tape problem

[matteo_4]

Hi all,
i have a dat dds2 model external on my hp b180l it was ok in the past before today.

I try to backup a file into it:
tar -cvf /dev/rmt/0m myjob

but
reply to me
tar cannot open device /dev/rmt/0m

also mt -t /dev/rmt/0mnb rew
reply to me device busy

into the dat there is a new dds2 tape.

and also ioscan show me the tape CLAIMED.

Please help me.

[David Burgess · Accepted solution]

Just a thought. Have you cleaned the heads recently? Is the tape write protected? Will another tape work?

Regards,

Dave.

[G. Vrijhoeven]

Hi,

I addition to david, could it be that the device is used by an other process?
check with ( man ) fuser.

fuser -cu /dev/rmt/0m

Gideon

[Pete Randall]

It definitely sounds like another process already owns the drive. Try using fuser to see if you can locate the process. Failing that, lsof is the perfect tool for this sort of situation. Here's a link for the 64 bit 11i version:

http://the-other.wiretapped.net/security/host-security/lsof/binaries/hpux/B.11.11/

and the 11.0 64 bit version:

http://the-other.wiretapped.net/security/host-security/lsof/binaries/hpux/B.11.00/vxfs/64/9000_785/


Pete

[Elmar P. Kolkman]

Sorry to disagree, but fuser -c works on mountpoints only, not on tape devices.
fuser -u /dev/rmt/0mnb
should do the trick.

[Mark Grant]

You could always try "mt -f /dev/rmt/0mn rel" or "st -f /dev/rmt/0mn -r" to attempt to release the device. It sounds like a SCSI lock.

[matteo_4]

hi all
thank you very much there was a process that lock my tape.