Remove old increments on fail

backup.sh

@@ -15,8 +15,18 @@ exit_on_fail(){
 
 retrie_on_fail(){
     if [ $1 -ne 0 ]; then
-        backup "cleaned"
+        keep=$(($BK_KEEP_FULL-1))
+        if [ $keep -gt 0 ]; then
             run_duplicity remove-all-inc-of-but-n-full $(($BK_KEEP_FULL-1)) --force
+        else
+            cat <<EOF | lftp $host
+            user $user $ftppass
+
+            rm -rf $remotedir/*-inc*
+            rm -rf $remotedir/*-new-signatures*
+EOF
+        fi
+        backup "cleaned"
         leave $?
     fi
 }