ceph-volume: lvm: print help and return before parsing args if no args

Signed-off-by: Alfredo Deza <adeza@redhat.com>

diff --git a/src/ceph-volume/ceph_volume/devices/lvm/activate.py b/src/ceph-volume/ceph_volume/devices/lvm/activate.py
index b6d04f52d0386c2ef81e9206045b12f6c2495868..666c2b45f01ff652078083f8b60ad1a115fd5a42 100644 (file)
--- a/src/ceph-volume/ceph_volume/devices/lvm/activate.py
+++ b/src/ceph-volume/ceph_volume/devices/lvm/activate.py
@@ -98,7 +98,8 @@ class Activate(object):
             action='store_true', default=True,
             help='filestore objectstore (current default)',
         )
-        args = parser.parse_args(self.argv[1:])
-        if len(self.argv) <= 1:
-            return parser.print_help()
+        if len(self.argv) == 0:
+            print sub_command_help
+            return
+        args = parser.parse_args(self.argv)
         self.activate(args)