Index: trunk/DataCheck/Monitoring/CheckDU.sh
===================================================================
--- trunk/DataCheck/Monitoring/CheckDU.sh	(revision 13399)
+++ trunk/DataCheck/Monitoring/CheckDU.sh	(revision 13578)
@@ -43,12 +43,18 @@
 for dir in ${dirs[@]}
 do 
-   # get available disk space
-   diskusage=( `df -P $dir | grep $dir ` )
-   # check if more than X GB are left on /loc_data
-   if [ ${diskusage[3]} -lt $dulimit ] 
-   then
-      echo "WARN less than "$dutext" left on "$dir" on node "$HOSTNAME
-      df -h $dir
-      echo ""
+   # check if directory is mounted (check if empty) 
+   if [ "$(ls -A $dir)" ]
+   then 
+      # get available disk space
+      diskusage=( `df -P $dir | grep $dir ` )
+      # check if more than X GB are left on /loc_data
+      if [ ${diskusage[3]} -lt $dulimit ] 
+      then
+         echo "WARN less than "$dutext" left on "$dir" on node "$HOSTNAME
+         df -h $dir
+         echo ""
+      fi
+   else
+      echo "ERROR "$dir" seems to be not mounted."
    fi
 done