# Changer Command = "path-to-this-script/mtx-changer" %c %o %S %a %d
# you will have the following input to this script:
#
+# So Bacula will always call with all the following arguments, even though
+# in come cases, not all are used.
+#
# 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)
+#
+# will request to load the first cartidge into drive 0, where
+# the SCSI control channel is /dev/sg0, and the read/write device
+# is /dev/nst0.
#
# If you need to an offline, refer to the drive as $4
# e.g. mt -f $4 offline
MTX=@MTX@
-case "$2" in
+#
+# log whats done
+#
+# to turn on logging, uncomment the following line
+#touch @working_dir@/mtx.log
+debug() {
+ dbgfile="@working_dir@/mtx.log"
+ if test -e $dbgfile; then
+ echo "`date +\"%Y%m%d-%H:%M:%S\"` $*" >> $dbgfile
+ fi
+}
+
+
+#
+# Create a temporary file
+#
+make_temp_file() {
+ TMPFILE=`mktemp -t mtx.XXXXXXXXXX`
+ if test x${TMPFILE} = x; then
+ TMPFILE="@working_dir@/mtx.$$"
+ if test -f ${TMPFILE}; then
+ echo "Temp file security problem on: ${TMPFILE}"
+ exit 1
+ fi
+ fi
+}
+
+#
+# The purpose of this function to wait a maximum
+# time for the drive. It will
+# return as soon as the drive is ready, or after
+# waiting a maximum of 300 seconds.
+# Note, this is very system dependent, so if you are
+# not running on Linux, you will probably need to
+# re-write it, or at least change the grep target.
+#
+wait_for_drive() {
+ i=0
+ while [ $i -le 300 ]; do # Wait max 300 seconds
+ if mt -f $1 status | grep ONLINE >/dev/null 2>&1; then
+ break
+ fi
+# debug "Device $1 - not ready, retrying..."
+ sleep 1
+ i=`expr $i + 1`
+ done
+}
+
+# check parameter count on commandline
+#
+check_parm_count() {
+ pCount=$1
+ pCountNeed=$2
+ if test $pCount -lt $pCountNeed; then
+ echo "usage: mtx-changer ctl-device command [slot archive-device drive-index]"
+ echo " Insufficient number of arguments arguments given."
+ if test $pCount -lt 2; then
+ echo " Mimimum usage is first two arguments ..."
+ else
+ echo " Command expected $pCountNeed arguments"
+ fi
+ exit 1
+ fi
+}
+
+# Check for special cases where only 2 arguments are needed,
+# all others are a minimum of 5
+#
+case $2 in
+ list)
+ check_parm_count $# 2
+ ;;
+ slots)
+ check_parm_count $# 2
+ ;;
+ *)
+ check_parm_count $# 5
+ ;;
+esac
+
+
+# Setup arguments
+ctl=$1
+cmd="$2"
+slot=$3
+device=$4
+drive=$5
+
+# debug "Parms: $ctl $cmd $slot $device $drive"
+
+case $cmd in
unload)
-# echo "Doing mtx -f $1 unload $3 $5"
+# debug "Doing mtx -f $ctl unload $slot $drive"
#
# enable the following line if you need to eject the cartridge
-# mt -f $4 offline
- ${MTX} -f $1 unload $3 $5
+# mt -f $device offline
+# sleep 10
+ ${MTX} -f $ctl unload $slot $drive
;;
load)
-# echo "Doing mtx -f $1 load $3 $5"
- ${MTX} -f $1 load $3 $5
+# debug "Doing mtx -f $ctl load $slot $drive"
+ ${MTX} -f $ctl load $slot $drive
rtn=$?
#
# Increase the sleep time if you have a slow device
+# or remove the sleep and add the following:
+# wait_for_drive $device
sleep 15
exit $rtn
;;
list)
-# echo "Requested list"
- ${MTX} -f $1 status | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
+# debug "Doing mtx -f $ctl -- to list volumes"
+ make_temp_file
+# Enable the following if you are using barcodes and need an inventory
+# $(MTX) -f $ctl inventory
+ ${MTX} -f $ctl status >${TMPFILE}
+ rtn=$?
+ cat ${TMPFILE} | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
+ cat ${TMPFILE} | grep "^Data Transfer Element [0-9]*:Full (Storage Element [0-9]" | awk '{printf "%s:%s\n",$7,$10}'
+ rm -f ${TMPFILE} 2>&1 >/dev/null
+#
+# If you have a VXA PacketLoader and the above does not work, try
+# turning it off and enabling the following line.
+# ${MTX} -f $ctl status | grep " *Storage Element [0-9]*:.*Full" | sed "s/*Storage Element //" | sed "s/Full :VolumeTag=//"
+ exit $rtn
;;
loaded)
- ${MTX} -f $1 status >/tmp/mtx.$$
+# debug "Doing mtx -f $ctl $drive -- to find what is loaded"
+ make_temp_file
+ ${MTX} -f $ctl status >${TMPFILE}
rtn=$?
- cat /tmp/mtx.$$ | grep "^Data Transfer Element $5:Full" | awk "{print \$7}"
- cat /tmp/mtx.$$ | grep "^Data Transfer Element $5:Empty" | awk "{print 0}"
- rm -f /tmp/mtx.$$
+ cat ${TMPFILE} | grep "^Data Transfer Element $drive:Full" | awk "{print \$7}"
+ cat ${TMPFILE} | grep "^Data Transfer Element $drive:Empty" | awk "{print 0}"
+ rm -f ${TMPFILE} 2>&1 >/dev/null
exit $rtn
;;
slots)
-# echo "Request slots"
- ${MTX} -f $1 status | grep " *Storage Changer" | awk "{print \$5}"
+# debug "Doing mtx -f $ctl -- to get count of slots"
+ ${MTX} -f $ctl status | grep " *Storage Changer" | awk "{print \$5}"
;;
esac
projects / bacula / bacula / blobdiff