cinder/releasenotes/notes/untyped_to_default_type-006...

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YAML

---
features:
- |
Added a new default volume type ``__DEFAULT__`` which
will be used when
- A new volume is created without a type
- The `default_volume_type` option is unset in cinder.conf
Then the volume will be assigned the ``__DEFAULT__`` type.
upgrade:
- |
The db migration script will create a volume type named
``__DEFAULT__``
The online migration will migrate all existing untyped
volumes, snapshots to the ``__DEFAULT__`` type.
An invalid/non-existent type specified with `default_volume_type`
option in cinder.conf will result in VolumeTypeNotFoundByName exception.