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SCSI sense code explination needed

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Ceesjan van Hattum
Esteemed Contributor

SCSI sense code explination needed

Hi,
Regularly I've got the message:

SCSI: bp: 03ea2c00
dev: cd030000
cdb: 00 00 00 00 00 00
status: (02) Check Condition
sense data: 70 00 06 00 00 00 00 0e 00 00 00 00 29 00 00 00
00 00
sense key: (06) Unit Attention
additional sense code: (29)
additional sense code qualifier: (00)

Cleaning the tape unit and new tapes did not stop these messages. Can anybody tell me what the actual codes (incl. additional 29) actually means...?

Regards,
Ceesjan

 

P.S. This thread has been moved from Storage>General to Tape Libraries and Drives. -HP Forum Moderator

7 REPLIES
harry d brown jr
Honored Contributor

Re: SCSI sense code explination needed


What kind of tape drive is it?

Have you double checked the cabling?

What firmware is on the tape drive? - use stm or a variation of such

What is your OS level?


live free or die
harry
Live Free or Die
Bill McNAMARA_1
Honored Contributor

Re: SCSI sense code explination needed

a quick ioscan -fnkC tape might help..

Later,,
Bill
It works for me (tm)
Ceesjan van Hattum
Esteemed Contributor

Re: SCSI sense code explination needed

DEVICE: HP C1537A
OS: HP-UX B.11.00 C
Cabling checked: normal
st -f /dev/rmt/0m -s :Device is OK and available

ftsmaint ls 14/0/3.0.0
H/W Path : 14/0/3.0.0
Device Name : stape
Description : HP C1537A
Class : tape
Instance : 0
State : CLAIMED
Status : Online
Modelx : t805
Sub Modelx : 00
Fault Count : 0
Fault Code : -
MTBF : Infinity
MTBF Threshold : 14400 Seconds
Weight. Soft Errors : 1
Min. Number Samples : 6

Discomfort on ejection of tape.
Similar device on other machine ejects in a few seconds. This one tries about 7 times and only then ejects.

I'm sure that replacement of the device will help me, but i'm interested in the actual sense-code translations as well...
Allan Cook
Occasional Visitor

Re: SCSI sense code explination needed

According to the scsi spec:

29 00 DTLPWRSOMC POWER ON, RESET, OR BUS DEVICE RESET OCCURRED

- Allan
Sanjay_6
Honored Contributor
Solution

Re: SCSI sense code explination needed

Ceesjan van Hattum
Esteemed Contributor

Re: SCSI sense code explination needed

Allan give valuable information, but Sanjay really knows how to answer!

Thanks and Greetings.
CJ

Re: SCSI sense code explination needed

cdb: 00 00 00 00 00 00
Is the 'command data buffer' and the six-byte command is 'test unit ready'.

status: (02) Check Condition
Is the reply to the command. The device has more information than can be conveyed in a single byte response.

SCSI protocol requires use of 'Request Sense' command. The act of getting sense information clears the condition that caused the 'Check Condition' status.

sense key: (06) Unit Attention
Indicates something changed since the last time the device (target is a better term) was used.

additional sense code: (29)
Means target was just reset. In practice this usually means the power was just turned on. Often called ASC.

The ASCQ adds no information for this Sense code and ASC.

The bottom line: This 6/29/00 is perfectly normal. It happens every time a SCSI device is turned on.