topic Re: moved disk? in Operating System - HP-UX

moved disk?

jim bidebo — Thu, 04 Oct 2001 13:22:17 GMT

i moved a disk from one workstation to another both running 10.20...
if i run ioscan -fC disk if finds the new disk.
and if i starts sam and disk devices it finds the new disk, but it says that its size is 0.
any ideas?
i cant get any access to the disk...

Re: moved disk?

Stefan Farrelly — Thu, 04 Oct 2001 13:25:34 GMT

When you see the moved disk using ioscan what happens if you do a diskinfo on the /dev/rdsk/cxxxxx device file ? does it report the correct size or does it say zero ? If zero then the disk is not connected properly.

Re: moved disk?

jim bidebo — Thu, 04 Oct 2001 13:31:27 GMT

well the disk is connected in the right way...
and it has been working in this way before.
(and the scsi chain is terminated right after the disk)

# diskinfo /dev/rdsk/c0t1d0
SCSI describe of /dev/rdsk/c0t1d0:
vendor: SEAGATE
product id: ST39173WD
type: direct access
size: 0 Kbytes
bytes per sector: 0

Re: moved disk?

G. Vrijhoeven — Thu, 04 Oct 2001 13:36:52 GMT

hi Jim,

After you did an ioscan you can create device files with the insf -e command, now you can can locate device files and do an diskinfo -v /dev/sdsk/c?t?d? to see if your disk is OK. if that shows size=0 you have a problem with your disk.

hope this will get you started,

Gideon

Re: moved disk?

Stefan Farrelly — Thu, 04 Oct 2001 13:46:34 GMT

Ive seen this happen before, basically the SCSI driver gets confused. This is shown by it seeing the device (CLAIMED) but size is zero. No option to reboot to reset the driver im afraid.

Re: moved disk?

Sridhar Bhaskarla — Thu, 04 Oct 2001 13:51:01 GMT

Jim,

Try to open the workstation and see if the LED on the drive is on continously. If so, the disk is bad. I know a problem with one model of the Quantum disks. We used to tap it for sometime to get it working.

-Sri

Re: moved disk?

jim bidebo — Tue, 09 Oct 2001 10:35:41 GMT

ive rebooted the mashine serveral times without any result.. can add that the drive is an external drive.. (segate)...
ive also turned on and of the drive a couple of times.
the device ive created with the mknod command.. (and its accurate) (and its created both in /dev/dsk and /dev/rdsk (different values thou))

Re: moved disk?

harry d brown jr — Tue, 09 Oct 2001 10:52:51 GMT

Jim,

THe /dev/dsk and the /dev/rdsk files should be the same name, only a different "major" number, with the "minor" number the same.