diff --git a/src/tripleo_aio_helpers/prepare_deployment.py b/src/tripleo_aio_helpers/prepare_deployment.py
index 993805a..4597e13 100644
--- a/src/tripleo_aio_helpers/prepare_deployment.py
+++ b/src/tripleo_aio_helpers/prepare_deployment.py
@@ -18,9 +18,7 @@ def parse_args():
     parser.add_argument("-a", "--address", required=True)
     parser.add_argument("-i", "--interface", required=True)
     parser.add_argument("-m", "--netmask", default=24)
-    parser.add_argument(
-        "-d", "--dns", nargs="+", action="append", required=True
-    )
+    parser.add_argument("-d", "--dns", nargs="+", action="append", required=True)
     parser.add_argument("-D", "--domain", default="aio")
     parser.add_argument("--using-multiple-nics", action="store_true")
     parser.add_argument("-U", "--deployment-user")
@@ -37,6 +35,11 @@ def parse_args():
     parser.add_argument(
         "--deploy-script-out", default=f"{home}/deploy.sh.gen", dest="deploy"
     )
+    parser.add_argument(
+        "--cinder-pool-size",
+        default="500280",
+        help="Size of the loopback device allocated to cinder. " "Defaults to 500280",
+    )
 
     args = parser.parse_args()
 
@@ -69,6 +72,7 @@ def get_standalone_parameters(args):
             "StandaloneEnableRoutedNetworks": False,
             "StandaloneHomeDir": args.deployment_dir,
             "StandaloneLocalMtu": 1500,
+            "CinderLVMLoopDeviceSize": args.cinder_pool_size,
         }
     }
 
@@ -128,22 +132,17 @@ def set_hostname(args):
     print("set_hostname is not yet implemented")
 
 
-
 def main():
     """main function"""
     args = parse_args()
 
     containers_yaml = build_containers_yaml(args)
-    with open(
-        args.containers_yaml_out, "w", encoding="utf-8"
-    ) as containers_out:
+    with open(args.containers_yaml_out, "w", encoding="utf-8") as containers_out:
         containers_out.write(yaml.dump(containers_yaml))
     print(f"containers yaml written to {args.containers_yaml_out}")
 
     standalone_parameters = get_standalone_parameters(args)
-    with open(
-        args.standalone_yaml_out, "w", encoding="utf-8"
-    ) as parameters_out:
+    with open(args.standalone_yaml_out, "w", encoding="utf-8") as parameters_out:
         parameters_out.write(yaml.dump(standalone_parameters))
     print(f"standalone parameters yaml written to {args.standalone_yaml_out}")
 
@@ -151,7 +150,10 @@ def main():
         deploy.write(deploy_sh(args))
     print(f"deploy script written to {args.deploy}")
 
-    print("If you are running on a cloud image remenber to disable cloud-init before running the deploy.")
+    print(
+        "If you are running on a cloud image remenber to disable cloud-init "
+        "before running the deploy."
+    )
     print("sudo systemctl stop cloud-init")
     print("sudo systemctl disable cloud-init")
     print("Make sure you have specifed the correct interface to use!")