nova-glance.patch

--- nova-orig/image/glance.py	2014-06-05 23:33:22.000000000 +0200
+++ nova/image/glance.py	2014-07-31 08:59:04.534413522 +0200
@@ -342,6 +342,7 @@
                 for chunk in image_chunks:
                     data.write(chunk)
             finally:
+                utils.fsync(data)
                 if close_file:
                     data.close()
 
--- nova-orig/utils.py	2014-07-31 08:49:52.061822770 +0200
+++ nova/utils.py	2014-07-31 09:38:55.206518192 +0200
@@ -19,6 +19,7 @@
 
 import contextlib
 import datetime
+import fcntl
 import functools
 import hashlib
 import inspect
@@ -1170,3 +1171,19 @@
         return multiprocessing.cpu_count()
     except NotImplementedError:
         return 1
+
+
+# copied from swift/common/utils.py
+def fsync(fd):
+    """
+    Sync modified file data and metadata to disk.
+
+    :param fd: file descriptor
+    """
+    if hasattr(fcntl, 'F_FULLSYNC'):
+        try:
+            fcntl.fcntl(fd, fcntl.F_FULLSYNC)
+        except IOError as e:
+            raise OSError(e.errno, 'Unable to F_FULLSYNC(%s)' % fd)
+    else:
+        os.fsync(fd)