---
upgrade:
  - In VNX Cinder driver, ``replication_device`` keys, ``backend_id`` and
    ``san_ip`` are mandatory now. If you prefer security file authentication,
    please append ``storage_vnx_security_file_dir`` in ``replication_device``,
    otherwise, append ``san_login``, ``san_password``,
    ``storage_vnx_authentication_type`` in ``replication_device``.