topic Re: DDS not mounting in Operating System - HP-UX

DDS not mounting

mvr — Wed, 28 Jan 2009 20:20:12 GMT

Hi all, I have a problem with DDS tape on HP-UX11i. Tape should be mounted (as far as I know) at /dev/rmt/0mn
However, when I run command
"mt -f /dev/rmt/0mn" I am getting an error:
"on tape open: No such device or address"
I am using this tape for backing up Data Protector database.

Any suggestion?

Miro

Re: DDS not mounting

Rita C Workman — Wed, 28 Jan 2009 20:24:55 GMT

First thing I might do is run:

ioscan -fnC tape > ioscan.tape.dds

Check and make sure it shows the hardware as claimed first...

Rgrds,
Rita

Re: DDS not mounting

Rita C Workman — Wed, 28 Jan 2009 20:28:23 GMT

Here's another thought, if your just trying to backup essentials of Data Protector - and your drive shows up in ioscan.

Why not just run:

tar -cvf /dev/rmt/0mn /var/opt/omni /etc/opt/omni

Do you really need to manipulate the tape, or just create it...

I might rewind it first with a:
mt -f /dev/rmt/0mn rew

...but that's about it.

Just a thought,
Rita

Re: DDS not mounting

sujit kumar singh — Wed, 28 Jan 2009 20:53:26 GMT

Hi

#ioscan -fnCtape

shall show if the /dev/rmt/0mn has changed or somehow tape drive instance might have changed and you might see a new tape drive altogether as /dev/rmt/1mn !!

Also that shall show if /dev/rmt/0mn has anything as NO_HW being represented.

the other thing is that make sure that a media is loaded in the tape.

if not load a media and

#mt -t /dev/rmt/0mn rewind
#mt -t /dev/rmt/0mn status.

Regards
Sujit

Re: DDS not mounting

mvr — Tue, 24 Feb 2009 14:42:44 GMT

There was a DNS change problem. After making sure that resolution was correct, tape start working.