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 # mtx-changer "changer-device" "command" "slot" "archive-device" "drive-index"
17 # mtx-changer /dev/sg0 load 1 /dev/nst0 0 (on a Linux system)
19 # If you need to an offline, refer to the drive as $4
20 # e.g. mt -f $4 offline
22 # Many changers need an offline after the unload. Also many
23 # changers need a sleep 60 after the mtx load.
25 # N.B. If you change the script, take care to return either
26 # the mtx exit code or a 0. If the script exits with a non-zero
27 # exit code, Bacula will assume the request failed.
33 for i in $(seq 180); do # Wait max 180 seconds
34 if mt -f $1 status >/dev/null 2>&1; then
37 # echo "Device $1 - not ready, retrying..."
43 if test $# -lt 2 ; then
44 echo "usage: mtx-changer ctl-device command slot archive-device drive"
45 echo " Insufficient number of arguments arguments given."
46 echo " Mimimum usage is first two arguments ..."
55 # If drive not given, default to 0
63 # Check for special cases where only 2 arguments are needed,
64 # all others are a minimum of 3
75 if test $# -lt 3; 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 three arguments ..."
87 # echo "Doing mtx -f $ctl unload $slot $drive"
89 # enable the following line if you need to eject the cartridge
90 # mt -f $device offline
91 if test x$slot = x; then
94 ${MTX} -f $ctl unload $slot $drive
99 # echo "Doing mtx -f $ctl load $slot $drive"
100 ${MTX} -f $ctl load $slot $drive
103 # Increase the sleep time if you have a slow device
104 # or remove the sleep and add the following:
105 # wait_for_drive $device
111 # echo "Requested list"
112 ${MTX} -f $ctl status | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
113 # Comment out the previous line and add a line here
114 # to print "fake" barcodes.
118 ${MTX} -f $ctl status >/tmp/mtx.$$
120 cat /tmp/mtx.$$ | grep "^Data Transfer Element $drive:Full" | awk "{print \$7}"
121 cat /tmp/mtx.$$ | grep "^Data Transfer Element $drive:Empty" | awk "{print 0}"
127 # echo "Request slots"
128 ${MTX} -f $ctl status | grep " *Storage Changer" | awk "{print \$5}"