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.
38 # Set this to a directory that only the SD can read/write
42 # The purpose of this function to wait a maximum
43 # time for the drive. It will
44 # return as soon as the drive is ready, or after
45 # waiting a maximum of 180 seconds.
46 # Note, this is very system dependent, so if you are
47 # not running on Linux, you will probably need to
48 # re-write it, or at least change the grep target.
52 while [ $i -le 180 ]; do # Wait max 180 seconds
53 if mt -f $1 status | grep ONLINE >/dev/null 2>&1; then
56 # echo "Device $1 - not ready, retrying..."
63 if test $# -lt 2 ; then
64 echo "usage: mtx-changer ctl-device command slot archive-device drive"
65 echo " Insufficient number of arguments arguments given."
66 echo " Mimimum usage is first two arguments ..."
75 # If drive not given, default to 0
83 # Check for special cases where only 2 arguments are needed,
84 # all others are a minimum of 3
95 if test $# -lt 3; then
96 echo "usage: mtx-changer ctl-device command slot archive-device drive"
97 echo " Insufficient number of arguments arguments given."
98 echo " Mimimum usage is first three arguments ..."
107 # echo "Doing mtx -f $ctl unload $slot $drive"
109 # enable the following line if you need to eject the cartridge
110 # mt -f $device offline
111 if test x$slot = x; then
112 ${MTX} -f $ctl unload
114 ${MTX} -f $ctl unload $slot $drive
119 # echo "Doing mtx -f $ctl load $slot $drive"
120 ${MTX} -f $ctl load $slot $drive
123 # Increase the sleep time if you have a slow device
124 # or remove the sleep and add the following:
125 # wait_for_drive $device
131 # echo "Doing mtx -f $ctl -- to list volumes"
132 ${MTX} -f $ctl status >${TMPDIR}/mtx.$$
134 cat ${TMPDIR}/mtx.$$ | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
135 cat ${TMPDIR}/mtx.$$ | grep "^Data Transfer Element [0-9]*:Full (Storage Element [0-9]" | awk '{printf "%s:%s\n",$7,$10}'
136 rm -f ${TMPDIR}/mtx.$$ 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"
146 ${MTX} -f $ctl status >${TMPDIR}/mtx.$$
148 cat ${TMPDIR}/mtx.$$ | grep "^Data Transfer Element $drive:Full" | awk "{print \$7}"
149 cat ${TMPDIR}/mtx.$$ | grep "^Data Transfer Element $drive:Empty" | awk "{print 0}"
150 rm -f ${TMPDIR}/mtx.$$ 2>&1 >/dev/null
155 # echo "Doing mtx -f $ctl -- to get count of slots"
156 ${MTX} -f $ctl status | grep " *Storage Changer" | awk "{print \$5}"