[OmniOS-discuss] Identifying physical disk

[Richard Elling]

Hi CJ,
I'm away from my notes at the moment, but know that an mptsas instance's reported target number is not the same as the sd driver instance number. The most expeditious way to cross reference is to use sasinfo or, failing that, 

echo ::mptsas -t | mdb -k

which dumps the sas WWN to target port info.

If that still doesn't narrow the field, look at the per-disk error counters: 
iostat -E

Note: resets are tricky and you can be sure sd is trying to reset devices to wake them up. 

More later, when I get back to the office...
  -- richard



> On Nov 15, 2014, at 6:57 AM, CJ Keist <cj.keist at colostate.edu> wrote:
> 
> Hello,
>   Need some help identifying physical disk on my system.  My system got hung and last thing in the /var/adm/message file before the crash is follows:
> 
> Nov 14 13:31:12 projects2 scsi: [ID 107833 kern.warning] WARNING: /pci at 0,0/pci8086,340c at 5/pci1000,3020 at 0 (mpt_sas0):
> Nov 14 13:31:12 projects2       Disconnected command timeout for Target 48
> Nov 14 13:31:12 projects2 scsi: [ID 243001 kern.warning] WARNING: /pci at 0,0/pci8086,340c at 5/pci1000,3020 at 0 (mpt_sas0):
> Nov 14 13:31:12 projects2       mptsas_handle_event_sync: IOCStatus=0x8000, IOCLogInfo=0x31170000
> Nov 14 13:31:16 projects2 scsi: [ID 365881 kern.info] /pci at 0,0/pci8086,340c at 5/pci1000,3020 at 0 (mpt_sas0):
> Nov 14 13:31:16 projects2       Log info 0x31140000 received for target 48.
> Nov 14 13:31:16 projects2       scsi_status=0x0, ioc_status=0x8048, scsi_state=0xc
> Nov 14 13:31:16 projects2 scsi: [ID 107833 kern.warning] WARNING: /pci at 0,0/pci8086,340c at 5/pci1000,3020 at 0 (mpt_sas0):
> Nov 14 13:31:16 projects2       mptsas_check_task_mgt: Task 0x3 failed. IOCStatus=0x4a IOCLogInfo=0x0 target=48
> Nov 14 13:31:16 projects2 scsi: [ID 107833 kern.warning] WARNING: /pci at 0,0/pci8086,340c at 5/pci1000,3020 at 0 (mpt_sas0):
> Nov 14 13:31:16 projects2       mptsas_ioc_task_management failed try to reset ioc to recovery!
> 
> Then using the command "cfgadm -alv" shows that the /pci at 0,0/pci8086,340c at 5/pci1000,3020 at 0 is the controller in front of all the disks.  The output above does say "Target 48", I'm hoping that is the disk target so would be the one listed in the cfgadm command here:
> 
> c6::w50014ee2b2e8dc6a,0        connected    configured   unknown Client Device: /dev/dsk/c3t50014EE2B2E8DC6Ad0s0(sd48)
> unavailable  disk-path    n /devices/pci at 0,0/pci8086,340c at 5/pci1000,3020 at 0/iport at f:scsi::w50014ee2b2e8dc6a,0
> 
> Would this be the disk being reported in /var/adm/messages?
> 
> -- 
> C. J. Keist                     Email: cj.keist at colostate.edu
> Systems Group Manager           Solaris 10 OS (SAI)
> Engineering Network Services    Phone: 970-491-0630
> College of Engineering, CSU     Fax:   970-491-5569
> Ft. Collins, CO 80523-1301
> 
> All I want is a chance to prove 'Money can't buy happiness'
> 
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