topic ROOT DISK STALE EXTENT ISSUE in Operating System - HP-UX

ROOT DISK STALE EXTENT ISSUE

Neil Herring_1 — Fri, 22 Dec 2006 04:49:56 GMT

I have ONE stale extent on my root disk, as shown below:
00848 /dev/dsk/c0t6d0 00867 current /dev/dsk/c4t6d0 02734 stale
I have swapped out the root disk c4t6d0 and tried rebuilding it but the same stale extent was present which is strange.
We had an engineer out before who said that this could be a false error and we should swap out the primary root disk instead.
I just wanted to check if this was true as I guess that if it is then in fact the disk I have replaced c4t6d0 is now identical to the corrupt c0t6d0 and I need to put it back in quick?

Re: ROOT DISK STALE EXTENT ISSUE

Ivan Krastev — Fri, 22 Dec 2006 07:01:33 GMT

Use diagnostics, diskinfo to check both disks. Here is some info - http://www.docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

regards,
ivan

Re: ROOT DISK STALE EXTENT ISSUE

Mark Nieuwboer — Fri, 22 Dec 2006 07:27:53 GMT

stale outstand means your disk has broke on some place. Beter is to replace the disk.

grtz. Mark

Re: ROOT DISK STALE EXTENT ISSUE

George Liu_4 — Fri, 22 Dec 2006 08:50:07 GMT

it most likely an hardware issue but it could be caused by a sw bug. COntact HP if they have this type of error logged with your current sw products installed and kernels

Re: ROOT DISK STALE EXTENT ISSUE

Adisuria Wangsadinata_1 — Mon, 25 Dec 2006 23:11:03 GMT

Hi Neil Herring,

Yup, the possibility that other disk (c0t6d0) having a problem is there. You need to check both disk by using 'dd' command :

# dd if=/dev/rdsk/c0t6d0 of=/dev/null bs=1024k
# dd if=/dev/rdsk/c4t6d0 of=/dev/null bs=1024k

If you saw the I/O error, that's the disk that you should replace.

Hope this information can help.

Cheers,
AW