cinder/releasenotes/notes/fujitsu-qos-support-1c1528d...

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---
features:
- |
Fujitsu ETERNUS DX driver: Added support for QoS
What QoS settings are available depends upon the storage firmware version
of the ETERNUS AF/DX.
* When the storage firmware version is less than V11L30-0000,
only the upper limit of bandwidth(BWS) can be set using:
- ``maxBWS``
Note that when the firmware version of the ETERNUS AF/DX is earlier
than V11L30, upper limits for the volume QoS settings of
the ETERNUS AF/DX are set using predefined options. This means that
you should set the upper limit *of the ETERNUS AF/DX side* to a maximum
value that does not exceed the specified ``maxBWS``.
* When the storage firmware version is greater than V11L30-0000,
the IOPS/Throughput of Total/Read/Write for the volume can be set
separately using:
- ``read_bytes_sec``
- ``write_bytes_sec``
- ``total_bytes_sec``
- ``read_iops_sec``
- ``write_iops_sec``
- ``total_iops_sec``
See the `Fujitsu ETERNUS DX driver documentation
<https://docs.openstack.org/cinder/latest/configuration/block-storage/drivers/fujitsu-eternus-dx-driver.html>`_
for details.