pbs: remove infinite loops from pbs scripts.

Instead, of that, the notifier wrappers will run the scripts several more times in case of failures
This is better than silent failures.

slapos/recipe/pbs.py

@@ -82,7 +82,7 @@ class Recipe(GenericSlapRecipe, Notify, Callback):
         LC_ALL=C
         export LC_ALL
         RDIFF_BACKUP=%(rdiffbackup_binary)s
-        until $RDIFF_BACKUP \\
+        $RDIFF_BACKUP \\
                 --remote-schema %(remote_schema)s \\
                 --restore-as-of now \\
                 --force \\
@@ -90,7 +90,6 @@ class Recipe(GenericSlapRecipe, Notify, Callback):
                 %(remote_dir)s; do
           echo "repeating rdiff-backup..."
           sleep 10
-        done
         """)
 
     template_dict = {
@@ -137,7 +136,6 @@ class Recipe(GenericSlapRecipe, Notify, Callback):
         CANTFIND_FILE=$TMPDIR/$$.rdiff_cantfind
 
         SUCCEEDED=false
-        while ! $SUCCEEDED; do
 
         # not using --fix-corrupted can lead to an infinite loop
         # in case of manual changes to the backup repository.
@@ -206,7 +204,7 @@ class Recipe(GenericSlapRecipe, Notify, Callback):
         fi
 
         $SUCCEEDED || find $BACKUP_DIR -name rdiff-backup.tmp.* -exec rm -rf {} \;
-        done
+
         """)
 
     template_dict = {
@@ -305,6 +303,7 @@ class Recipe(GenericSlapRecipe, Notify, Callback):
         title=entry.get('title', slave_id),
         notification_url=entry['notify'] or '',
         feed_url='%s/get/%s' % (self.options['notifier-url'], entry['notification-id']),
+        max_run=self.options.get('pull-push-maximum-run', 1),
         pidfile=os.path.join(self.options['run-directory'], '%s.pid' % slave_id),
         instance_root_name=self.options.get('instance-root-name', None),
         log_url=self.options.get('log-url', None),