Add additional checks for correct mounting and tagert being writeable

seqs/backup.sh

@@ -89,7 +89,7 @@ step_3() {
   fi
 
   if [ -z "$1" ] ; then
-    echoerr " [E] Noting found to backup $1"
+    echoerr " [E] Nothing found to backup $1"
     exit 1
   fi
   
@@ -137,7 +137,15 @@ step_3() {
     tmpTarget="${buTarget}/"
   fi
 
+  # remount target to be writable
   exep "mount -o rw,remount '${buTarget}' >>/dev/null 2>&1"
+  endReturn -o $? "Remount (${buTarget}) to be writable failed"
+  
+  if [ ! -w "${buTarget}" ] ; then 
+    echoerr " [E] Backup target (${buTarget}) is not writable"
+    exit 1
+  fi
+  
   exep "mv -f ${buTarget}/${buLog}0.log /tmp/${buLog}1.log 2>/dev/null"
   exep "rsync -avxHAX --delete --info=stats2 ${buExcludes[*]} ${tmpSource} ${tmpTarget} > /tmp/${buLog}0.log"