topic Re: /dev/rmt/0mn Permission denied in Operating System - HP-UX

/dev/rmt/0mn Permission denied

Bakos György — Tue, 13 Jan 2004 09:23:17 GMT

My problem is that I want to make a make_tape_recovery -x inc_entire=vg00 -x exclude=/tmp -x inc_entire=vg01 -a /dev/rmt/0mn
, but the error is /dev/rmt/0mn Permission denied
I have created an another device file c5t4d0BESTn, but the problem is the same.

I have found here an another forum with the same problem, but no answer is there:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=130600

Re: /dev/rmt/0mn Permission denied

Helen French — Tue, 13 Jan 2004 09:30:01 GMT

To start troubleshooting, I would try a simple tar command to test if the drive is okay and you have permission to write:

# tar -cvf /dev/rmt/0mn /tmp

Re: /dev/rmt/0mn Permission denied

Bakos György — Tue, 13 Jan 2004 09:33:08 GMT

I have checked that:
#dd if=/etc/hosts of=/dev/rmt/0mn

dd: cannot create /dev/rmt/0mn

Very interesant
The another device file was created with sam , but the problem is the same...

Re: /dev/rmt/0mn Permission denied

Jeff Schussele — Tue, 13 Jan 2004 09:36:50 GMT

Hi,

What does
ioscan -fnC tape
return?
Is your tape device *actually* 0mn?

Rgds,
Jeff

Re: /dev/rmt/0mn Permission denied

Fabio Ettore — Tue, 13 Jan 2004 09:40:42 GMT

Hi,

have you tried to change tape?
Anyway I would guess about an hardware problem, I suggest you to verify tape drive and cable functionalities.

Best regards,
Ettore

Re: /dev/rmt/0mn Permission denied

Bakos György — Tue, 13 Jan 2004 09:41:20 GMT

ioscan is OK

That works too:
mt rew
mt -t /dev/rmt/0mn rew

OK

Re: /dev/rmt/0mn Permission denied

Stuart Abramson_2 — Tue, 13 Jan 2004 09:41:34 GMT

I think that your tape device file has the wrong permissions:

# ioscan -fnkCtape
Class I H/W Path Driver S/W State H/W Type Description
==========================================================================
tape 0 1/0/1/0/0/1/0.1.0 stape CLAIMED DEVICE HP C5683A
/dev/rmt/0m /dev/rmt/c6t1d0BESTn
/dev/rmt/0mb /dev/rmt/c6t1d0BESTnb
/dev/rmt/0mn /dev/rmt/c6t1d0DDS
/dev/rmt/0mnb /dev/rmt/c6t1d0DDSb
/dev/rmt/c6t1d0BEST /dev/rmt/c6t1d0DDSn
/dev/rmt/c6t1d0BESTb /dev/rmt/c6t1d0DDSnb

# ll /dev/rmt/0m
crw-rw-rw- 2 bin bin 205 0x061000 Oct 16 14:13 /dev/rmt/0m

It must be:
...crw-rw-rw-

Re: /dev/rmt/0mn Permission denied

Helen French — Tue, 13 Jan 2004 09:45:06 GMT

Check your permission:

# ls -al /dev/rmt/0mn

Also, recreate currupted device files with:

# insf -e

Re: /dev/rmt/0mn Permission denied

Jeff Schussele — Tue, 13 Jan 2004 09:46:17 GMT

Hi,

OK - then check the tape & make sure it's not set to write-protect & try another tape.

Rgds,
Jeff

Re: /dev/rmt/0mn Permission denied

Bakos György — Tue, 13 Jan 2004 09:47:11 GMT

ls -al /dev/rmt/0mn
crw-rw-rw- 1 bin bin 205 0x054040 ...

Re: /dev/rmt/0mn Permission denied

Bakos György — Tue, 13 Jan 2004 09:48:29 GMT

Oh Oh

Write protect I will check it tomorrow

Re: /dev/rmt/0mn Permission denied

G. Vrijhoeven — Tue, 13 Jan 2004 09:49:26 GMT

Hi,

I agree. The tape must be write protected.

Gideon

Re: /dev/rmt/0mn Permission denied

Jeff Schussele — Tue, 13 Jan 2004 09:51:13 GMT

Hi,

Don't need to visually check for write-protect.
Run
mt -f /dev/rmt/0mn status
It will state write protect in the output IF the tape is set to such.

Rgds,
Jeff

Re: /dev/rmt/0mn Permission denied

Bakos György — Tue, 13 Jan 2004 09:56:36 GMT

yes
write protected

I am stupid(and a litle bit tired) and thanks for eweryone