--- upgrade: - | The support for ``cinder.keymgr.barbican.BarbicanKeyManager`` and the ``[keymgr]`` config section has now been removed. All configs should now be switched to use ``castellan.key_manager.barbican_key_manager.BarbicanKeyManager`` and the ``[key_manager]`` config section. deprecations: - | The Castellan library used for encryption has deprecated the ``api_class`` config option. Configuration files using this should now be updated to use the ``backend`` option instead.