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-rw-r--r--nova/compute/manager.py2
-rw-r--r--nova/tests/compute/test_compute.py6
2 files changed, 6 insertions, 2 deletions
diff --git a/nova/compute/manager.py b/nova/compute/manager.py
index fd0f9049a..26b8dbb7a 100644
--- a/nova/compute/manager.py
+++ b/nova/compute/manager.py
@@ -1762,7 +1762,7 @@ class ComputeManager(manager.SchedulerDependentManager):
@exception.wrap_exception(notifier=notifier, publisher_id=publisher_id())
@wrap_instance_fault
- def get_diagnostics(self, context, instance_uuid=None, instance=None):
+ def get_diagnostics(self, context, instance=None, instance_uuid=None):
"""Retrieve diagnostics for an instance on this host."""
if not instance:
instance = self.db.instance_get_by_uuid(context, instance_uuid)
diff --git a/nova/tests/compute/test_compute.py b/nova/tests/compute/test_compute.py
index 5cee6f94d..8367065d3 100644
--- a/nova/tests/compute/test_compute.py
+++ b/nova/tests/compute/test_compute.py
@@ -868,7 +868,11 @@ class ComputeTestCase(BaseTestCase):
self.compute.run_instance(self.context, instance['uuid'])
diagnostics = self.compute.get_diagnostics(self.context,
- instance['uuid'])
+ instance_uuid=instance['uuid'])
+ self.assertEqual(diagnostics, 'FAKE_DIAGNOSTICS')
+
+ diagnostics = self.compute.get_diagnostics(self.context,
+ instance=instance)
self.assertEqual(diagnostics, 'FAKE_DIAGNOSTICS')
self.compute.terminate_instance(self.context, instance['uuid'])