topic Re: check the dat tape or dlt tape in Operating System - HP-UX

check the dat tape or dlt tape

matteo casarino — Mon, 04 Feb 2002 14:22:42 GMT

Hi to all,
I need to check if a DAT TAPE or DLT TAPE is ready to write o read.
Is there a ux command that returned me the state of the tape ???

Thank you
Matteo

Re: check the dat tape or dlt tape

Sanjay_6 — Mon, 04 Feb 2002 14:25:45 GMT

hi,

Try,

# mt -f /dev/rmt/0m status

Hope this helps.

Regds

Re: check the dat tape or dlt tape

Rodney Hills — Mon, 04 Feb 2002 14:27:07 GMT

I use shell code like the following-

if /usr/bin/mt -t /dev/rmt/0m rew 2>/dev/null ; then
echo "tape is mounted ..."
else
echo "tape is > > NOT < < mounted ..."
exit
fi

-- Rod Hills

Re: check the dat tape or dlt tape

matteo casarino — Mon, 04 Feb 2002 14:34:56 GMT

mt -f /dev/rmt/0m status don't work

Re: check the dat tape or dlt tape

Uday_S_Ankolekar — Mon, 04 Feb 2002 14:49:01 GMT

Hi,

Try instead

mt -f /dem/rnt/0mnb status

If -f doesnot work then use -t. Look for the man pages of mt for more information on -f -t.

Some of my server doesn't support -f but works with -t.

Goodluck,
-USA..

Re: check the dat tape or dlt tape

matteo casarino — Mon, 04 Feb 2002 14:52:42 GMT

mt -t /dev/rmt/1mnb status don't work

Re: check the dat tape or dlt tape

Sanjay_6 — Mon, 04 Feb 2002 14:56:18 GMT

Hi,

do a "ioscan -fnC tape" and check the device file for the tape drive and then use it with the mt command.

Hope this helps.

Regds

Re: check the dat tape or dlt tape

Steve Steel — Mon, 04 Feb 2002 14:56:30 GMT

Hi

HP does not support the status option.

The rewind is the best supported solution

Steve Steel

Re: check the dat tape or dlt tape

Carlos Fernandez Riera — Mon, 04 Feb 2002 15:20:41 GMT

direct way ( with tape overwrite):

echo " testing write tape ..." | dd of=/dev/rmt/Xmn

if [ $? -ne 0 ] ; then

echo " tape is write protected .."

else

echo " tape is overwrite ..... :(("
fi

C code way :

#incluse
#include
main ()
{

int dat;

dat=open ("/dev/rmt/0mn", O_RDWR);

if ( dat == -1 )
{
printf (" no tape or tape protected\n");
exit (1);
}

}

Re: check the dat tape or dlt tape

Uday_S_Ankolekar — Mon, 04 Feb 2002 15:31:59 GMT

Hi,

Try

ioscan -fnKc tape
This would display results similar to this:
Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
tape 0 1/4/0/0.0.0 stape CLAIMED DEVICE QUANTUM DLT7000
/dev/rmt/0m /dev/rmt/0mnb /dev/rmt/c16t0d0BESTn
/dev/rmt/0mb /dev/rmt/c16t0d0BEST /dev/rmt/c16t0d0BESTnb
/dev/rmt/0mn /dev/rmt/c16t0d0BESTb

Then run mt -f /dev/rmt/

Re: check the dat tape or dlt tape

Uday_S_Ankolekar — Mon, 04 Feb 2002 15:32:48 GMT

oops...

It should be

ioscan -fnkC tape

Re: check the dat tape or dlt tape

Patrick Wallek — Mon, 04 Feb 2002 15:42:47 GMT

HP does support the 'status' option of the mt command, but only at HP-UX 11.x, I believe.

Also, the '-f ' option is only supported at 11.x, 10.x used the '-t ' option.

So, if you are at HP-UX 10.20 do something like:

# mt -t /dev/rmt/?m rew

where the ? is the appropriate number for your tape drive.

At 11.0 you can do:

# mt -f /dev/rmt/?m status

again, where ? is the appropriate number for you tape drive.

Re: check the dat tape or dlt tape

matteo casarino — Mon, 04 Feb 2002 15:56:53 GMT

thank you all
i resolved my problem with a csh script.