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    hi Timofei<br>
    <br>
    I don't have any specific use case, this issue is found while I am
    doing live migration testing, what I did is:<br>
    <br>
    1. create 2 compute node, <br>
    2. create a nfs service on one of compute node, let's say node-2 and
    expose /opt/stack/date/nova/instances <br>
    3. mount node-2:/opt/stack/date/nova/instances to node-1 's /mnt<br>
    4. specify /mnt as node-1's instance_dir so node-1 and node-2 have
    shared instance_dir(with different path)<br>
    5. live migration an instance and fail.<br>
    <br>
    <br>
    Thanks<br>
    Eli.<br>
    <br>
    <div class="moz-cite-prefix">On 2016年04月29日 19:52, Timofei Durakov
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAHsr+ixZk_jY3C-K9Fa+L8vbCxR_0iy0mtMF4H2kArxQQMRVYQ@mail.gmail.com"
      type="cite">
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      <div dir="ltr">Hi,
        <div><br>
          <div>From the first sight there are no restrictions for
            instance_path option. Could you please provide some details
            about the use case? </div>
        </div>
        <div>I wonder would this functionality be really useful for
          cloud-operators, or we just should add description to instance
          path option, forcing to use the same path on compute nodes?</div>
        <div><br>
        </div>
        <div>Timofey</div>
        <div><br>
        </div>
        <div><br>
        </div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Fri, Apr 29, 2016 at 4:47 AM, Eli
          Qiao <span dir="ltr"><<a moz-do-not-send="true"
              href="mailto:liyong.qiao@intel.com" target="_blank">liyong.qiao@intel.com</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote">
            <div> hi team,<br>
              <br>
              Is there any require that all compute node's instance_dir
              should be same?<br>
              <br>
              I recently get an issue while doing live migration with
              migrateToURI3 method of libvirt python interface, if<br>
              source and dest host are configured with difference
              instance_dir, migration will fail since migrateToURI3<br>
              requires a new xml, but we don't modified the instance_dir
              of dest xml.<br>
              <br>
              I reported a bug on [1]_ , would like to get confirmation
              before spend effort working on it.<br>
              <br>
              [1] <a moz-do-not-send="true"
                href="https://bugs.launchpad.net/nova/+bug/1576245"
                target="_blank">https://bugs.launchpad.net/nova/+bug/1576245</a><br>
              <br>
              Thanks.<span class="HOEnZb"><br>
                <pre cols="72">-- 

Best Regards, Eli Qiao (乔立勇)
Intel OTC China</pre>
              </span></div>
            <br>
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          </blockquote>
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    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Best Regards, Eli Qiao (乔立勇)</pre>
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