add mover function to move the shares off a selected array disk onto other array disks

sbin/mover

@@ -73,6 +73,34 @@ start() {
   echo "mover: finished"
 }
 
+empty() {
+  if [ -f $PIDFILE ]; then
+    if ps h $(cat $PIDFILE) | grep mover ; then
+        echo "mover: already running"
+        exit 1
+    fi
+  fi
+
+  echo $$ >/var/run/mover.pid
+  echo "mover: started"
+
+  shopt -s nullglob
+
+  for SHAREPATH in /mnt/$DISK/* ; do
+    find "$SHAREPATH" -depth 2>/dev/null | /usr/libexec/unraid/move -e $DEBUGGING
+  done
+
+  # output list of files which could not be moved
+  shopt -s dotglob ; FILES=/mnt/$DISK/* ; shopt -u dotglob
+  if [ ${#files[@]} -gt 2 ]; then
+    echo "mover: not moved:"
+    ls -1 --almost-all --recursive /mnt/$DISK
+  fi
+
+  rm -f $PIDFILE
+  echo "mover: finished"
+}
+
 killtree() {
   local pid=$1 child
     
@@ -93,9 +121,42 @@ stop() {
   echo "mover: stopped"
 }
 
+# Function to display usage
+usage() {
+    echo "Usage: $0 start [-e] <disk_name>"
+    echo "       $0 stop|status"
+    echo "       <disk_name> must match pattern 'disk[0-9]*'"
+    exit 1
+}
+
+# validate disk name
+validate_disk() {
+    if [[ ! "$1" =~ ^disk[0-9]+$ ]]; then
+        echo "Error: <disk_name> must match pattern 'disk[0-9]*'"
+        usage
+    fi
+}
+
+if [ "$#" -lt 1 ]; then
+    usage
+    exit 1
+fi
+
 case $1 in
 start)
-  start
+    if [ -z "$2" ]; then
+        start
+    elif [ "$2" == "-e" ]; then
+        if [ -z "$3" ]; then
+            usage
+        else
+            validate_disk "$3"
+            DISK="$3"
+            empty
+        fi
+    else
+        usage
+    fi
   ;;
 stop)
   stop
@@ -104,8 +165,6 @@ status)
   [ -f $PIDFILE ]
   ;;
 *)
-  # Default is "start"
-  # echo "Usage: $0 (start|stop|status)"
-  start
+  usage
   ;;
 esac