topic System Panic in Operating System - HP-UX

System Panic

Senthilkumaran.T — Fri, 07 Dec 2001 21:23:05 GMT

Re: System Panic

Michael Tully — Fri, 07 Dec 2001 21:42:14 GMT

Hi,

This does look like some form of
disk or SCSI card problem. The first
thing I would do is to cut an ignite
tape (2 would be better) and then
test the disk(s) by running a dd
command on them:

dd if=/dev/dsk/cxtxdx of=/dev/null

Another test would to use 'mstm' and
test the SCSI card itself. From the
output of these, it will most likely
determine what happens next.

If you have a support agreement with
HP you can insist that components be
changed.

HTH
-Michael

Re: System Panic

Rita C Workman — Sat, 08 Dec 2001 22:20:55 GMT

I don't 'think' it's your disk. I believe it's the bus/controller. You need to call HP, it looks to me to be a hardware problem that needs to be addressed asap.

Rgrds,
Rita

Re: System Panic

ramesh_6 — Sun, 09 Dec 2001 08:14:14 GMT

Hi senthil,

waht i feel is that your SCSI bus controller has got a bag full of problems and it is identifying your good disks as fault ones. Call the memergency HP support and try to fix your SCSI bus.

Having an ignite image of your hard disks are also a very good idea.

regds
Ramesh

Re: System Panic

ramesh_6 — Sun, 09 Dec 2001 08:20:31 GMT

Hi Senthil,
I've some more information by which you can test your SCSI bus

Stm provides some funtions to hardware test.

Select device and run exercise.

The STM package provides a set of support tools for troubleshooting computer system hardware, including CPUs, memory, interface cards, mass storage devices, etc. Upon startup, STM can provide a system map of all of the hardware devices on your system. Using this system map, you can select devices, receive information, or execute online support tools.

STM comes in a few different versions:
xstm - X11 GUI stm
mstm - Menu based stm
cstm - Command line stm

Type a 'man stm' to get the basics.

You'll be able to test your SCSI interface with stm. Start xstm if you're running X11 and the SCSI interfaces will show up in the first window.

Re: System Panic

Santosh Nair_1 — Sun, 09 Dec 2001 10:19:25 GMT

It does sound like your SCSI controller has gone haywire. Its fairly rare to see two disks go bad at the same time...especially if they're on the same controller. Call HP and have them check out the controller. Btw, this would be a good reason to keep mirrors of root on a different controller.

-Santosh

Re: System Panic

Magdi KAMAL — Mon, 10 Dec 2001 09:18:29 GMT

Hi,

One of three problem you may have:
1. Problem with the scsi controller.
2. Problem with the two disks as mentioned by your output
"
Dec 4 16:35:43 atpti015 vmunix: LVM: vg[0].lv[1] has 2 fault disks on : pvnum=0 (dev=0x1f006000) pvnum=1 (dev=0x1f00f000)
"
3. Both of point1 and point2 ( But it's really very rare ).

Action:
-------
Immediately backup your vg00 by doing and Ignite tape.
Replace these two disks and restore your ignite tape on them( don't forget to set the right value for teh SCSI_ID on each disk ).
If the problem persist, you have to change you scsi controller also.

Magdi