- Tweak install chapter of French manual to add new paragraph

[bacula/bacula] / bacula / scripts / mtx-changer.in

diff --git a/bacula/scripts/mtx-changer.in b/bacula/scripts/mtx-changer.in
index 9d046ddbd2d4ca4add1208a46510c68ade4a31ee..37b7cc63706c4871d0fce183ff39a973c1da108e 100644 (file)
--- a/bacula/scripts/mtx-changer.in
+++ b/bacula/scripts/mtx-changer.in
@@ -6,17 +6,18 @@
 #
 #  If you set in your Device resource
 #
-#  Changer Command = "path-to-this-script/mtx-changer" %c %o %S %a
+#  Changer Command = "path-to-this-script/mtx-changer" %c %o %S %a %d
 #    you will have the following input to this script:
 #
-#  mtx-changer "changer-device" "command" "slot" "archive-device"
+#  mtx-changer "changer-device" "command" "slot" "archive-device" "drive-index"
+#                 $1              $2       $3        $4               $5
 #
 #  for example:
 #
-#  mtx-changer /dev/sg0 load 1 /dev/nst0 (on a Linux system)
+#  mtx-changer /dev/sg0 load 1 /dev/nst0 0 (on a Linux system)
 #
-#  If you need to to an offline, refer to the drive as $4
-#    e.g.   mt -f $f offline
+#  If you need to an offline, refer to the drive as $4
+#    e.g.   mt -f $4 offline
 #
 #  Many changers need an offline after the unload. Also many
 #   changers need a sleep 60 after the mtx load.
@@ -28,42 +29,118 @@
 
 MTX=@MTX@
 
-case "$2" in 
+#
+# The purpose of this function to wait a maximum 
+#   time for the drive. It will
+#   return as soon as the drive is ready, or after
+#   waiting a maximum of 180 seconds.
+# Note, this is very system dependent, so if you are
+#   not running on Linux, you will probably need to
+#   re-write it.
+#
+# If you have a FreeBSD system, you might want to change
+#  the $(seq 180) to $(jot 180) -- tip from Brian McDonald
+#
+wait_for_drive() {
+  for i in $(seq 180); do   # Wait max 180 seconds
+    if mt -f $1 status >/dev/null 2>&1; then
+      break
+    fi
+#   echo "Device $1 - not ready, retrying..."
+    sleep 1
+  done
+}
+
+
+if test $# -lt 2 ; then
+  echo "usage: mtx-changer ctl-device command slot archive-device drive"
+  echo "  Insufficient number of arguments arguments given."
+  echo "  Mimimum usage is first two arguments ..."
+  exit 1
+fi
+
+# Setup arguments
+ctl=$1
+cmd="$2"
+slot=$3
+device=$4
+# If drive not given, default to 0
+if test $# = 5 ; then
+  drive=$5
+else
+  drive=0
+fi
+
+#
+# Check for special cases where only 2 arguments are needed, 
+#  all others are a minimum of 3
+case $cmd in
+   loaded)
+     ;;
    unload)
-#     echo "Doing mtx -f $1 unload"
+     ;;
+   list)
+     ;;
+   slots)
+     ;;
+   *)
+     if test $# -lt 3; then
+       echo "usage: mtx-changer ctl-device command slot archive-device drive"
+       echo "  Insufficient number of arguments arguments given."
+       echo "  Mimimum usage is first three arguments ..."
+       exit 1
+     fi
+     ;;
+esac
+
+
+case $cmd in 
+   unload)
+#     echo "Doing mtx -f $ctl unload $slot $drive"
 #
 # enable the following line if you need to eject the cartridge
-#     mt -f $4 offline
-      ${MTX} -f $1 unload
+#     mt -f $device offline
+      if test x$slot = x; then
+        ${MTX} -f $ctl unload
+      else
+        ${MTX} -f $ctl unload $slot $drive
+      fi
       ;;
 
    load)
-#     echo "Doing mtx -f $1 load $3"
-      ${MTX} -f $1 load $3
+#     echo "Doing mtx -f $ctl load $slot $drive"
+      ${MTX} -f $ctl load $slot $drive
       rtn=$?
 #
 # Increase the sleep time if you have a slow device
+# or remove the sleep and add the following:
+#     wait_for_drive $device
       sleep 15
       exit $rtn
       ;;
 
    list) 
 #     echo "Requested list"
-      ${MTX} -f $1 status | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
+      ${MTX} -f $ctl status | grep " *Storage Element [0-9]*:.*Full" | awk "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
+# Comment out the previous line and add a line here
+# to print "fake" barcodes.
+#
+# If you have a VXA PacketLoader and the above does not work, try
+#  turning it off and enabling the following line.
+#     ${MTX} -f $ctl status | grep " *Storage Element [0-9]*:.*Full" | sed "s/*Storage Element //" | sed "s/Full :VolumeTag=//"
       ;;
 
    loaded)
-#     echo "Request loaded"
-      ${MTX} -f $1 status >/tmp/mtx.$$
+      ${MTX} -f $ctl status >/tmp/mtx.$$
       rtn=$?
-      cat /tmp/mtx.$$ | grep "^Data Transfer Element 0:Full" | awk "{print \$7}"
-      cat /tmp/mtx.$$ | grep "^Data Transfer Element 0:Empty" | awk "{print 0}"
+      cat /tmp/mtx.$$ | grep "^Data Transfer Element $drive:Full" | awk "{print \$7}"
+      cat /tmp/mtx.$$ | grep "^Data Transfer Element $drive:Empty" | awk "{print 0}"
       rm -f /tmp/mtx.$$
       exit $rtn
       ;;
 
    slots)
 #     echo "Request slots"
-      ${MTX} -f $1 status | grep " *Storage Changer" | awk "{print \$5}"
+      ${MTX} -f $ctl status | grep " *Storage Changer" | awk "{print \$5}"
       ;;
 esac