manila/releasenotes/notes/per-backend-az-590c68be0e2c...

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---
features:
- |
Availability zones may now be configured per backend in a multi-backend
configuration. Individual back end sections can now have the configuration
option ``backend_availability_zone`` set. If set, this value will override
the ``storage_availability_zone`` option from the [DEFAULT] section.
upgrade:
- The ``storage_availability_zone`` option can now be overridden per
backend by using the ``backend_availability_zone`` option within the
backend stanza. This allows enabling multiple storage backends that may
be deployed in different AZs in the same ``manila.conf`` file if
desired, simplifying service architecture around the Share Replication
feature.