<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">Hi Greg,</div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">Have you actually filed a blueprint or specs for this in glance?</div><div class="gmail_default" style="font-family:verdana,sans-serif">If yes could you please provide a reference for the same.</div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif"><br clear="all"></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Thanks & Best Regards,<br><br></div>Abhishek Kekane<br></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr">On Thu, Oct 4, 2018 at 12:34 AM Waines, Greg <<a href="mailto:Greg.Waines@windriver.com">Greg.Waines@windriver.com</a>> wrote:<br></div><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">Glance Team,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I am following up on discussions in the edge-computing PTG meetings.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">There were discussions on potential enhancements to Glance API Caching for support of the proposed MVP Edge Architecture.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">And I took the action to write up a blueprint and a specification for these enhancements ... and will follow up with implementation.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I thought I’d start the discussions on the mailing list ... and if everyone is still in agreement,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">then I’ll move the high-level definition/requirements to Glance’s Launchpad (or Storyboard?) and<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">write up a Glance spec and review it in Gerrit.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal" style="margin-left:.5in"><b><u><span style="font-size:11.0pt">THE PROPOSAL:<u></u><u></u></span></u></b></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt">Enhance Glance API Caching such that
<u></u><u></u></span></p>
<p class="m_4283397071727045102MsoListParagraph" style="margin-left:1.0in">
<u></u><span style="font-size:11.0pt"><span>a)<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt">It works between two Glance Services (i.e. Glance at a Central OpenStack Cloud and Glance at an Edge OpenStack Cloud)<u></u><u></u></span></p>
<p class="m_4283397071727045102MsoListParagraph" style="margin-left:1.5in">
<u></u><span style="font-size:11.0pt;font-family:Symbol"><span>·<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt">i.e. current Glance API Caching only works with external webservers<u></u><u></u></span></p>
<p class="m_4283397071727045102MsoListParagraph" style="margin-left:1.0in">
<u></u><span style="font-size:11.0pt"><span>b)<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt">Enable the Edge Cloud Glance API Caching to support the ability to locally use those cached images (e.g. nova boot ...)<br>
even when network connectivity is lost to the Central Cloud Glance Service<u></u><u></u></span></p>
<p class="m_4283397071727045102MsoListParagraph" style="margin-left:1.5in">
<u></u><span style="font-size:11.0pt;font-family:Symbol"><span>·<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt">i.e. image meta-data is required in order to service a ‘nova boot ...’, and<br>
today image meta-data is NOT cached by Glance API Caching.<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt">The proposed solution should generically work between any two Glance Services.<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt">e.g.
<u></u><u></u></span></p>
<p class="m_4283397071727045102MsoListParagraph" style="margin-left:1.0in">
<u></u><span style="font-size:11.0pt;font-family:Symbol"><span>·<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt">in a Multi-Region Environment,
<u></u><u></u></span></p>
<p class="m_4283397071727045102MsoListParagraph" style="margin-left:1.0in">
<u></u><span style="font-size:11.0pt;font-family:Symbol"><span>·<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt">in a StarlingX Distributed Cloud,<u></u><u></u></span></p>
<p class="m_4283397071727045102MsoListParagraph" style="margin-left:1.0in">
<u></u><span style="font-size:11.0pt;font-family:Symbol"><span>·<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt">etc.<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt">The proposed solution need only deal with the Edge Cloud Glance talking to a single Central Cloud Glance.<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Let me know if you have any a questions or comments,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Greg.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">p.s.<u></u><u></u></span></p>
<p class="MsoNormal"><u><span style="font-size:11.0pt">Background:<u></u><u></u></span></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt">More info on the edge-computing group’s MVP Edge Architecture can be found here:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> <a href="https://www.dropbox.com/s/255x1cao14taer3/MVP-Architecture_edge-computing_PTG.pptx?dl=0" target="_blank">
https://www.dropbox.com/s/255x1cao14taer3/MVP-Architecture_edge-computing_PTG.pptx?dl=0</a>
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">and<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> <a href="https://docs.google.com/document/d/1Mq6bSm_lES56S4gygEuhmMbEeCI2nBFl_U5vl50wih8/edit?ts=5baa654e#heading=h.ncllqse6iw0u" target="_blank">
https://docs.google.com/document/d/1Mq6bSm_lES56S4gygEuhmMbEeCI2nBFl_U5vl50wih8/edit?ts=5baa654e#heading=h.ncllqse6iw0u</a>
<u></u><u></u></span></p>
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