---
features:
  - Adds support for using operators with the root device hints mechanism.
    The supported operators are, ``=``, ``==``, ``!=``, ``>=``,
    ``<=``, ``>``, ``<``, ``s==``, ``s!=``, ``s>=``, ``s>``,
    ``s<=``, ``s<``, ``<in>``, ``<all-in>`` and ``<or>``. See
    http://docs.openstack.org/project-install-guide/baremetal/draft/advanced.html#specifying-the-disk-for-deployment-root-device-hints