topic Re: SCSI ERROR in Operating System - HP-UX

SCSI ERROR

debasish chakraborty — Sun, 22 Jan 2006 09:38:52 GMT

I HAVE GOT SOME ERROR MESSGAE IN SYSLOG.LOG FILE:
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc073000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc073000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc074000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc074000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc075000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc075000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc076000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc076000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc077000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc077000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc078000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc078000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc079000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc079000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc07a000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc07a000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc07b000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc07b000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc07c000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc07c000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc07d000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc07d000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc07e000
Jan 9 22:54:13 suboz031 vmunix: SCSI: Attempt to access partially open device -- dev: bc07e000

CAN ANYBODY EXPLAIN THE ROOT CAUSE?

Re: SCSI ERROR

Jakes Louw — Sun, 22 Jan 2006 11:07:00 GMT

a) disk array/tower/cabinet is switched off
b) scsi card has failed
c) scsi terminator has failed/been removed
d) scsi cable is faulty
e) some other problem in daisy chain

Re: SCSI ERROR

john korterman — Sun, 22 Jan 2006 13:03:10 GMT

Hi,

check Document ID: AUSRCKBRC00000687
in the technical knowledge base

regards,
John K.

Re: SCSI ERROR

Sameer_Nirmal — Sun, 22 Jan 2006 13:18:34 GMT

Hi,

The message means a SCSI device status could not be known completly through SCSI commands internally. Thats why it is referred as "partially opened". This SCSI device could be a LUN created on disk array.
The disk array who create a temporary LUNs e.g for split BCVs may be cause of this message in syslog.

If you don't have problem with the SCSI device in your setup, then this message could be considred as "informative". SCSI I/O Cummulative patch ( latest PHKL_32090 for 11.11) could be applied to avoid those "informative" messages. Thereafter if SCSI level debugging is required , a flag could be set producing such messages in syslog.

If there is genuine problem with a SCSI device, then it should be fixed depending on the situation, may be at array side and hardware level etc.

Re: SCSI ERROR

Michael Denney — Sun, 22 Jan 2006 13:53:31 GMT

The messages appears to be for many disks. I would take a closer at your scsi cards or hba cards. If on a storage array, I would investigate if there is any error messages on the storage array software.