<div dir="ltr">In the rush to get the code posted concurrently with the paper submission, we missed this. It should be BSD licensed; that is our legal department's license of choice. Other licenses are possible, just not quickly ;)<div>
<br></div><div>Our main intent here is to get the code and ideas out, so the licensing was a complete oversight.<br><div style> -nld</div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, May 16, 2013 at 5:00 PM, Jeremy Hanmer <span dir="ltr"><<a href="mailto:jeremy.hanmer@dreamhost.com" target="_blank">jeremy.hanmer@dreamhost.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Any chance the license could get updated to something that would encourage contributions?</div><div class="HOEnZb">
<div class="h5"><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, May 16, 2013 at 2:16 PM, Tim Bell <span dir="ltr"><<a href="mailto:Tim.Bell@cern.ch" target="_blank">Tim.Bell@cern.ch</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-GB" link="blue" vlink="purple"><div><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">Poncho would be my nomination for best project name, although Ironic deserves a special award also..<u></u><u></u></span></p>
<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">Looks very interesting …<u></u><u></u></span></p>
<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">Tim<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><div style="border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt">
<div><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> Narayan Desai [mailto:<a href="mailto:narayan.desai@gmail.com" target="_blank">narayan.desai@gmail.com</a>] <br>
<b>Sent:</b> 16 May 2013 22:52<br><b>To:</b> Tim Bell<br><b>Cc:</b> <a href="mailto:openstack-operators@lists.openstack.org" target="_blank">openstack-operators@lists.openstack.org</a>; Scott Devoid; Lorin Hochstein<br><b>Subject:</b> Re: [Openstack-operators] Graceful VM shutdown<u></u><u></u></span></p>
</div></div><p class="MsoNormal"><u></u> <u></u></p><div><p class="MsoNormal">We (Scott Devoid, Lorin Hochstein, and myself) have built something to help with this class of problem, and submitted a paper to LISA about it. The paper is still under review, but the code is already up on github. We'd love feedback on the code or approach. <u></u><u></u></p>
<div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Our basic goal here was to start working with a user-annotated approach for load-shedding, which will open the door to a bunch of really interesting resource management techniques and reducing the impact of basic system operations tasks.<u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">The code is called poncho (since we needed it to deal with our "full cloud" ;) and is available here:<u></u><u></u></p></div><div>
<p class="MsoNormal"><a href="https://github.com/magellancloud/poncho" target="_blank">https://github.com/magellancloud/poncho</a><u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">
It is definitely still under development, but we hope that it will prove out the concepts before we try to build a version that would be suitable for integration into openstack.<u></u><u></u></p></div><div><p class="MsoNormal">
<u></u> <u></u></p></div><div><p class="MsoNormal">I've attached a preprint of the paper to this mail.<u></u><u></u></p></div><div><p class="MsoNormal"> -nld<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div></div><div><p class="MsoNormal" style="margin-bottom:12.0pt"><u></u> <u></u></p><div><div><p class="MsoNormal">On Thu, May 16, 2013 at 1:02 PM, Tim Bell <<a href="mailto:Tim.Bell@cern.ch" target="_blank">Tim.Bell@cern.ch</a>> wrote:<u></u><u></u></p>
</div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"><div><div><div><div><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">
I am interested to see how other service providers handle the cases where there is a need to reboot a hypervisor but it is planned (such as a reboot after OS patching).<u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">We do not want to do live or block migration for these cases as there is no shared storage and block migration can be a bit unreliable at times.<u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">In my ideal case, we would be able to warn the VMs in some way so they can do a reasonable job of shutting down. In some cases, our users would like many minutes of notice to complete their current transaction.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">Does anyone know of a standard mechanism for hypervisor communicating to the guest to warn of an impending shutdown ?<u></u><u></u></p><p class="MsoNormal"><span style="color:#888888"> <u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#888888">Tim<u></u><u></u></span></p><p class="MsoNormal"><span style="color:#888888"> <u></u><u></u></span></p></div></div></div></div><p class="MsoNormal" style="margin-bottom:12.0pt">
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