3 # Bacula interface to mtx autoloader
7 # If you set in your Device resource
9 # Changer Command = "path-to-this-script/mtx-changer %c %o %S %a %d"
10 # you will have the following input to this script:
12 # So Bacula will always call with all the following arguments, even though
13 # in come cases, not all are used.
15 # mtx-changer "changer-device" "command" "slot" "archive-device" "drive-index"
20 # mtx-changer /dev/sg0 load 1 /dev/nst0 0 (on a Linux system)
22 # will request to load the first cartidge into drive 0, where
23 # the SCSI control channel is /dev/sg0, and the read/write device
26 # If you need to an offline, refer to the drive as $4
27 # e.g. mt -f $4 offline
29 # Many changers need an offline after the unload. Also many
30 # changers need a sleep 60 after the mtx load.
32 # N.B. If you change the script, take care to return either
33 # the mtx exit code or a 0. If the script exits with a non-zero
34 # exit code, Bacula will assume the request failed.
40 # SunOS No Additional Sense
41 # FreeBSD Current Driver State: at rest.
47 ready="No Additional Sense"
50 ready="Current Driver State: at rest."
60 # to turn on logging, uncomment the following line
61 #touch @working_dir@/mtx.log
63 dbgfile="@working_dir@/mtx.log"
65 if test -f $dbgfile; then
66 echo "`date +\"%Y%m%d-%H:%M:%S\"` $*" >> $dbgfile
72 # Create a temporary file
75 TMPFILE=`mktemp @working_dir@/mtx.XXXXXXXXXX`
76 if test x${TMPFILE} = x; then
77 TMPFILE="@working_dir@/mtx.$$"
78 if test -f ${TMPFILE}; then
79 echo "Temp file security problem on: ${TMPFILE}"
86 # The purpose of this function to wait a maximum
87 # time for the drive. It will
88 # return as soon as the drive is ready, or after
89 # waiting a maximum of 300 seconds.
90 # Note, this is very system dependent, so if you are
91 # not running on Linux, you will probably need to
92 # re-write it, or at least change the grep target.
93 # We've attempted to get the appropriate OS grep targets
94 # in the code at the top of this script.
98 while [ $i -le 300 ]; do # Wait max 300 seconds
99 if mt -f $1 status | grep ${ready} >/dev/null 2>&1; then
102 debug "Device $1 - not ready, retrying..."
108 # check parameter count on commandline
113 if test $pCount -lt $pCountNeed; then
114 echo "usage: mtx-changer ctl-device command [slot archive-device drive-index]"
115 echo " Insufficient number of arguments arguments given."
116 if test $pCount -lt 2; then
117 echo " Mimimum usage is first two arguments ..."
119 echo " Command expected $pCountNeed arguments"
125 # Check for special cases where only 2 arguments are needed,
126 # all others are a minimum of 5
130 check_parm_count $# 2
133 check_parm_count $# 2
136 check_parm_count $# 5
148 debug "Parms: $ctl $cmd $slot $device $drive"
152 debug "Doing mtx -f $ctl unload $slot $drive"
154 # enable the following line if you need to eject the cartridge
155 # mt -f $device offline
157 ${MTX} -f $ctl unload $slot $drive
161 debug "Doing mtx -f $ctl load $slot $drive"
162 ${MTX} -f $ctl load $slot $drive
165 # Increase the sleep time if you have a slow device
166 # or remove the sleep and add the following:
167 # wait_for_drive $device
173 debug "Doing mtx -f $ctl -- to list volumes"
175 # Enable the following if you are using barcodes and need an inventory
176 # ${MTX} -f $ctl inventory
177 ${MTX} -f $ctl status >${TMPFILE}
179 cat ${TMPFILE} | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
180 cat ${TMPFILE} | grep "^Data Transfer Element [0-9]*:Full (Storage Element [0-9]" | awk '{printf "%s:%s\n",$7,$10}'
181 rm -f ${TMPFILE} >/dev/null 2>&1
183 # If you have a VXA PacketLoader and the above does not work, try
184 # turning it off and enabling the following line.
185 # ${MTX} -f $ctl status | grep " *Storage Element [0-9]*:.*Full" | sed "s/*Storage Element //" | sed "s/Full :VolumeTag=//"
190 debug "Doing mtx -f $ctl $drive -- to find what is loaded"
192 ${MTX} -f $ctl status >${TMPFILE}
194 cat ${TMPFILE} | grep "^Data Transfer Element $drive:Full" | awk "{print \$7}"
195 cat ${TMPFILE} | grep "^Data Transfer Element $drive:Empty" | awk "{print 0}"
196 rm -f ${TMPFILE} >/dev/null 2>&1
201 debug "Doing mtx -f $ctl -- to get count of slots"
202 ${MTX} -f $ctl status | grep " *Storage Changer" | awk "{print \$5}"