Ignore llistxattr problems for filesystems that do not support xattr

2 files changed, 13 insertions, 1 deletions

diff --git a/NEWS b/NEWS
index 62ad4b55..1d1509ed 100644
--- a/NEWS
+++ b/NEWS
@@ -18,6 +18,12 @@ Version X.Y, released UNRELEASED
 * The default sizes for the `lru-size` and `upload-queue-size` settings
   have been reduced, to reduce the memory impact of Obnam.
 
+Bug fixes:
+
+* If listing extended attributes for a filesystem that does not support
+  them, Obnam no longer crashes, just silently does not backup extended
+  attributes. Which aren't there anyway.
+
 Version 1.3, released 2012-12-16
 --------------------------------
 
diff --git a/obnamlib/metadata.py b/obnamlib/metadata.py
index 3153c6af..e31bafae 100644
--- a/obnamlib/metadata.py
+++ b/obnamlib/metadata.py
@@ -131,7 +131,13 @@ def _cached_getgrgid(gid): # pragma: no cover
 
 def get_xattrs_as_blob(fs, filename): # pragma: no cover
     tracing.trace('filename=%s' % filename)
-    names = fs.llistxattr(filename)
+    
+    try:
+        names = fs.llistxattr(filename)
+    except (OSError, IOError), e:
+        if e.errno == errno.EOPNOTSUPP:
+            return None
+        raise
     tracing.trace('names=%s' % repr(names))
     if not names:
         return None