[Pacemaker] Resource capacity limit

[Yan Gao]

Hi again,

Yan Gao wrote:
> Hi Lars,
> Thanks for the great suggestions!
> 
> Lars Marowsky-Bree wrote:
>> On 2009-10-30T19:41:35, Yan Gao <ygao at novell.com> wrote:
>>> Configuration example:
>>>
>>> node yingying \
>>> 	attributes capacity="100"
>>> primitive dummy0 ocf:heartbeat:Dummy \
>>> 	meta weight="90" priority="2"
>>> primitive dummy1 ocf:heartbeat:Dummy \
>>> 	meta weight="60" priority="1"
>>> ..
>>> property $id="cib-bootstrap-options" \
>>> 	limit-capacity="true"
>> First, I would prefer not to contaminate the regular node attribute
>> namespace; the word "capacity" might already be used. Second, the
>> "weight" is just one dimension, which is somewhat difficult.
>>
>> I'd propose to introduce a new XML element, "resource_utilization" (name
>> to be decided ;-) containing a "nvset", and which can be used in a node
>> element or a resource primitive.
>>
>> This creates a new namespace, avoiding clashes, and distinguishes the
>> utilization parameters from the other various attributes.
>>
>> Further, it trivially allows for several user-defined metrics.
> Right, great idea! I'll try to implement it if Andrew is OK with that either:)
> 
Done and attached.

XML sample:
..
    <nodes>
      <node id="yingying" type="normal" uname="yingying">
        <utilization id="nodes-yingying-utilization">
          <nvpair id="nodes-yingying-memory" name="memory" value="150"/>
          <nvpair id="nodes-yingying-cpu" name="cpu" value="1"/>
        </utilization>
      </node>
    </nodes>
..
    <resources>
      <primitive class="ocf" id="Dummy0" provider="heartbeat" type="Dummy">
        <utilization id="Dummy0-utilization">
          <nvpair id="Dummy0-utilization-memory" name="memory" value="90"/>
          <nvpair id="Dummy0-utilization-cpu" name="cpu" value="1"/>
        </utilization>
      </primitive>
      <primitive class="ocf" id="Dummy1" provider="heartbeat" type="Dummy">
        <utilization id="Dummy1-utilization">
          <nvpair id="Dummy1-utilization-memory" name="memory" value="60"/>
          <nvpair id="Dummy1-utilization-cpu" name="cpu" value="1"/>
        </utilization>
      </primitive>
    </resources>
..

Please kindly review it...
Any suggestions are appreciated!

Thanks,
  Yan
-- 
ygao at novell.com
Software Engineer
China Server Team, OPS Engineering

Novell, Inc.
Making IT Work As One™
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