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diff --git a/nova/limit/utils.py b/nova/limit/utils.py
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+# Copyright 2022 StackHPC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import nova.conf
+CONF = nova.conf.CONF
+
+UNIFIED_LIMITS_DRIVER = "nova.quota.UnifiedLimitsDriver"
+
+
+def use_unified_limits():
+ return CONF.quota.driver == UNIFIED_LIMITS_DRIVER