topic Re: How to diagnose fault? in Operating System - HP-UX

How to diagnose fault?

Mike Fisher_5 — Wed, 21 May 2003 07:52:40 GMT

HP 9000 D320 with 11i 32-bit:

My user reports:
"The DAT Drive [A3183A DDS-3] is failing with error # 5
I have tried 2 x tapes
[DDS-3 & DDS-2]
& it still fails"

1] Am I right in thinking it's an I/O error?

2] What extra info do I need from the user to diagnose this error?

Mike

Re: How to diagnose fault?

Steve Steel — Wed, 21 May 2003 08:12:55 GMT

Hi

A3183A
DDS2 DAT Drive

What does he use when it fails

Does tar work

check the firmware level

Steve Steel

Re: How to diagnose fault?

john korterman — Wed, 21 May 2003 08:44:43 GMT

Hi Mike,
sounds like an i/o error to me...
Maybe the user will not tell you how he got into this situation. Anyway, it would be a good idea to check if a process is keeping the device busy because of some unfinished operation.

regards,
John K.

Re: How to diagnose fault?

T G Manikandan — Wed, 21 May 2003 08:45:33 GMT

What you need to check it

errno 5 is I/O error.

Try changing tapes
|
|still errno 5
Try cleaning the drive
|
|still errno 5
|
|
MIght be a bad tape drive.
check /var/adm/syslog/syslog.log for any hardware messages

Revert

Re: How to diagnose fault?

Mike Fisher_5 — Wed, 21 May 2003 09:27:49 GMT

Steve:
Well spotted
I'm now told it's an A3542A
Which is DDS-3

T.G.:
Only 9951 to go

All:
I'll put forward your suggestions & let you know

Re: How to diagnose fault?

Mike Fisher_5 — Wed, 21 May 2003 12:07:10 GMT

The following errors are reported in usr/adm/syslog/syslog.log:

EMS Event Notification ------ Value: "CRITICAL (5)" for
Resource: "/storage/events/tapes/SCSI_tape/8_16_5.0.0"
(Threshold: >= " 3")
Execute the following command to obtain event details:
/opt/resmon/bin/resdata -R 161742850 -r /storage/events/tapes/SCSI_tape/8_16_5
.0.0 -n 161742851 -a
May 21 13:20:53 foscote vmunix: SCSI TAPE: dev = 0xcd010000 I/O error during
close

The trace for this error:

What do you think?
Replace drive?

Re: How to diagnose fault?

Steven E. Protter — Wed, 21 May 2003 12:11:48 GMT

I'd first run dmesg look for lbolts. If you find one check cables, connections terminators and then boot the system.

If you still have a problem, replace the tape drive.

ioscan -fnC tape

Should show the drive as claimed with its device driver.

SEP

Re: How to diagnose fault?

S.K. Chan — Wed, 21 May 2003 12:56:07 GMT

It sounds like the tape drive does need to be replaced. From the error message, it indicated that the could be a medium (or tape) error. So I would try using another DAT tape and see if it still produces the error. If it does then the drive will need replacement. If you can, give a call to HP so that they can decode the error accurately for you.

Re: How to diagnose fault?

Ross Zubritski — Wed, 21 May 2003 13:10:42 GMT

Check all cabling and replace the drive.

Regards,

RZ

Re: How to diagnose fault?

Mike Fisher_5 — Wed, 21 May 2003 13:37:47 GMT

Replaced drive
All A-OK now
Thanks all

Be good

Lapin on the way
Mike