--- features: - | This release adds client support for the Glance feature `multi-store backend support `_, introduced in the Rocky release. This feature allows end users to direct uploaded or imported image data to a particular backend when a cloud operator has configured the Image Service to use multiple backends. The available backends are discoverable by making the ``stores-info`` call, which will return a list of available backends. The list contains an identifier (``id``) and a ``description`` of each available backend. The default backend is indicated in this response. When uploading or importing an image, the glanceclient now accepts the ``--backend`` option. Its value must be the ``id`` of a backend configured in the cloud against which the call is being made. This option may also be configured by exporting the ``OS_IMAGE_BACKEND`` environment variable with the ``id`` of a configured backend as its value. Some other points to keep in mind: - If no backend is specified, the image data is stored in the default backend. - If the version of the Image Service API contacted does not support multi-store backends, the option is silently ignored and the image data is stored in the default backend. - If an invalid backend identifier is used, the glanceclient will exit with an error message. - Backend identifiers and their meanings are unique to each cloud. Consult the ``stores-info`` call and your cloud provider's documentation for details.