1 files changed, 6 insertions, 0 deletions
diff --git a/nova/utils.py b/nova/utils.py
index 7b96a0daf..d114cb14f 100644
--- a/nova/utils.py
+++ b/nova/utils.py
@@ -629,3 +629,9 @@ def map_dict_keys(dict_, key_map):
         mapped_key = key_map[key] if key in key_map else key
         mapped[mapped_key] = value
     return mapped
+
+
+def subset_dict(dict_, keys):
+    """Return a dict that only contains a subset of keys"""
+    subset = partition_dict(dict_, keys)[0]
+    return subset