topic Re: Remove special file... in Operating System - HP-UX

Remove special file...

OLIVA_1 — Mon, 28 Aug 2006 08:00:05 GMT

Hello,

I would like remove Ultrium drive below which is in State "NO_HW".
I have removed all special files with rmsf command but I alway have the line:

tape 0 0/0/1/0.1.0 stape NO_HW DEVICE HP Ultrium 1-SCSI

This tape drive doesn't exist anymore.

Someone can help me ?

(root)#ioscan -fnCtape
Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
tape 0 0/0/1/0.1.0 stape NO_HW DEVICE HP Ultrium 1-SCSI
/dev/rmt/0m /dev/rmt/0mn /dev/rmt/c0t1d0BEST /dev/rmt/c0t1d0BESTn
/dev/rmt/0mb /dev/rmt/0mnb /dev/rmt/c0t1d0BESTb /dev/rmt/c0t1d0BESTnb
tape 4 0/0/1/0.2.0 stape CLAIMED DEVICE HP C1537A
/dev/rmt/1m /dev/rmt/4m /dev/rmt/c0t2d0BEST /dev/rmt/c0t2d0DDS
/dev/rmt/1mb /dev/rmt/4mb /dev/rmt/c0t2d0BESTb /dev/rmt/c0t2d0DDSb
/dev/rmt/1mn /dev/rmt/4mn /dev/rmt/c0t2d0BESTn /dev/rmt/c0t2d0DDSn
/dev/rmt/1mnb /dev/rmt/4mnb /dev/rmt/c0t2d0BESTnb /dev/rmt/c0t2d0DDSnb
tape 3 0/0/1/0.4.0 stape CLAIMED DEVICE HP Ultrium 1-SCSI
/dev/rmt/3m /dev/rmt/3mn /dev/rmt/c0t4d0BEST /dev/rmt/c0t4d0BESTn
/dev/rmt/3mb /dev/rmt/3mnb /dev/rmt/c0t4d0BESTb /dev/rmt/c0t4d0BESTnb
(root)#

Thanks,

Re: Remove special file...

Jaime Bolanos Rojas. — Mon, 28 Aug 2006 08:02:41 GMT

Hi Oliva!

Did you already tried rmsf -H (hw path) ?

Regards,

Jaime.

Re: Remove special file...

Pupil_1 — Mon, 28 Aug 2006 08:03:01 GMT

reboot should clear the Unclaimed H/W !!

Re: Remove special file...

freddy_21 — Mon, 28 Aug 2006 08:05:55 GMT

hello Olivia,

reboot your server. it can help you to remove the NOHW state.

thanks
freddy

Re: Remove special file...

David Child_1 — Mon, 28 Aug 2006 08:12:16 GMT

Oliva,

Your 'rmsf' probably worked fine, but the system still has records of this device. Then when you run 'ioscan -fnCtape' it re-creates the "missing" device files.

If you run 'rmsf' as before (or using the -H flag as listed) it will get rid of the device files (that is all rmsf does). Then, during the next reboot everything should be cleared up.

David

Re: Remove special file...

Bill Hassell — Mon, 28 Aug 2006 08:13:57 GMT

ioscan is looking at kernel memory so although the device is gone, it will not disappear from ioscan until the system reboots. The kernel finds the previously installed hardware from /stand/ioconfig during reboot and scans for new hardware to add it to ioconfig.

Re: Remove special file...

Ralph Grothe — Mon, 28 Aug 2006 08:27:58 GMT

From my experience exactly what Jamie advised you to do generally worked.
I have several times attached and detached external streamers, and mostly it worked although on shouldn't do it (but I always powered the drive off ;-).
Also whenever some SAN disks are detached from an hpux host by our SAN admin this is what I run afterwards, and all NO_HW entries usually disappear

# /usr/sbin/ioscan -Fdsdisk|awk -F: '/NO_HW/{print$11}'|xargs -n1 rmsf -v -H

Re: Remove special file...

OLIVA_1 — Mon, 28 Aug 2006 09:32:39 GMT

Thanks to all.

rmsf -H 0/0/1/0.1.0

works fine !