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Re: [libvirt] [PATCHv6 3/7] Support block I/O throttle in XML



On 11/23/2011 02:44 PM, Eric Blake wrote:
> From: Lei Li <lilei linux vnet ibm com>
> 
> Enable block I/O throttle for per-disk in XML, as the first
> per-disk IO tuning parameter.
> 
> Signed-off-by: Lei Li <lilei linux vnet ibm com>
> Signed-off-by: Zhi Yong Wu <wuzhy linux vnet ibm com>
> Signed-off-by: Eric Blake <eblake redhat com>

> @@ -1039,6 +1044,40 @@
>          <span class="since">Since 0.0.3; <code>bus</code> attribute since 0.4.3;
>          "usb" attribute value since after 0.4.4; "sata" attribute value since
>          0.9.7</span></dd>
> +      <dt><code>iotune</code></dt>
> +      <dd>The optional <code>iotune</code> element provides the
> +        ability to provide additional per-device I/O tuning, with
> +        values that can vary for each device (contrast this to
> +        the <a href="#elementsBlockTuning"><code>&lt;blkiotune&gt;</code></a>
> +        element, which applies globally to the domain).

I added a cross-reference in one direction, but not the other, so I'll
squash this in:

diff --git i/docs/formatdomain.html.in w/docs/formatdomain.html.in
index 933072e..f08b948 100644
--- i/docs/formatdomain.html.in
+++ w/docs/formatdomain.html.in
@@ -536,7 +536,11 @@
         single host block device, if they are backed by files within
         the same host file system, which is why this tuning parameter
         is at the global domain level rather than associated with each
-        guest disk device.  Each <code>device</code> element has two
+        guest disk device  (contrast this to
+        the <a href="#elementsDisks"><code>&lt;iotune&gt;</code></a>
+        element which can apply to an
+        individual <code>&lt;disk&gt;</code>).
+        Each <code>device</code> element has two
         mandatory sub-elements, <code>path</code> describing the
         absolute path of the device, and <code>weight</code> giving
         the relative weight of that device, in the range [100,

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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