From c6672dd68a6f94b7fb6d1a0e4e4ac3a4ab7b9758 Mon Sep 17 00:00:00 2001
From: Wido den Hollander <wido@widodh.nl>
Date: Fri, 30 Aug 2013 17:04:54 +0200
Subject: [PATCH] docs: Add Release Notes about Disk I/O Polling and Throttling

---
 docs/en-US/Release_Notes.xml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/docs/en-US/Release_Notes.xml b/docs/en-US/Release_Notes.xml
index dbd7520e5a4..15b452c7218 100644
--- a/docs/en-US/Release_Notes.xml
+++ b/docs/en-US/Release_Notes.xml
@@ -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>