Merge "Log stack trace when fails launching a defined domain"

nova/tests/unit/virt/libvirt/test_guest.py

@@ -80,7 +80,7 @@ class GuestTestCase(test.NoDBTestCase):
         self.domain.createWithFlags.assert_called_once_with(
             fakelibvirt.VIR_DOMAIN_START_PAUSED)
 
-    @mock.patch.object(libvirt_guest.LOG, 'error')
+    @mock.patch.object(libvirt_guest.LOG, 'exception')
     @mock.patch.object(encodeutils, 'safe_decode')
     def test_launch_exception(self, mock_safe_decode, mock_log):
         fake_xml = '<test>this is a test</test>'

nova/virt/libvirt/guest.py

@@ -155,9 +155,8 @@ class Guest(object):
             return self._domain.createWithFlags(flags)
         except Exception:
             with excutils.save_and_reraise_exception():
-                LOG.error('Error launching a defined domain '
-                          'with XML: %s',
-                          self._encoded_xml, errors='ignore')
+                LOG.exception('Error launching a defined domain with XML: %s',
+                              self._encoded_xml, errors='ignore')
 
     def poweroff(self):
         """Stops a running guest."""