openstack/openstack-manuals
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Merge "vmware: Updates in data store selection section"

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Jenkins 2014-02-04 03:04:37 +00:00 committed by Gerrit Code Review
commit f6f19f9781
1 changed files with 8 additions and 7 deletions
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doc/config-reference/block-storage/drivers/vmware-vmdk-driver.xml
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@ -171,12 +171,13 @@
<simplesect>
<title>Data store selection</title>
<para>When creating a volume, the driver chooses a data store
that has sufficient free space and has the highest
<literal>freespace/totalspace</literal> metric
value.</para>
<para>When a volume is attached to an instance, the driver
attempts to place the volume under the instance's ESX host
on a data store that is selected using the strategy
above.</para>
which is connected to maximum number of hosts. This is
meant to reduce the number of volume migrations while
attaching the volume to instances. The volume needs to be
migrated if the instance's ESX host cannot access the
data store containing the volume. In case of ties, the
data store with lowest space utilization is selected, where
space utilization is defined by the metric
<literal>(1 - freespace/totalspace)</literal>.</para>
</simplesect>
</section>