an mps probelm
gwright at antiope.com
Wed Aug 3 18:46:38 UTC 2011
On 8/3/11 1:02 PM, Kenneth D. Merry wrote:
> On Wed, Aug 03, 2011 at 11:48:45 -0400, Gregory Wright wrote:
>> 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)
I hope the change makes it into BETA2/RC1. Thanks!
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gwright at antiope.com
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