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docs: Add Release Notes about Disk I/O Polling and Throttling

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Wido den Hollander 2013-08-30 17:04:54 +02:00
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docs/en-US/Release_Notes.xml
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@ -243,6 +243,15 @@ under the License.
the patch disk a VirtIO serial console is used to pass meta information to System VMs.
This enabled the deployment of System VMs on RBD Primary Storage.</para>
</section>
<section id="disk-io-polling-throttling">
<title>Disk I/O polling and throttling</title>
<para><ulink url="https://issues.apache.org/jira/browse/CLOUDSTACK-1192">CLOUDSTACK-1192</ulink>:
On KVM hypervisors polling and throttling of disk I/Os is supported. Per disk disk attached to
an Instance the usage server will record the amount of IOps.</para>
<para>Per disk offering you are able to specify the number of Read and Write I/Os. Trottling is
done by Qemu/KVM.</para>
<para>Both polling and throttling only works with KVM and with all types of Primary Storage.</para>
</section>
</section>
<section id="issues-fixed-4.2">
<title>Issues Fixed in 4.2.0</title>