openstacksdk/releasenotes/notes/change-attach-vol-return-value-4834a1f78392abb1.yaml

---
upgrade:
  - |
    The ``attach_volume`` method now always returns a ``volume_attachment``
    object. Previously, ``attach_volume`` would return a ``volume`` object if
    it was called with ``wait=True`` and a ``volume_attachment`` object
    otherwise.