<div dir="auto"><div>Geeg,<div dir="auto"><br></div><div dir="auto">Glance uses launchpad for blueprints and for specs you can refer to glance-specs repo.</div><div dir="auto"><br></div>Thank you,</div><div dir="auto"><br></div><div dir="auto">Abhishek<br><br><div class="gmail_quote" dir="auto"><div dir="ltr">On Thu 4 Oct, 2018, 16:14 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;font-family:Calibri">I have not yet done a blueprint or spec for this in Glance.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">But can do that now.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Is Glance using Launchpad or Storyboard ?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Greg.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-family:Calibri;color:black">From: </span>
</b><span style="font-family:Calibri;color:black">Abhishek Kekane <<a href="mailto:akekane@redhat.com" target="_blank" rel="noreferrer">akekane@redhat.com</a>><br>
<b>Reply-To: </b>"<a href="mailto:openstack-dev@lists.openstack.org" target="_blank" rel="noreferrer">openstack-dev@lists.openstack.org</a>" <<a href="mailto:openstack-dev@lists.openstack.org" target="_blank" rel="noreferrer">openstack-dev@lists.openstack.org</a>><br>
<b>Date: </b>Thursday, October 4, 2018 at 2:08 AM<br>
<b>To: </b>"<a href="mailto:openstack-dev@lists.openstack.org" target="_blank" rel="noreferrer">openstack-dev@lists.openstack.org</a>" <<a href="mailto:openstack-dev@lists.openstack.org" target="_blank" rel="noreferrer">openstack-dev@lists.openstack.org</a>><br>
<b>Subject: </b>Re: [openstack-dev] [glance] Glance API Caching Enhancements for Edge Computing<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><span style="font-family:Verdana">Hi Greg,<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-family:Verdana"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-family:Verdana">Have you actually filed a blueprint or specs for this in glance?<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-family:Verdana">If yes could you please provide a reference for the same.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-family:Verdana"><u></u> <u></u></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Thanks & Best Regards,<u></u><u></u></p>
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<p class="MsoNormal">Abhishek Kekane<u></u><u></u></p>
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<p class="MsoNormal">On Thu, Oct 4, 2018 at 12:34 AM Waines, Greg <<a href="mailto:Greg.Waines@windriver.com" target="_blank" rel="noreferrer">Greg.Waines@windriver.com</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Glance Team,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I am following up on discussions in the edge-computing PTG meetings.</span><u></u><u></u></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.</span><u></u><u></u></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.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><u></u><u></u></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,</span><u></u><u></u></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</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt">write up a Glance spec and review it in Gerrit.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><u></u><u></u></p>
<p class="MsoNormal" style="margin-left:.5in">
<b><u><span style="font-size:11.0pt">THE PROPOSAL:</span></u></b><u></u><u></u></p>
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<span style="font-size:11.0pt"> </span><u></u><u></u></p>
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<span style="font-size:11.0pt">Enhance Glance API Caching such that </span><u></u><u></u></p>
<p class="m_-780856726749522747m4283397071727045102msolistparagraph" style="margin-left:1.0in"><span style="font-size:11.0pt">a)</span><span style="font-size:7.0pt">
</span><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)</span><u></u><u></u></p>
<p class="m_-780856726749522747m4283397071727045102msolistparagraph" style="margin-left:1.5in"><span style="font-size:11.0pt;font-family:Symbol">·</span><span style="font-size:7.0pt">
</span><span style="font-size:11.0pt">i.e. current Glance API Caching only works with external webservers</span><u></u><u></u></p>
<p class="m_-780856726749522747m4283397071727045102msolistparagraph" style="margin-left:1.0in"><span style="font-size:11.0pt">b)</span><span style="font-size:7.0pt">
</span><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</span><u></u><u></u></p>
<p class="m_-780856726749522747m4283397071727045102msolistparagraph" style="margin-left:1.5in"><span style="font-size:11.0pt;font-family:Symbol">·</span><span style="font-size:7.0pt">
</span><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.</span><u></u><u></u></p>
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<span style="font-size:11.0pt"> </span><u></u><u></u></p>
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<span style="font-size:11.0pt">The proposed solution should generically work between any two Glance Services.</span><u></u><u></u></p>
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<span style="font-size:11.0pt">e.g. </span><u></u><u></u></p>
<p class="m_-780856726749522747m4283397071727045102msolistparagraph" style="margin-left:1.0in"><span style="font-size:11.0pt;font-family:Symbol">·</span><span style="font-size:7.0pt">
</span><span style="font-size:11.0pt">in a Multi-Region Environment, </span><u></u><u></u></p>
<p class="m_-780856726749522747m4283397071727045102msolistparagraph" style="margin-left:1.0in"><span style="font-size:11.0pt;font-family:Symbol">·</span><span style="font-size:7.0pt">
</span><span style="font-size:11.0pt">in a StarlingX Distributed Cloud,</span><u></u><u></u></p>
<p class="m_-780856726749522747m4283397071727045102msolistparagraph" style="margin-left:1.0in"><span style="font-size:11.0pt;font-family:Symbol">·</span><span style="font-size:7.0pt">
</span><span style="font-size:11.0pt">etc.</span><u></u><u></u></p>
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<span style="font-size:11.0pt"> </span><u></u><u></u></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.</span><u></u><u></u></p>
<p class="MsoNormal" style="margin-left:.5in">
<span style="font-size:11.0pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Let me know if you have any a questions or comments,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Greg.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt">p.s.</span><u></u><u></u></p>
<p class="MsoNormal"><u><span style="font-size:11.0pt">Background:</span></u><u></u><u></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:</span><u></u><u></u></p>
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<a href="https://www.dropbox.com/s/255x1cao14taer3/MVP-Architecture_edge-computing_PTG.pptx?dl=0" target="_blank" rel="noreferrer">
https://www.dropbox.com/s/255x1cao14taer3/MVP-Architecture_edge-computing_PTG.pptx?dl=0</a>
</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt">and</span><u></u><u></u></p>
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<a href="https://docs.google.com/document/d/1Mq6bSm_lES56S4gygEuhmMbEeCI2nBFl_U5vl50wih8/edit?ts=5baa654e#heading=h.ncllqse6iw0u" target="_blank" rel="noreferrer">
https://docs.google.com/document/d/1Mq6bSm_lES56S4gygEuhmMbEeCI2nBFl_U5vl50wih8/edit?ts=5baa654e#heading=h.ncllqse6iw0u</a>
</span><u></u><u></u></p>
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