openstack/openstack-manuals
Code Issues Proposed changes

Added QOS information in the Storwize Driver section

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1. Added information about Storwize Driver QOS support as per https://review.openstack.org/#/c/110868/
2. Added QOS configuration behavior when changing volume types

Change-Id: Ib64487538ec03379928b657b23e02583a66c96c4
backport: juno
Closes-Bug: #1375917
This commit is contained in:
darrenchan 2014-12-11 13:02:57 +11:00
parent dbc0080f10
commit 40ce626d1e
1 changed files with 30 additions and 0 deletions
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doc/config-reference/block-storage/drivers/ibm-storwize-svc-driver.xml
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@ -610,6 +610,36 @@
</listitem>
</itemizedlist>
</simplesect>
<simplesect>
<title>QOS</title>
<para>The Storwize driver provides QOS support for storage
volumes by controlling the I/O amount. QOS is enabled by
editing the <filename>etc/cinder/cinder.conf</filename> file and setting the
<literal>storwize_svc_allow_tenant_qos</literal> to
<replaceable>True</replaceable>.</para>
<para>There are three ways to set the Storwize <literal>IOThrotting</literal>
parameter for storage volumes:</para>
<itemizedlist>
<listitem>
<para>Add the <literal>qos:IOThrottling</literal> key
into a QOS specification and associate it with a volume
type.</para>
</listitem>
<listitem>
<para>Add the <literal>qos:IOThrottling</literal> key into
an extra specification with a volume type.</para>
</listitem>
<listitem>
<para>Add the <literal>qos:IOThrottling</literal> key to
the storage volume metadata.</para>
</listitem>
</itemizedlist>
<note>
<para>If you are changing a volume type with QOS to a new
volume type without QOS, the QOS configuration settings will
be removed.</para>
</note>
</simplesect>
</section>
<section xml:id="ibm-storwize-svc-driver3">
<title>Operational notes for the Storwize family and SVC