---
features:
  - Add ``--reason`` option to the ``server lock`` command to specify a reason
    when locking a server.
    Requires ``–os-compute-api-version`` 2.73 or greater.
  - Add ``--locked`` option to the ``server list`` command to list only locked
    servers.
    Requires ``–os-compute-api-version`` 2.73 or greater.
  - Add ``--unlocked`` option to the ``server list`` command list only unlocked
    servers.
    Requires ``–os-compute-api-version`` 2.73 or greater.
    [Blueprint `add-locked-reason <https://blueprints.launchpad.net/nova/+spec/add-locked-reason>`_]