---
features:
  - |
    A new online data migration has been added to populate missing
    ``root_provider_id`` in the resource_providers table. This can
    be run during the normal placement-manage db online_data_migrations
    routine. See the `Bug#1803925`_ for more details.

    .. _Bug#1803925: https://bugs.launchpad.net/nova/+bug/1803925