topic Re: K400 in Operating System - HP-UX

K400

rodi — Tue, 27 Nov 2001 01:45:21 GMT

Hi,

I realised that there are some errors reflected on the syslog.log file showing 'SCSI:
Async
write error - dev: b 31 0x025000, errno: 5, resid:8192'.
This happens once on Nov 13 17:35:22
and did not encountered since then, please advise on the possible cause.
What is the meaning of the error?

Regards,

Re: K400

Mary Ann Lipa — Tue, 27 Nov 2001 02:09:49 GMT

Hi Rodi,
What's the device at c2t5d0?
run ioscan -fn and check whose device driver is c2t5d0

not sure what the problem is all about yet, but it could be due to a disocnnected or missing device (probably due to a system restart/power trip)
d_b

Re: K400

Bill Hassell — Tue, 27 Nov 2001 03:38:36 GMT

This is definitely a disk error. Use the command: lssf /dev/dsk/c2t5d0 to decode the address of the disk. errno 5 means an I/O error has been detected by the driver.

Since it occurred a couple of weeks ago and only occurred once, there is no way to know if this was caused by someone changing cables while the system is running (never recommended!) or a transient power problem (someone kicked the power cable?).

It's a good idea to look for errors and warnings in syslog automatically everyday using a cron job.

Re: K400

Steven Sim Kok Leong — Tue, 27 Nov 2001 05:47:39 GMT

Hi,

To add on, you can test your harddisk's integrity with mstm/cstm or dd.

Example of using dd:

# dd if=/dev/dsk/c0t3d0 of=/dev/null bs=8192

Hope this helps. Regards.

Steven Sim Kok Leong
Brainbench MVP for Unix Admin
http://www.brainbench.com

Re: K400

Printaporn_1 — Tue, 27 Nov 2001 07:56:25 GMT

using xstm/mstm and check logtool , you could know more in detail.