diff --git a/metadata/service/control/single.yml b/metadata/service/control/single.yml
index 3c73957..0e87b00 100644
--- a/metadata/service/control/single.yml
+++ b/metadata/service/control/single.yml
@@ -12,6 +12,8 @@
     controller:
       enabled: true
       version: ${_param:cinder_version}
+      concurrency:
+        lock_path: '/var/lock/cinder'
       osapi:
         host: ${_param:single_address}
       database: