[Networker] Virtual tapes get stuck in virtual tape drives

Running NW 7.5.2 with Data Domain DD880 in VTL mode. It has been suggested by 
DD that we need to relabel tapes each day via a script in order to keep the 
data stored on the DD880 trimmed down for replication, and I will agree thats 
probably a good idea. I have a script written that works pretty well. The 
problem comes in if that script is running against a pool when a backup kicks 
off that wants to use the same pool. Some of the relabel commands may fail, and 
then that tape may be "stuck" in that drive, and that drive can't be used until 
I can get that tape out. The only way I get the tape out is to go to the DD880 
and export those tapes, then import them back into the library. Here's a sample 
of 2 that got stuck today because oracle backups kicked off in the middle of 
this process: 

OR0073 from oracle8daycdl on JB DD880456-1 will be re-labeled
setting verbosity level to `3'
Info: Preparing to load volume `OR0073' from slot 470 into device 
`rd=nt2legatoj4.emn.com:\\.\Tape14'.
Info: Loading volume `OR0073' from slot `470' into device 
`rd=nt2legatoj4.emn.com:\\.\Tape14'.
Info: Load sleep for 5 seconds.
Info: Performing operation `Verify label' on device 
`rd=nt2legatoj4.emn.com:\\.\Tape14'.
Info: Operation `Verify label' in progress on device 
`rd=nt2legatoj4.emn.com:\\.\Tape14'
Error: Task `OP_LABEL' timed out.
39077:nsrjb: error, Jukebox command terminated with errors.

OR0259 from oracle8daycdl on JB DD880456-1 will be re-labeled
setting verbosity level to `3'
Info: Preparing to load volume `OR0259' from slot 911 into device 
`rd=nt2legatoj4.emn.com:\\.\Tape15'.
Info: Loading volume `OR0259' from slot `911' into device 
`rd=nt2legatoj4.emn.com:\\.\Tape15'.
Info: Load sleep for 5 seconds.
Info: Performing operation `Verify label' on device 
`rd=nt2legatoj4.emn.com:\\.\Tape15'.
Info: Operation `Verify label' in progress on device 
`rd=nt2legatoj4.emn.com:\\.\Tape15'
Error: Task `OP_LABEL' timed out.
39077:nsrjb: error, Jukebox command terminated with errors.

My question has 2 parts I guess, is there a problem with my script? And is 
there maybe a better way to do this? Here's my script:

#!/bin/ksh
#################################################################
#
# Program Name: recycle_tapes_J1.sh
# Author: R Mumford
# Date:   24 Jan 2009
#
#

LOCATION=DD880456-1

echo " "
echo $LOCATION
echo " "

echo " "        > recycled_tapes_NT2LEGATOJ1.txt
echo $LOCATION  >> recycled_tapes_NT2LEGATOJ1.txt
echo " "        >> recycled_tapes_NT2LEGATOJ1.txt


#First, get a list of all tapes marked recycled and output to a file we will 
mail out.

mminfo -q "!inuse,volrecycle,location=$LOCATION" -r "volume, pool, volretent, 
location" >> recycled_tapes_NT2LEGATOJ1.txt
echo " "        >> recycled_tapes_NT2LEGATOJ1.txt

#MAINLOOP - loop thru pools - add to list if new pools added

for POOL in Bootstrap eastman28 edmdevclone enp8day mig ndmp oracle28day 
oracle8daycdl VMS

do

#WORKINGLOOP - delete and relable volumes

        mminfo -q "volrecycle,pool=$POOL,location=$LOCATION" -r volume | while 
read VOLUME

        do

        echo "$VOLUME from $POOL on JB $LOCATION will be re-labeled"
        echo "$VOLUME from $POOL on JB $LOCATION will be re-labeled" >> 
recycled_tapes_NT2LEGATOJ1.txt

        nsrjb -Yvvv -j $LOCATION -R -b $POOL -L $VOLUME

        done
done

#####


Thanks

Robert D Mumford

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