vmunix: SCSI: Unrecoverred Deferred Error from syslog

[Leah Chow]

I rebooted the HPUX server rp3440 last night, it couldn't be booted up at beginning, then i had to run fsck manually to fix the mirror disk problem.

I checked the syslog file this morning, it gave me couple of error messages like this:

Nov 7 23:16:27 ERP vmunix: SCSI: Unrecoverred Deferred Error (dev = 0xcb042000, lba = 0x1e3322)
Nov 7 23:16:32 ERP vmunix: SCSI: Unrecoverred Deferred Error (dev = 0xcb042000, lba = 0x1e3323)
Nov 7 23:16:39 ERP vmunix: SCSI: Unrecoverred Deferred Error (dev = 0xcb042000, lba = 0x1e3324)

Could someone help me to explain this error message? and how to fix it?

Thanks
Leah

[Jaime Bolanos Rojas.]

Leah,

That error could be Hardware problem or firmware upgrade needed. You need more details to fix this issue, you might want to install STM on the system to see if it generates an error or log that might give you more detailed info to work with.

Regards,

Jaime.

[Prashanth.D.S · Accepted solution]

Hi Leah,

Seems like you have some HW issue with disk c4t2d0 was the disk replaced ?? If not suggest you to go for replacement now..

You may also think of running dd on this disk and check if there are any write/read errors for this disk in cstm.

# dd if=/dev/rdsk/c4t2d0 of=/dev/null bs=1024 ==> for complete disk.

If this comes back with IO errors then go for replacement. Also check the LVM patches along with SCSI patches, keep them uptodate.

Best Regards,
Prashanth

[ksaj]

Hi

Try by

ll /dev/*/* | grep 1e3322

This will list the disk .The issue could be with this disk

[Leah Chow]

Thank you guys, I used the STM, didn't find any problems actually. Then I did dd, Prashanth's way.

Here is the output:

dd read error: I/O error
0+0 records in
0+0 records out


It really means the disk has problem, thank you again. Really appreciate it.

[Sandman!]

The major and minor number of the faulty device is encoded within 0xcb042000 in hex. And the major number points to a SCSI controller i.e. 0xcb = 203 (dec).

# lsdev 203

...so you may want to look at replacing the SCSI controller which is attached to /dev/dsk/c4t2d0 as well as the disk itself.

~hope it helps

[Leah Chow]

Thank you all for your help, the problem has been solved. We tried to replace the disks but not successful,it is the slot which hold the disk has problem.

Leah