topic Re: Command to find the tapes status in HPUX 10.2 in Operating System - HP-UX

Command to find the tapes status in HPUX 10.2

HP UNIX Professionals — Wed, 11 Nov 2009 15:42:25 GMT

Hi Experts,

We have B.10.20 A 9000/803 HP UX box. i want to know the status of tpae in 0mn. Please let me the command to find the tapes status in HPUX 10.2

(Such as mr -f /dev/rmt/Omn status)

Thanks in advance

Re: Command to find the tapes status in HPUX 10.2

James R. Ferguson — Wed, 11 Nov 2009 15:49:40 GMT

Hi:

You could probably do:

# mt -t /dev/rmt/0mn rew

...and examine the return code ($?).

http://docs.hp.com/en/B2355-90128/mt.1.html

Regards!

...JRF...

Re: Command to find the tapes status in HPUX 10.2

HP UNIX Professionals — Wed, 11 Nov 2009 16:00:29 GMT

when i run the mt -t /dev/rmt/0m rew command, getting output like

mt -t /dev/rmt/0m rew
/dev/rmt/0m: No such device or address
# mt -t /dev/rmt/0mb rew
/dev/rmt/0mb: No such device or address

Re: Command to find the tapes status in HPUX 10.2

James R. Ferguson — Wed, 11 Nov 2009 16:06:11 GMT

Hi (again):

> when i run the mt -t /dev/rmt/0m rew command, getting output like
mt -t /dev/rmt/0m rew
/dev/rmt/0m: No such device or address
# mt -t /dev/rmt/0mb rew
/dev/rmt/0mb: No such device or address

First, use a Berkley, no-rewind device, like '/dev/rmt/0mnb'.

An 'ioscan -kfnC tape' will show your available tape devices.

Regards!

...JRF...

Re: Command to find the tapes status in HPUX 10.2

Pete Randall — Wed, 11 Nov 2009 16:07:57 GMT

You need to substitue the correct device file for your tape device. You can find this with the "ioscan -kfnCtape" command. The most common mistake is typing the letter O (oh) instead of 0 (zero). I can't tell from your posting if maybe that's what you've done or not.

Pete

Re: Command to find the tapes status in HPUX 10.2

Johnson Punniyalingam — Wed, 11 Nov 2009 16:19:48 GMT

ioscan -fnC tape

mt -f /dev/rmt0mn rewind

for more information (man mt)

Re: Command to find the tapes status in HPUX 10.2

Vishu — Wed, 11 Nov 2009 16:30:46 GMT

Hi,

First do (to know about the tapes in the server)

# ioscan -fnC tape

then, with the correct device name, perform

# mt -f /dev/rmt/?mn rew

# mt -f /dev/rmt/?mn stat

where ? should be replaced with your correct tape drive name.

Re: Command to find the tapes status in HPUX 10.2

HP UNIX Professionals — Wed, 11 Nov 2009 16:31:11 GMT

Hi Jonson

In ioscan -fnC it showing the tape
But when i run the command mt is shoiwn errro

# ioscan -fnC tape
Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
tape 0 8/16/5.0.0 stape CLAIMED DEVICE HP C1537A
/dev/rmt/0m /dev/rmt/0mn /dev/rmt/c1t0d0BEST /dev/rmt/c1t0d0BESTn
/dev/rmt/0mb /dev/rmt/0mnb /dev/rmt/c1t0d0BESTb /dev/rmt/c1t0d0BESTnb

# mt -t /dev/rmt/0mn rew
/dev/rmt/0mn: No such device or address

Re: Command to find the tapes status in HPUX 10.2

Michal Kapalka (mikap) — Wed, 11 Nov 2009 16:35:21 GMT

hi,

did you try it second time ???

mikap

Re: Command to find the tapes status in HPUX 10.2

OldSchool — Wed, 11 Nov 2009 21:11:41 GMT

1) "mt -f /dev/rmt...." note that at 10.20, the "status" command wasn't available. It was added to 11.0 with later patches, and should have been there out of the box with current OS releases

2) can you read or write /dev/rmt/0mn with something like tar?

what does "ls -l /dev/rmt" show?

Re: Command to find the tapes status in HPUX 10.2

Martín García — Thu, 12 Nov 2009 15:55:41 GMT

pls, check the syntax

mt -f

maybe type letter t instead f

regards

Re: Command to find the tapes status in HPUX 10.2

OldSchool — Thu, 12 Nov 2009 16:51:32 GMT

at 10.20, both the "-t" and "-f" were supported, although "-t" was noted as "obsolescent".

besides, the errors noted are complaining about the device .....

Re: Command to find the tapes status in HPUX 10.2

HP UNIX Professionals — Mon, 16 Nov 2009 16:26:51 GMT

Hi Experts,

I am getting the following output and I am not able to run Ignite Backup.

# ioscan -fnC tape
Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
tape 0 8/16/5.0.0 stape CLAIMED DEVICE HP C1537A
/dev/rmt/0m /dev/rmt/0mn /dev/rmt/c1t0d0BEST /dev/rmt/c1t0d0BESTn
/dev/rmt/0mb /dev/rmt/0mnb /dev/rmt/c1t0d0BESTb /dev/rmt/c1t0d0BESTnb
# mt -t /dev/rmt/0m rew
/dev/rmt/0m: No such device or address
# mt -t /dev/rmt/0mb rew
/dev/rmt/0mb: No such device or address
#

# ls -l /dev/rmt
total 0
crw-rw-rw- 2 bin bin 205 0x010000 Nov 6 02:28 0m
crw-rw-rw- 2 bin bin 205 0x010080 Jun 10 1996 0mb
crw-rw-rw- 2 bin bin 205 0x010040 Nov 16 09:53 0mn
crw-rw-rw- 2 bin bin 205 0x0100c0 Jun 10 1996 0mnb
crw-rw-rw- 2 bin bin 205 0x010000 Nov 6 02:28 c1t0d0BEST
crw-rw-rw- 2 bin bin 205 0x010080 Jun 10 1996 c1t0d0BESTb
crw-rw-rw- 2 bin bin 205 0x010040 Nov 16 09:53 c1t0d0BESTn
crw-rw-rw- 2 bin bin 205 0x0100c0 Jun 10 1996 c1t0d0BESTnb
crw-r--r-- 1 bin bin 205 0xfffffe Jun 10 1996 stape_config

Re: Command to find the tapes status in HPUX 10.2

Torsten. — Mon, 16 Nov 2009 16:44:32 GMT

Sure there is a known good tape loaded?

Re: Command to find the tapes status in HPUX 10.2

Jacques Carriere — Mon, 16 Nov 2009 19:23:02 GMT

try
dd if=anyfile of=/dev/rdsk/...

to see if you can write to the device. Do a man on the dd command.

Jacques

Re: Command to find the tapes status in HPUX 10.2

Sp4admin — Mon, 16 Nov 2009 20:37:07 GMT

Does the tape drive show up in the ioscan -fnC tape? If the device isn't claimed it could be a bad tape drive. Some time the tape may not be compatible with the media.

Sp,

Re: Command to find the tapes status in HPUX 10.2

OldSchool — Mon, 16 Nov 2009 20:56:59 GMT

"# mt -t /dev/rmt/0m rew
/dev/rmt/0m: No such device or address
# mt -t /dev/rmt/0mb rew
/dev/rmt/0mb: No such device or address
#"

No...you must specify a non-rewind device, as in /dev/rmt/0mnb, as previously noted. I no longer recall what happens (on 10.20) when you give "mt" the wrong type of device.

"I am getting the following output and I am not able to run Ignite Backup. "

gee, the error you're getting might be of use.....

So, basically, you're trying to diagnose a non-functioning tape drive?

Has this drive ever worked?

Has the drive been replaced / moved lately?

SCSI address changed?

Can you "tar" anything to /dev/rmt/0m using a new tape?

Will it read a known good tape?

Anything in syslog?

Is the power indicator light on the drive lit?