Improved logging for DRBD job

cloudcontrol/node/hypervisor/jobs.py

@@ -774,7 +774,8 @@ class DRBD(object):
         try:
             subproc_call([self.DMSETUP, 'create', self.dm_copy], self.dm_table)
         except CalledProcessError:
-            logger.error('Cannot create copy DM of LV')
+            logger.error('Cannot create copy DM of LV with table "%s"',
+                         self.dm_table)
             raise
         logger.debug('Setup DRBD device')
         # get drbd path