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
28 # unload unload a given slot
29 # load load a given slot
30 # loaded which slot is loaded?
31 # list list Volume names (requires barcode reader)
32 # slots how many slots total?
34 # Slots are numbered from 1 ...
35 # Drives are numbered from 0 ...
38 # If you need to an offline, refer to the drive as $4
39 # e.g. mt -f $4 offline
41 # Many changers need an offline after the unload. Also many
42 # changers need a sleep 60 after the mtx load.
44 # N.B. If you change the script, take care to return either
45 # the mtx exit code or a 0. If the script exits with a non-zero
46 # exit code, Bacula will assume the request failed.
52 # SunOS No Additional Sense
53 # FreeBSD Current Driver State: at rest.
55 # Note Debian has a different mt than the standard Linux version.
56 # When no tape is in the drive it waits 2 minutes.
57 # When a tape is in the drive, it prints user unfriendly output.
63 ready="No Additional Sense"
66 ready="Current Driver State: at rest."
69 if test -e /etc/debian_version ; then
80 # to turn on logging, uncomment the following line
81 #touch @working_dir@/mtx.log
83 dbgfile="@working_dir@/mtx.log"
85 if test -f $dbgfile; then
86 echo "`date +\"%Y%m%d-%H:%M:%S\"` $*" >> $dbgfile
92 # Create a temporary file
95 TMPFILE=`mktemp @working_dir@/mtx.XXXXXXXXXX`
96 if test x${TMPFILE} = x; then
97 TMPFILE="@working_dir@/mtx.$$"
98 if test -f ${TMPFILE}; then
99 echo "Temp file security problem on: ${TMPFILE}"
106 # The purpose of this function to wait a maximum
107 # time for the drive. It will
108 # return as soon as the drive is ready, or after
109 # waiting a maximum of 300 seconds.
110 # Note, this is very system dependent, so if you are
111 # not running on Linux, you will probably need to
112 # re-write it, or at least change the grep target.
113 # We've attempted to get the appropriate OS grep targets
114 # in the code at the top of this script.
118 while [ $i -le 300 ]; do # Wait max 300 seconds
119 if mt -f $1 status 2>&1 | grep "${ready}" >/dev/null 2>&1; then
122 debug "Device $1 - not ready, retrying..."
128 # check parameter count on commandline
133 if test $pCount -lt $pCountNeed; then
134 echo "usage: mtx-changer ctl-device command [slot archive-device drive-index]"
135 echo " Insufficient number of arguments given."
136 if test $pCount -lt 2; then
137 echo " Mimimum usage is first two arguments ..."
139 echo " Command expected $pCountNeed arguments"
145 # Check for special cases where only 2 arguments are needed,
146 # all others are a minimum of 5
150 check_parm_count $# 2
153 check_parm_count $# 2
156 check_parm_count $# 5
168 debug "Parms: $ctl $cmd $slot $device $drive"
172 debug "Doing mtx -f $ctl unload $slot $drive"
174 # enable the following line if you need to eject the cartridge
175 # mt -f $device offline
177 ${MTX} -f $ctl unload $slot $drive
181 debug "Doing mtx -f $ctl load $slot $drive"
182 ${MTX} -f $ctl load $slot $drive
185 # Increase the sleep time if you have a slow device
186 # or remove the sleep and add the following:
188 wait_for_drive $device
193 debug "Doing mtx -f $ctl -- to list volumes"
195 # Enable the following if you are using barcodes and need an inventory
196 # ${MTX} -f $ctl inventory
197 ${MTX} -f $ctl status >${TMPFILE}
199 cat ${TMPFILE} | grep " Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
201 # If you have a VXA PacketLoader and the above does not work, try
202 # turning it off and enabling the following line.
203 # cat ${TMPFILE} | grep " *Storage Element [0-9]*:.*Full" | sed "s/ Storage Element //" | sed "s/Full :VolumeTag=//"
205 cat ${TMPFILE} | grep "^Data Transfer Element [0-9]*:Full (Storage Element [0-9]" | awk '{printf "%s:%s\n",$7,$10}'
206 rm -f ${TMPFILE} >/dev/null 2>&1
211 debug "Doing mtx -f $ctl $drive -- to find what is loaded"
213 ${MTX} -f $ctl status >${TMPFILE}
215 cat ${TMPFILE} | grep "^Data Transfer Element $drive:Full" | awk "{print \$7}"
216 cat ${TMPFILE} | grep "^Data Transfer Element $drive:Empty" | awk "{print 0}"
217 rm -f ${TMPFILE} >/dev/null 2>&1
222 debug "Doing mtx -f $ctl -- to get count of slots"
223 ${MTX} -f $ctl status | grep " *Storage Changer" | awk "{print \$5}"