#!/bin/sh
#
# The use of this script for Totally Automating Tape usage is
# described in the Tips chapter of the manual.
#
# Bacula interface to mtx autoloader
#
# Created OCT/31/03 by Alexander Kuehn, derived from Ludwig Jaffe's script
#
# Works with the HP C1537A L708 DDS3
#
#set -x
# these are the labels of the tapes in each virtual slot, not the slots!
labels="PSE-0001 PSE-0002 PSE-0003 PSE-0004 PSE-0005 PSE-0006 PSE-0007 PSE-0008 PSE-0009 PSE-0010 PSE-0011 PSE-0012"
# who to send a mail to?
recipient=root@localhost
logfile=/var/log/mtx.log
# Delay in seconds how often to check whether a new tape has been inserted
TAPEDELAY=10 # the default is every 10 seconds
echo `date` ":" $@ >>$logfile
# change this if mt is not in the path (use different quotes!)
mt=`which mt`
grep=`which grep`
#
# how to run the console application?
console="/usr/local/sbin/console -c /usr/local/etc/console.conf"
command="$1"
#TAPEDRIVE0 holds the device/name of your 1st and only drive (Bacula supports only 1 drive currently)
#Read TAPEDRIVE from command line parameters
if [ -z "$2" ] ; then
TAPEDRIVE0=/dev/nsa0
else
TAPEDRIVE0=$2
fi
#Read slot from command line parameters
if [ -z "$3" ] ; then
slot=`expr 1`
else
slot=`expr $3`
fi
if [ -z "$command" ] ; then
echo ""
echo "The mtx-changer script for Bacula"
echo "---------------------------------"
echo ""
echo "usage: mtx-changer <command> <devicename of tapedrive> [slot]"
echo " mtx-changer"
echo ""
echo "Valid commands:"
echo ""
echo "unload Unloads a tape into the slot"
echo " from where it was loaded."
echo "load <slot> Loads a tape from the slot <slot>"
echo "list Lists full storage slots"
echo "loaded Gives slot from where the tape was loaded."
echo " 0 means the tape drive is empty."
echo "slots Gives Number of avialable slots."
echo "volumes List avialable slots and the label of the."
echo " tape in it (slot:volume)"
echo "Example:"
echo " mtx-changer load /dev/nst0 1 loads a tape from slot1"
echo " mtx-changer %a %o %S "
echo ""
exit 0
fi
case "$command" in
unload)
# At first do mt -f /dev/st0 offline to unload the tape
#
# Check if you want to fool me
echo "unmount"|$console >/dev/null 2>/dev/null
echo "mtx-changer: Checking if drive is loaded before we unload. Request unload" >>$logfile
if $mt -f $TAPEDRIVE0 status >/dev/null 2>/dev/null ; then # mt says status ok
echo "mtx-changer: Doing mt -f $TAPEDRIVE0 rewoffl to rewind and unload the tape!" >>$logfile
$mt -f $TAPEDRIVE0 rewoffl
else
echo "mtx-changer: *** Don't fool me! *** The Drive $TAPEDRIVE0 is empty." >>$logfile
fi
exit 0
;;
load)
#Let's check if drive is loaded before we load it
echo "mtx-changer: Checking if drive is loaded before we load. I Request loaded" >>$logfile
LOADEDVOL=`echo "status Storage"|$console|$grep $TAPEDRIVE0|grep ^Device|grep -v "not open."|grep -v "ERR="|grep -v "no Bacula volume is mounted"|sed -e s/^.*Volume\ //|cut -d\" -f2`
# if [ -z "$LOADEDVOL" ] ; then # this is wrong, becaus Bacula would try to use the tape if we mount it!
# LOADEDVOL=`echo "mount"|$console|$grep $TAPEDRIVE0|grep Device|grep -v "not open."|grep -v "ERR="|sed -e s/^.*Volume\ //|cut -d\" -f2`
# if [ -z "$LOADEDVOL" ] ; then
# echo "mtx-changer: The Drive $TAPEDRIVE0 is empty." >>$logfile
# else # restore state?
# if [ $LOADEDVOL = $3 ] ; then # requested Volume mounted -> exit
# echo "mtx-changer: *** Don't fool me! *** Tape $LOADEDVOL is already in drive $TAPEDRIVE0!" >>$logfile
# exit
# else # oops, wrong volume
# echo "unmount"|$console >/dev/null 2>/dev/null
# fi
# fi
# fi
if [ -z "$LOADEDVOL" ] ; then
echo "unmount"|$console >/dev/null 2>/dev/null
LOADEDVOL=0
else
#Check if you want to fool me
if [ $LOADEDVOL = $3 ] ; then
echo "mtx-changer: *** Don't fool me! *** Tape $LOADEDVOL is already in drive $TAPEDRIVE0!" >>$logfile
exit
fi
echo "mtx-changer: The Drive $TAPEDRIVE0 is loaded with the tape $LOADEDVOL" >>$logfile
echo "mtx-changer: Unmounting..." >>$logfile
echo "unmount"|$console >/dev/null 2>/dev/null
fi
echo "mtx-changer: Unloading..." >>$logfile
echo "mtx-changer: Doing mt -f $TAPEDRIVE0 rewoffl to rewind and unload the tape!" >>$logfile
mt -f $TAPEDRIVE0 rewoffl 2>/dev/null
#Now we can load the drive as desired
echo "mtx-changer: Doing mtx -f $1 $2 $3" >>$logfile
# extract label for the mail
count=`expr 1`
for label in $labels ; do
if [ $slot -eq $count ] ; then volume=$label ; fi
count=`expr $count + 1`
done
mail -s "Bacula needs volume $volume." $recipient <<END_OF_DATA
Please insert volume $volume from slot $slot into $TAPEDRIVE0 .
Kind regards,
Bacula.
END_OF_DATA
sleep 15
$mt status >/dev/null 2>/dev/null
while [ $? -ne 0 ] ; do
sleep $TAPEDELAY
$mt status >/dev/null 2>/dev/null
done
mail -s "Bacula says thank you." $recipient <<END_OF_DATA
Thank you for inserting the new tape! (I requested volume $volume from slot $slot.)
Kind regards,
Bacula.
END_OF_DATA
echo "Successfully loaded a tape into drive $TAPEDRIVE0 (requested $volume from slot $slot)." >>$logfile
echo "Loading finished." ; >>$logfile
echo "$slot"
exit 0
;;
list)
echo "mtx-changer: Requested list" >>$logfile
LOADEDVOL=`echo "status Storage"|$console|$grep $TAPEDRIVE0|grep ^Device|grep -v "not open."|grep -v "ERR="|grep -v "no Bacula volume is mounted"|sed -e s/^.*Volume\ //|cut -d\" -f2`
if [ -z $LOADEDVOL ] ; then # try mounting
LOADEDVOL=`echo "mount"|$console|$grep $TAPEDRIVE0|grep Device|grep -v "not open."|grep -v "ERR="|sed -e s/^.*Volume\ //|cut -d\" -f2`
if [ -z $LOADEDVOL ] ; then # no luck
LOADEDVOL="_no_tape"
else # restore state
echo "unmount"|$console >/dev/null 2>/dev/null
fi
fi
count=`expr 1`
for label in $labels ; do
if [ "$label" != "$LOADEDVOL" ] ; then
printf "$count "
fi
count=`expr $count + 1`
done
printf "\n"
;;
loaded)
echo "mtx-changer: Request loaded, dev $TAPEDRIVE0" >>$logfile
LOADEDVOL=`echo "status Storage"|$console|$grep $TAPEDRIVE0|grep ^Device|grep -v "not open."|grep -v "ERR="|grep -v "no Bacula volume is mounted"|sed -e s/^.*Volume\ //|cut -d\" -f2`
if [ -z $LOADEDVOL ] ; then
LOADEDVOL=`echo "mount"|$console|$grep $TAPEDRIVE0|grep Device|grep -v "not open."|grep -v "ERR="|grep -v "no Bacula volume is mounted"|sed -e s/^.*Volume\ //|cut -d\" -f2`
if [ -z "$LOADEDVOL" ] ; then # no luck
echo "$TAPEDRIVE0 not mounted!" >>$logfile
else # restore state
echo "unmount"|$console >/dev/null 2>/dev/null
fi
fi
if [ -z "$LOADEDVOL" ] ; then
LOADEDVOL="_no_tape" >>$logfile
echo "0"
else
count=`expr 1`
for label in $labels ; do
if [ $LOADEDVOL = $label ] ; then echo $count ; fi
count=`expr $count + 1`
done
fi
exit 0
;;
slots)
echo "mtx-changer: Request slots" >>$logfile
count=`expr 0`
for label in $labels ; do
count=`expr $count + 1`
done
echo $count
;;
volumes)
echo "mtx-changer: Request volumes" >>$logfile
count=`expr 1`
for label in $labels ; do
printf "$count:$label "
count=`expr $count + 1`
done
printf "\n"
;;
esac
