openstack/openstack-manuals
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Add Dell Storage Center Cinder extra spec info

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The volume type extra spec storagetype:storageprofile
can now be used to allow volumes to be created with
Storage Profiles other than the default.

This patch adds documentation around what this feature
is and how to configure it using the extra specs.

This documents a new feature for Liberty.

Backport: none
Change-Id: I042a8db4b53ae7b5ab0f136ceeb6e8b09734c5e1
Depends-On: Icf76fceca5a0ae20bb08b276b0c41ef6cdb31087
This commit is contained in:
Sean McGinnis 2015-06-22 14:23:04 -05:00 committed by Andreas Jaeger
parent 4650376fae
commit d40a4d6f14
1 changed files with 25 additions and 0 deletions
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25
doc/config-reference/block-storage/drivers/dell-storagecenter-driver.xml
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@ -41,6 +41,31 @@
</listitem>
</itemizedlist>
</simplesect>
<simplesect>
<title>Extra spec options</title>
<para>Volume type extra specs can be used to select different Storage
Profiles.</para>
<para>Storage Profiles control how Storage Center manages volume data.
For a given volume, the selected Storage Profile dictates which disk
tier accepts initial writes, as well as how data progression moves data
between tiers to balance performance and cost. Predefined Storage
Profiles are the most effective way to manage data in Storage
Center.</para>
<para>By default, if no Storage Profile is specified in the volume extra
specs, the default Storage Profile for the user account configured for
the Block Storage driver is used. The extra spec key
<literal>storagetype:storageprofile</literal> with the value of the name
of the Storage Profile on the Storage Center can be set to allow to use
Storage Profiles other than the default.</para>
<para>For ease of use from the command line, spaces in Storage Profile
names are ignored. As an example, here is how to define two volume
types using the <literal>High Priority</literal> and <literal>Low
Priority</literal> Storage Profiles:</para>
<screen><prompt>$</prompt> <userinput>cinder type-create "GoldVolumeType"</userinput>
<prompt>$</prompt> <userinput>cinder type-key "GoldVolumeType" set storagetype:storageprofile=highpriority</userinput>
<prompt>$</prompt> <userinput>cinder type-create "BronzeVolumeType"</userinput>
<prompt>$</prompt> <userinput>cinder type-key "BronzeVolumeType" set storagetype:storageprofile=lowpriority</userinput></screen>
</simplesect>
<simplesect>
<title>iSCSI configuration</title>
<para>Use the following instructions to update the configuration