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 $4 offline
29 # Many changers need an offline after the unload. Also many
30 # changers need a sleep 60 after the mtx load.
32 # N.B. If you change the script, take care to return either
33 # the mtx exit code or a 0. If the script exits with a non-zero
34 # exit code, Bacula will assume the request failed.
40 # Create a temporary file
43 TMPFILE=`mktemp -t mtx.XXXXXXXXXX`
44 if test x${TMPFILE} = x; then
45 TMPFILE="@working_dir@/mtx.$$"
46 if test -f ${TMPFILE}; then
47 echo "Temp file security problem on: ${TMPFILE}"
54 # The purpose of this function to wait a maximum
55 # time for the drive. It will
56 # return as soon as the drive is ready, or after
57 # waiting a maximum of 300 seconds.
58 # Note, this is very system dependent, so if you are
59 # not running on Linux, you will probably need to
60 # re-write it, or at least change the grep target.
64 while [ $i -le 300 ]; do # Wait max 300 seconds
65 if mt -f $1 status | grep ONLINE >/dev/null 2>&1; then
68 # echo "Device $1 - not ready, retrying..."
75 if test $# -lt 2 ; then
76 echo "usage: mtx-changer ctl-device command slot archive-device drive"
77 echo " Insufficient number of arguments arguments given."
78 echo " Mimimum usage is first two arguments ..."
91 # Check for special cases where only 2 arguments are needed,
92 # all others are a minimum of 3
99 if test $# -lt 5; then
100 echo "usage: mtx-changer ctl-device command slot archive-device drive"
101 echo " Insufficient number of arguments arguments given."
110 # echo "Doing mtx -f $ctl unload $slot $drive"
112 # enable the following line if you need to eject the cartridge
113 # mt -f $device offline
114 ${MTX} -f $ctl unload $slot $drive
118 # echo "Doing mtx -f $ctl load $slot $drive"
119 ${MTX} -f $ctl load $slot $drive
122 # Increase the sleep time if you have a slow device
123 # or remove the sleep and add the following:
124 # wait_for_drive $device
130 # echo "Doing mtx -f $ctl -- to list volumes"
132 ${MTX} -f $ctl status >${TMPFILE}
134 cat ${TMPFILE} | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
135 cat ${TMPFILE} | grep "^Data Transfer Element [0-9]*:Full (Storage Element [0-9]" | awk '{printf "%s:%s\n",$7,$10}'
136 rm -f ${TMPFILE} 2>&1 >/dev/null
138 # If you have a VXA PacketLoader and the above does not work, try
139 # turning it off and enabling the following line.
140 # ${MTX} -f $ctl status | grep " *Storage Element [0-9]*:.*Full" | sed "s/*Storage Element //" | sed "s/Full :VolumeTag=//"
145 # echo "Doing mtx -f $ctl $drive -- to find what is loaded"
147 ${MTX} -f $ctl status >${TMPFILE}
149 cat ${TMPFILE} | grep "^Data Transfer Element $drive:Full" | awk "{print \$7}"
150 cat ${TMPFILE} | grep "^Data Transfer Element $drive:Empty" | awk "{print 0}"
151 rm -f ${TMPFILE} 2>&1 >/dev/null
156 # echo "Doing mtx -f $ctl -- to get count of slots"
157 ${MTX} -f $ctl status | grep " *Storage Changer" | awk "{print \$5}"