT/EXPORT:Full :VolumeTag=AAM261L4
> Storage Element 25 IMPORT/EXPORT:Full :VolumeTag=AAM262L4
> Storage Element 26 IMPORT/EXPORT:Full :VolumeTag=AAM263L4
> Storage Element 27 IMPORT/EXPORT:Full :VolumeTag=AAM264L4
> Storage Element 28 IMPORT/EXPORT:Full :VolumeTag=AAM240L4
> Storage Element 29 IMPORT/EXPORT:Full :VolumeTag=AAM266L4
> Storage Element 30 IMPORT/EXPORT:Full :VolumeTag=AAM267L4
> Storage Element 31 IMPORT/EXPORT:Full :VolumeTag=AAM268L4
> Storage Element 32 IMPORT/EXPORT:Full :VolumeTag=AAM269L4
> Storage Element 33 IMPORT/EXPORT:Full :VolumeTag=AAM270L4
> Storage Element 34 IMPORT/EXPORT:Full :VolumeTag=AAM271L4
> Storage Element 35 IMPORT/EXPORT:Full :VolumeTag=AAM272L4
> Storage Element 36 IMPORT/EXPORT:Full :VolumeTag=AAM273L4
> Storage Element 37 IMPORT/EXPORT:Empty
> Storage Element 38 IMPORT/EXPORT:Empty
> [dlangille@backup01 bacula]$
>
>
> Then I issue a 'mount storage=LTO-4':
> *mount storage=LTO-4
> 3301 Issuing autochanger "loaded? drive 0" command.
> 3302 Autochanger "loaded? drive 0", result: nothing loaded.
> 3901 Unable to open device "LTO-4" (/dev/nst0): ERR=dev.c:474 Unable to
> open device "LTO-4" (/dev/nst0): ERR=No medium found
>
> *m
> 14-Aug 13:24 backup01.scs.myyearbook.com-d JobId 16: Using Device "LTO-4"
> 14-Aug 13:24 backup01.scs.myyearbook.com-s JobId 16: 3301 Issuing
> autochanger "loaded? drive 0" command.
> 14-Aug 13:24 backup01.scs.myyearbook.com-s JobId 16: 3302 Autochanger
> "loaded? drive 0", result: nothing loaded.
> 14-Aug 13:24 backup01.scs.myyearbook.com-s JobId 16: 3304 Issuing
> autochanger "load slot 5, drive 0" command.
> *
>
>
> Status now shows:
>
> [dlangille@backup01 bacula]$ sudo /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 =
> AAM241L4
> Storage Element 1:Full :VolumeTag=AAM274L4
> Storage Element 2:Full :VolumeTag=AAM275L4
> Storage Element 3 IMPORT/EXPORT:Full :VolumeTag=AAM242L4
> Storage Element 4 IMPORT/EXPORT:Full :VolumeTag=AAM265L4
> Storage Element 5 IMPORT/EXPORT:Empty
>
>
> With the dreaded Unknown.
NOTE: This UNKNOWN does not seem to affect the running of jobs. That seems
to go just fine.
I wonder if adjusting the mtx-changer script to move tapes to slots 1 and
or 2 first, then into the drive would help the 'loaded' command to always
return the right answer.
I original
I was having trouble runing the btape two tape test. btape uses the
'loaded' and wants a tape in both slot 1 and slot 2. When starting btape
without a tape in the drive:
]$ sudo /sbin/btape -c /etc/bacula/bacula-sd.conf /dev/nst0
Tape block granularity is 1024 bytes.
btape: butil.c:285 Using device: "/dev/nst0" for writing.
14-Aug 13:48 btape JobId 0: 3301 Issuing autochanger "loaded? drive 0"
command.
14-Aug 13:49 btape JobId 0: 3302 Autochanger "loaded? drive 0", result:
nothing loaded.
14-Aug 13:49 btape: Fatal Error at device.c:292 because:
dev open failed: dev.c:474 Unable to open device "LTO-4" (/dev/nst0):
ERR=No medium found
14-Aug 13:49 btape JobId 0: Fatal error: butil.c:194 Cannot open "LTO-4"
(/dev/nst0)
Instead, I load the tape from slot 2, and get the right value in 'Storage
Element'. Now btape still mentions slot 1 and 2 after issuing the fill
command.
[dlangille@backup01 bacula]$ sudo /sbin/btape -c
/etc/bacula/bacula-sd.conf /dev/nst0
Tape block granularity is 1024 bytes.
btape: butil.c:285 Using device: "/dev/nst0" for writing.
14-Aug 13:48 btape JobId 0: 3301 Issuing autochanger "loaded? drive 0"
command.
14-Aug 13:49 btape JobId 0: 3302 Autochanger "loaded? drive 0", result:
nothing loaded.
14-Aug 13:49 btape: Fatal Error at device.c:292 because:
dev open failed: dev.c:474 Unable to open device "LTO-4" (/dev/nst0):
ERR=No medium found
14-Aug 13:49 btape JobId 0: Fatal error: butil.c:194 Cannot open "LTO-4"
(/dev/nst0)
[dlangille@backup01 bacula]$ sudo /sbin/btape -c
/etc/bacula/bacula-sd.conf /dev/nst0
Tape block granularity is 1024 bytes.
btape: butil.c:285 Using device: "/dev/nst0" for writing.
14-Aug 13:50 btape JobId 0: 3301 Issuing autochanger "loaded? drive 0"
command.
14-Aug 13:50 btape JobId 0: 3302 Autochanger "loaded? drive 0", result is
Slot 2.
btape: btape.c:383 open device "LTO-4" (/dev/nst0): OK
*fill
This command simulates Bacula writing to a tape.
It requires either one or two blank tapes, which it
will label and write.
If you have an autochanger configured, it will use
the tapes that are in slots 1 and 2, otherwise, you will
be prompted to insert the tapes when necessary.
It will print a status approximately
every 322 MB, and write an EOF every 3.2 GB. If you have
selected the simple test option, after writing the first tape
it will rewind it and re-read the last block written.
If you have selected the multiple tape test, when the first tape
fills, it will ask for a second, and after writing a few more
blocks, it will stop. Then it will begin re-reading the
two tapes.
This may take a long time -- hours! ...
Do you want to run the simplified test (s) with one tape
or the complete multiple tape (m) test: (s/m)
1 - I'll run the test over night and report back on Monday.
2 - Perhaps that 'slots 1 and 2' is misleading. I'll see
Thanks for the eyes and ears.
--
Dan Langille -- http://langille.org/
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