an mps probelm

[Gregory Wright]

On 8/3/11 2:46 PM, Gregory Wright wrote:
> Hi Ken,
>
> On 8/3/11 1:02 PM, Kenneth D. Merry wrote:
>> On Wed, Aug 03, 2011 at 11:48:45 -0400, Gregory Wright wrote:
>>> Hi,
>>>
>>> I have an LSI SAS 9200-8e hba card.  It's connected to a Dell
>>> PowerVault 124T autoloader with an LTO4 drive.
>>>
>>> I installed 9.0-BETA1 yesterday and was able to successfully
>>> detect the tape drive (mps driver), but the hba doesn't find the 
>>> changer.
>>> I used camcontrol to force rescanning all luns but that
>>> didn't help either.
>> Try rescanning the particular LUN for the changer device, like this:
>>
>> camcontrol rescan 6:4:1
> The changer was found when I used that command.
>> (That is assuming the tape drive is at 6:4:0.)
>>
>>> Since I have just acquired this hardware I installed an OS
>>> reported to work with this autoloader/hba combination,
>>> ubuntu 11.04 server.  On ubuntu, the changer is found:
>>>
>>> gwright at greenhouse-george:~$ lsscsi -g
>>> [0:0:0:0]    disk    AMCC     9650SE-12M DISK  3.06  /dev/sdb  /dev/sg1
>>> [0:0:0:1]    disk    AMCC     9650SE-12M DISK  3.06  /dev/sdc  /dev/sg2
>>> [0:0:1:0]    disk    AMCC     9650SE-12M DISK  3.06  /dev/sdd  /dev/sg3
>>> [1:0:0:0]    tape    IBM      ULTRIUM-TD4      97F0  /dev/st0  /dev/sg5
>>> [1:0:0:1]    mediumx DELL     PV-124T          0080  /dev/sch0  
>>> /dev/sg6
>>> [2:0:0:0]    disk    ATA      ST3160811AS      3.AA  /dev/sda  /dev/sg0
>>> [6:0:0:0]    cd/dvd  MITSUMI  CD-ROM SR244W    T01A  /dev/sr0  /dev/sg4
>>>
>>> (On ubuntu the driver is mpt2sas.)
>>>
>>> It seems as if the mps driver is not seeing the additional lun
>>> hanging off the bus.
>> Yeah, it looks like the path inquiry CCB in the driver is telling CAM 
>> not
>> to scan LUNs.
>>
>>> This server is not in production yet so I can re-install 9.0-BETA1
>>> and run more tests, if that would help.
>> Try the attached patch, and let me know whether it works.
>>
>>
> The patch works.  Now I get
>
> greenhouse-george# camcontrol devlist
> <ST3160811AS 3.AAE>                at scbus0 target 0 lun 0 (ada0,pass0)
> <MITSUMI CD-ROM SR244W T01A>       at scbus4 target 0 lun 0 (cd0,pass1)
> <IBM ULTRIUM-TD4 97F0>             at scbus6 target 4 lun 0 (sa0,pass2)
> <DELL PV-124T 0080>                at scbus6 target 4 lun 1 (ch0,pass3)
> <AMCC 9650SE-12M DISK 3.06>        at scbus7 target 0 lun 0 (da0,pass4)
> <AMCC 9650SE-12M DISK 3.06>        at scbus7 target 0 lun 1 (da1,pass5)
> <AMCC 9650SE-12M DISK 3.06>        at scbus7 target 1 lun 0 (da2,pass6)
> greenhouse-george#
>
> I hope the change makes it into BETA2/RC1.  Thanks!
>
> Best,
> Greg
>
As a further test I installed mtx and verified that the changer
works under software control:

greenhouse-george# mtx -f /dev/pass3 status
   Storage Changer /dev/pass3:1 Drives, 16 Slots ( 0 Import/Export )
Data Transfer Element 0:Empty
       Storage Element 1:Full
       Storage Element 2:Full
       Storage Element 3:Full
       Storage Element 4:Full
       Storage Element 5:Empty
       Storage Element 6:Empty
       Storage Element 7:Empty
       Storage Element 8:Empty
       Storage Element 9:Empty
       Storage Element 10:Empty
       Storage Element 11:Empty
       Storage Element 12:Empty
       Storage Element 13:Empty
       Storage Element 14:Empty
       Storage Element 15:Empty
       Storage Element 16:Empty
greenhouse-george# mtx -f /dev/pass3 load 1
Loading media from Storage Element 1 into drive 0...done
greenhouse-george# mtx -f /dev/pass3 status
   Storage Changer /dev/pass3:1 Drives, 16 Slots ( 0 Import/Export )
Data Transfer Element 0:Full (Storage Element 1 Loaded)
       Storage Element 1:Empty
       Storage Element 2:Full
       Storage Element 3:Full
       Storage Element 4:Full
       Storage Element 5:Empty
       Storage Element 6:Empty
       Storage Element 7:Empty
       Storage Element 8:Empty
       Storage Element 9:Empty
       Storage Element 10:Empty
       Storage Element 11:Empty
       Storage Element 12:Empty
       Storage Element 13:Empty
       Storage Element 14:Empty
       Storage Element 15:Empty
       Storage Element 16:Empty
greenhouse-george# mtx -f /dev/pass3 unload
Unloading drive 0 into Storage Element 1...done
greenhouse-george# mtx -f /dev/pass3 status
   Storage Changer /dev/pass3:1 Drives, 16 Slots ( 0 Import/Export )
Data Transfer Element 0:Empty
       Storage Element 1:Full
       Storage Element 2:Full
       Storage Element 3:Full
       Storage Element 4:Full
       Storage Element 5:Empty
       Storage Element 6:Empty
       Storage Element 7:Empty
       Storage Element 8:Empty
       Storage Element 9:Empty
       Storage Element 10:Empty
       Storage Element 11:Empty
       Storage Element 12:Empty
       Storage Element 13:Empty
       Storage Element 14:Empty
       Storage Element 15:Empty
       Storage Element 16:Empty
greenhouse-george#

Looks like this issue is resolved.

Cheers,
Greg

-- 
Gregory Wright
Antiope Associates LLC
18 Clay Street
Fair Haven, New Jersey 07733
USA

+1 732 924-4549 [office]
+1 732 345-8378 [fax]
gwright at antiope.com