Remove special file...

[OLIVA_1]

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,

[Jaime Bolanos Rojas. · Accepted solution]

Hi Oliva!

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

Regards,

Jaime.

[Pupil_1]

reboot should clear the Unclaimed H/W !!

[freddy_21]

hello Olivia,

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

thanks
freddy

[David Child_1]

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

[Bill Hassell]

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.

[Ralph Grothe]

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

[OLIVA_1]

Thanks to all.


rmsf -H 0/0/1/0.1.0

works fine !