#
# Bacula interface to mtx autoloader
#
-# mtx-changer "changer-device" "command" "slot"
+# $Id$
#
-# Modified for Adic Scalar 24 with one LTO drive by
-# M. Ludovic Strappozon
+# If you set in your Device resource
#
-case "$2" in
+# Changer Command = "path-to-this-script/mtx-changer" %c %o %S %a %d
+# you will have the following input to this script:
+#
+# mtx-changer "changer-device" "command" "slot" "archive-device" "drive-index"
+# $1 $2 $3 $4 $5
+#
+# for example:
+#
+# mtx-changer /dev/sg0 load 1 /dev/nst0 0 (on a Linux system)
+#
+# If you need to an offline, refer to the drive as $4
+# e.g. mt -f $4 offline
+#
+# Many changers need an offline after the unload. Also many
+# changers need a sleep 60 after the mtx load.
+#
+# N.B. If you change the script, take care to return either
+# the mtx exit code or a 0. If the script exits with a non-zero
+# exit code, Bacula will assume the request failed.
+#
+
+MTX=/usr/sbin/mtx
+
+if test $# -lt 2 ; then
+ echo "usage: mtx-changer ctl-device command slot archive-device drive"
+ echo " Insufficient number of arguments arguments given."
+ echo " Mimimum usage is first two arguments ..."
+ exit 1
+fi
+
+# Setup arguments
+ctl=$1
+cmd="$2"
+slot=$3
+device=$4
+# If drive not given, default to 0
+if test $# = 5 ; then
+ drive=$5
+else
+ drive=0
+fi
+
+${MTX} -f $1 inventory
+
+#
+# Check for special cases where only 2 arguments are needed,
+# all others are a minimum of 3
+case $cmd in
+ loaded)
+ ;;
+ unload)
+ ;;
+ list)
+ ;;
+ slots)
+ ;;
+ *)
+ if test $# -lt 3; then
+ echo "usage: mtx-changer ctl-device command slot archive-device drive"
+ echo " Insufficient number of arguments arguments given."
+ echo " Mimimum usage is first three arguments ..."
+ exit 1
+ fi
+ ;;
+esac
+
+
+case $cmd in
unload)
-# echo "Doing mtx -f $1 $2"
- mtx -f $1 $2
+# echo "Doing mtx -f $ctl unload $slot $drive"
+#
+# enable the following line if you need to eject the cartridge
+# mt -f $device offline
+ if test x$slot = x; then
+ ${MTX} -f $ctl unload
+ else
+ ${MTX} -f $ctl unload $slot $drive
+ fi
;;
load)
-# echo "Doing mtx -f $1 $2 $3"
- mtx -f $1 $2 $3
- sleep 20
+# echo "Doing mtx -f $ctl load $slot $drive"
+ ${MTX} -f $ctl load $slot $drive
+ rtn=$?
+#
+# Increase the sleep time if you have a slow device
+ sleep 15
+ exit $rtn
;;
- list)
+ list)
# echo "Requested list"
-# mtx -f $1 status | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3}" | sed "s/:.*$/ /g" | tr -d "[\r\n]"
- mtx -f $1 status | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
+ ${MTX} -f $ctl status | grep " *Storage Element [0-9]*:.*Full" | awk '{print $3 $4}' | sed "s/Full *\(:VolumeTag=\)*//"
;;
loaded)
-# echo "Request loaded"
- mtx -f $1 status >/tmp/mtx.$$
- cat /tmp/mtx.$$ | grep "^Data Transfer Element 0:Full" | awk "{print \$7}"
- cat /tmp/mtx.$$ | grep "^Data Transfer Element 0:Empty" | awk "{print 0}"
+ ${MTX} -f $ctl status >/tmp/mtx.$$
+ rtn=$?
+ cat /tmp/mtx.$$ | grep "^Data Transfer Element $drive:Full" | awk '{print $7}'
+ cat /tmp/mtx.$$ | grep "^Data Transfer Element $drive:Empty" | awk '{print 0}'
rm -f /tmp/mtx.$$
+ exit $rtn
;;
slots)
# echo "Request slots"
- mtx -f $1 status | grep " *Storage Changer" | awk "{print \$5}"
+ ${MTX} -f $ctl status | grep " *Storage Changer" | awk '{print $5}'
;;
esac