topic Re: is der any option in HP-UX to flash led of faulty disk? in Operating System - HP-UX

is der any option in HP-UX to flash led of faulty disk?

Avinash Agarkar — Thu, 05 Jun 2008 03:21:58 GMT

is der any option in HP-UX to flash led of faulty disk?

Thanks,
Avinash

Re: is der any option in HP-UX to flash led of faulty disk?

Jeeshan — Thu, 05 Jun 2008 03:27:36 GMT

replace the disk. :-)

Re: is der any option in HP-UX to flash led of faulty disk?

Avinash Agarkar — Thu, 05 Jun 2008 03:32:00 GMT

Hi,

The server is some where else and the disk is not showing any fail indication, the engineer is not able to identify the fail disk.

Avinash

Re: is der any option in HP-UX to flash led of faulty disk?

Torsten. — Thu, 05 Jun 2008 04:13:12 GMT

It depends on the hardware if you can flash the LED of a disk or not.

But normally, if you know the hardware path and the hardware details it should not be that problem to find the disk.

If you post more information, we could probably help you ...

Re: is der any option in HP-UX to flash led of faulty disk?

Jeeshan — Thu, 05 Jun 2008 04:22:59 GMT

Check this link

http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=6602

Re: is der any option in HP-UX to flash led of faulty disk?

Torsten. — Thu, 05 Jun 2008 04:28:53 GMT

"fruled" is not related to disks, from the man page

"The fruled command flashes/turns off attention LEDs of cells or I/O chassis in the local complex"

Again, it always depends on the used hardware.

Re: is der any option in HP-UX to flash led of faulty disk?

Avinash Agarkar — Thu, 05 Jun 2008 04:35:13 GMT

Hi torsen,

Can you please guide me to identify which disk is failed with the below mention hardware path.

disk 6 6/2/0.4.0 sdisk NO_HW DEVICE SEAGATE ST39175LC
/dev/dsk/c3t4d0 /dev/rdsk/c3t4d0

Re: is der any option in HP-UX to flash led of faulty disk?

Jeeshan — Thu, 05 Jun 2008 04:43:47 GMT

>>disk 6 6/2/0.4.0 sdisk NO_HW DEVICE SEAGATE ST39175LC
/dev/dsk/c3t4d0 /dev/rdsk/c3t4d0

do the pvdisplay command

#pvdisplay -v /dev/dsk/c3t4d0

Re: is der any option in HP-UX to flash led of faulty disk?

Torsten. — Thu, 05 Jun 2008 04:44:38 GMT

As mentioned before, you need to know the server and the disk chassis models, maybe some (dip switch) settings of the chassis too.

Re: is der any option in HP-UX to flash led of faulty disk?

Kapil Jha — Thu, 05 Jun 2008 05:09:31 GMT

I do not think there is any option in HPUX to flash led.
In tru64 it is there.(hwmgr -flash light)
Here if you have not seen hardware may be a bit complex for you to locate ddisk.
If hardware engineer is not able to locate ask vendor to send snother person to change hardware.
Dont try to play with server if it is critical.
BR,
kapil

Re: is der any option in HP-UX to flash led of faulty disk?

Torsten. — Thu, 05 Jun 2008 05:12:42 GMT

With some hardware you can do this, with other hardware you cannot - it depends.

Please post the results of these commands first:

# model
# ioscan -fn
# echo "map"|/usr/sbin/cstm

Re: is der any option in HP-UX to flash led of faulty disk?

Fabien GUTIERREZ — Thu, 05 Jun 2008 06:50:00 GMT

you cannot but to ensure you re replacing the disk you can use a trick dd if=yourbaddisk of=/dev/null
this ll bring activity to your faulty disk and ll make it "flash"

Re: is der any option in HP-UX to flash led of faulty disk?

Torsten. — Thu, 05 Jun 2008 06:53:50 GMT

I strongly doubt if you can "bring activity" to a dead disk, because the status is "NO_HW" already ...

;-)

Re: is der any option in HP-UX to flash led of faulty disk?

Fabien GUTIERREZ — Thu, 05 Jun 2008 08:28:42 GMT

a faulty disk do not switch to no hardware since it s connected and visible and won t change until you do an ioscan that could result in such a status

Re: is der any option in HP-UX to flash led of faulty disk?

Torsten. — Thu, 05 Jun 2008 08:33:41 GMT

But Avinash already posted this line:

disk 6 6/2/0.4.0 sdisk NO_HW DEVICE SEAGATE ST39175LC

BTW, not only the admin is running an ioscan, the diagnostic does it periodically.

Re: is der any option in HP-UX to flash led of faulty disk?

Hein van den Heuvel — Thu, 05 Jun 2008 11:04:38 GMT

Avinash,

How many "good" disks are there?

If is it not too many you can use the 'dd' trick Fabian mentioned to create activity on the good disks and thus make clear which disks NOT to touch.

Create a little script to go over a list of good disk, and in a constant loop issue:
dd /if=$good /of=/dev/null count=100

fwiw,
Hein.

Re: is der any option in HP-UX to flash led of faulty disk?

Fabien GUTIERREZ — Thu, 05 Jun 2008 11:05:53 GMT

oh yess missed that line from avinash so no way to make it blink unfortunately

Re: is der any option in HP-UX to flash led of faulty disk?

Torsten. — Thu, 05 Jun 2008 11:17:12 GMT

It's a good idea to exclude good disks, but on a very busy system this may not 100% safe.
IMHO the most reliable is to follow the hardware path ...