openstack/openstack-manuals
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Merge "SolidFire driver update for new feature."

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Jenkins 2016-12-11 23:48:43 +00:00 committed by Gerrit Code Review
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doc/config-reference/source/block-storage/drivers/solidfire-volume-driver.rst
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@ -62,6 +62,7 @@ Supported operations
* Extend a volume.
* Retype a volume.
* Manage and unmanage a volume.
* Consistency group snapshots.
QoS support for the SolidFire drivers includes the ability to set the
following capabilities in the OpenStack Block Storage API
@ -76,8 +77,28 @@ following capabilities in the OpenStack Block Storage API
* **burstIOPS** - The maximum number of IOPS allowed over a short period of
time. Default = 15,000.
* **scaledIOPS** - The presence of this key is a flag indicating that the
above IOPS should be scaled by the following scale values. It is recommended
to set the value of scaledIOPS to True, but any value will work. The
absence of this key implies false.
* **scaleMin** - The amount to scale the minIOPS by for every 1GB of
additional volume size. The value must be an integer.
* **scaleMax** - The amount to scale the maxIOPS by for every 1GB of additional
volume size. The value must be an integer.
* **scaleBurst** - The amount to scale the burstIOPS by for every 1GB of
additional volume size. The value must be an integer.
The QoS keys above no longer require to be scoped but must be created and
associated to a volume type. For information about how to set the key-value
pairs and associate them with a volume type, see the `volume qos
<http://docs.openstack.org/developer/python-openstackclient/command-objects/volume-qos.html>`_
section in the OpenStackClient command list.
.. note::
When using scaledIOPS, the scale values must be chosen such that the
constraint minIOPS <= maxIOPS <= burstIOPS is always true. The driver will
enforce this constraint.