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    Just an FYI.<br>
    <br>
    In my case the balloon driver was installed and it was running. The
    problem was eventually resolved by uninstalling the entire agent
    suite, rebooting and reinstalling it. Doing the same just for the
    balloon driver didn't work.<br>
    <br>
    regards,<br>
    John<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 13/11/14 07:35, John Gardeniers
      wrote:<br>
    </div>
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      I'm seeing it for a VM that most definitely does have the balloon
      driver installed. Care to take another guess?<br>
      <br>
      regards,<br>
      John<br>
      <br>
      <br>
      <div class="moz-cite-prefix">On 12/11/14 20:04, Amedeo Salvati
        wrote:<br>
      </div>
      <blockquote
        cite="mid:NEX57S$FF41F1ABF30BA1B34C2EA62F02151725@oscert.net"
        type="cite">
        <div class="xam_msg_class">
          <div style="font: normal 13px Arial; color:rgb(31, 28, 27);"><span
              dir="ltr"
              id="msgText_new_message_draft1415782711271_25745">you
              receive this error because on your cluster configurations
              you have checked "Enable Memory Balloon Optimization", and
              on some of your VMs there aren't balloon driver available;
              if you don't want anymore this warning messages you can
              uncheck this under <br>
              <br>
              Clusters -&gt; (select your cluster) edit -&gt;
              Optimization -&gt; uncheck Enable Memory Balloon
              Optimization<br>
              <br>
              Best Regards<br>
              Amedeo Salvati<br>
              <br>
              <br>
              Date: Wed, 12 Nov 2014 07:59:33 +0000<br>
              From: Karli Sj?berg <a moz-do-not-send="true"
                class="moz-txt-link-rfc2396E"
                href="mailto:Karli.Sjoberg@slu.se">&lt;Karli.Sjoberg@slu.se&gt;</a><br>
              To: <a moz-do-not-send="true"
                class="moz-txt-link-rfc2396E"
                href="mailto:tdemeter@itsmart.hu">"tdemeter@itsmart.hu"</a>
              <a moz-do-not-send="true" class="moz-txt-link-rfc2396E"
                href="mailto:tdemeter@itsmart.hu">&lt;tdemeter@itsmart.hu&gt;</a><br>
              Cc: <a moz-do-not-send="true"
                class="moz-txt-link-rfc2396E"
                href="mailto:users@ovirt.org">"users@ovirt.org"</a> <a
                moz-do-not-send="true" class="moz-txt-link-rfc2396E"
                href="mailto:users@ovirt.org">&lt;users@ovirt.org&gt;</a><br>
              Subject: Re: [ovirt-users] Balloon driver unavailable<br>
              Message-ID:
              &lt;5F9E965F5A80BC468BE5F40576769F099DF97243@exchange2-1&gt;<br>
              Content-Type: text/plain; charset="utf-8"<br>
              <br>
              On Wed, 2014-11-12 at 08:35 +0100, Demeter Tibor wrote:<br>
              &gt; Hi,<br>
              &gt; <br>
              &gt; <br>
              &gt; I have a lot of centos 6 based vms and I have install
              "ovirt guest<br>
              &gt; agent" for those vms. <br>
              &gt; But two vm always say "The balloon driver on xxxvm on
              hostX is<br>
              &gt; requested but unavailable"<br>
              &gt; I did check the virtio_balloon module are loaded on
              vms.<br>
              &gt; <br>
              &gt; <br>
              &gt; Anybody can me help?<br>
              &gt; <br>
              &gt; <br>
              &gt; Thanks in advance<br>
              &gt; <br>
              &gt; <br>
              &gt; Tibor<br>
              <br>
              &gt; I see that too, but only on Windows 2008 R2 guests...
              No one else ever<br>
              &gt; said anything about it, so I thought it was just me:)<br>
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