gistfile1.txt

diff --git a/nova/objects/instance.py b/nova/objects/instance.py
index 4ee3ca9..2768fb9 100644
--- a/nova/objects/instance.py
+++ b/nova/objects/instance.py
@@ -88,7 +88,8 @@ class Instance(base.NovaPersistentObject, base.NovaObject,
                base.NovaObjectDictCompat):
     # Version 2.0: Initial version
     # Version 2.1: Added services
-    VERSION = '2.1'
+    # 2.2: drop tags
+    VERSION = '2.2'
 
     fields = {
         'id': fields.IntegerField(),
@@ -179,7 +180,6 @@ class Instance(base.NovaPersistentObject, base.NovaObject,
                                             nullable=True),
         'pci_requests': fields.ObjectField('InstancePCIRequests',
                                            nullable=True),
-        'tags': fields.ObjectField('TagList'),
         'flavor': fields.ObjectField('Flavor'),
         'old_flavor': fields.ObjectField('Flavor', nullable=True),
         'new_flavor': fields.ObjectField('Flavor', nullable=True),
user@xubuntu:~/git/nova$