<div dir="ltr">If we have more than one live-migration occurring at a time, some will fail. Basically the concluding handshake won't complete. It's not clear if this is a contention issue, and issue in Juno (which has some well-documented messaging problems), or something else.<div><br></div><div>These issues occur when trying to use l-m to evac a node (of say 8 VMs). There really isn't a load consideration, it seems to solely be a messaging issue.</div><div><br></div><div>Workarounds: we were able to work-around this issue by doing a single live-migration at a time and ensuring it completes (is no longer marked as migrating) prior to initiating the next one. Resolved our issue completely but has the side-effect of taking a very long time. We have not bisected the problem to see if we can do more than that or do each migration for a given node singly but actually do more than one node at once. These are exercises we will undertake very soon.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jun 30, 2015 at 11:50 AM, Auld, Will <span dir="ltr"><<a href="mailto:will.auld@intel.com" target="_blank">will.auld@intel.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">We’d like to get a better handle on issues around live migration and I thought that all of you may be the most knowledgeable people.
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<p><u></u><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span>1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">In your own work do you see issues with live migration? What issues and how critical are they?
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<p><u></u><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span>2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">How frequently do these issues occur?
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<p><u></u><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><span>3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">What fixes or workarounds have you employed for these issues?<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Thanks,<span class="HOEnZb"><font color="#888888"><u></u><u></u></font></span></span></p><span class="HOEnZb"><font color="#888888">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Will<u></u><u></u></span></p>
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