--- a/pvl/backup/rsync.py	Thu Feb 16 12:18:42 2012 +0200
+++ b/pvl/backup/rsync.py	Thu Feb 16 16:32:22 2012 +0200
@@ -90,7 +90,7 @@
             # mount
             log.info("Mounting snapshot: %s -> %s", snapshot, path)
 
-            with mount(snapshot.dev_path, path) as mountpoint:
+            with mount(snapshot.dev_path, path, readonly=True) as mountpoint:
                 log.info("Mounted snapshot: %s", mountpoint)
                 
                 # rsync!