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 # The purpose of this function to wait a maximum
34 # time for the drive. It will
35 # return as soon as the drive is ready, or after
36 # waiting a maximum of 180 seconds.
37 # Note, this is very system dependent, so if you are
38 # not running on Linux, you will probably need to
41 # If you have a FreeBSD system, you might want to change
42 # the $(seq 180) to $(jot 180) -- tip from Brian McDonald
45 for i in $(seq 180); do # Wait max 180 seconds
46 if mt -f $1 status >/dev/null 2>&1; then
49 # echo "Device $1 - not ready, retrying..."
55 if test $# -lt 2 ; then
56 echo "usage: mtx-changer ctl-device command slot archive-device drive"
57 echo " Insufficient number of arguments arguments given."
58 echo " Mimimum usage is first two arguments ..."
67 # If drive not given, default to 0
75 # Check for special cases where only 2 arguments are needed,
76 # all others are a minimum of 3
87 if test $# -lt 3; then
88 echo "usage: mtx-changer ctl-device command slot archive-device drive"
89 echo " Insufficient number of arguments arguments given."
90 echo " Mimimum usage is first three arguments ..."
99 # echo "Doing mtx -f $ctl unload $slot $drive"
101 # enable the following line if you need to eject the cartridge
102 # mt -f $device offline
103 if test x$slot = x; then
104 ${MTX} -f $ctl unload
106 ${MTX} -f $ctl unload $slot $drive
111 # echo "Doing mtx -f $ctl load $slot $drive"
112 ${MTX} -f $ctl load $slot $drive
115 # Increase the sleep time if you have a slow device
116 # or remove the sleep and add the following:
117 # wait_for_drive $device
123 # echo "Requested list"
124 ${MTX} -f $ctl status | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
125 # Comment out the previous line and add a line here
126 # to print "fake" barcodes.
128 # If you have a VXA PacketLoader and the above does not work, try
129 # turning it off and enabling the following line.
130 # ${MTX} -f $ctl status | grep " *Storage Element [0-9]*:.*Full" | sed "s/*Storage Element //" | sed "s/Full :VolumeTag=//"
134 ${MTX} -f $ctl status >/tmp/mtx.$$
136 cat /tmp/mtx.$$ | grep "^Data Transfer Element $drive:Full" | awk "{print \$7}"
137 cat /tmp/mtx.$$ | grep "^Data Transfer Element $drive:Empty" | awk "{print 0}"
143 # echo "Request slots"
144 ${MTX} -f $ctl status | grep " *Storage Changer" | awk "{print \$5}"