<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Thanks, Pawel!<div class=""><br class=""></div><div class="">—</div><div class="">Vlad<br class=""><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Nov 8, 2016, at 09:53, Koniszewski, Pawel <<a href="mailto:pawel.koniszewski@intel.com" class="">pawel.koniszewski@intel.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D" class="">Adding operators list, as it might be interesting for them. Please note that some of tested options are not available in nova, i.e., XBZRLE and postcopy-after-precopy.
Regarding postcopy, nova automatically decides whether live migration should be switched to postcopy mode (only if live_migration_permit_post_copy is set to True, by default it is set to False), postcopy-after-precopy is an internal virsh command which is
not exposed through the libvirt API.<o:p class=""></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D" class=""><o:p class=""> </o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D" class="">Kind Regards,<o:p class=""></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D" class="">Pawel Koniszewski<o:p class=""></o:p></span></p><p class="MsoNormal"><a name="_MailEndCompose" class=""><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D" class=""><o:p class=""> </o:p></span></a></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in" class=""><p class="MsoNormal"><a name="_____replyseparator" class=""></a><b class=""><span style="font-size:11.0pt;font-family:"Calibri",sans-serif" class="">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif" class=""> Vlad Nykytiuk [<a href="mailto:vnykytiuk@mirantis.com" class="">mailto:vnykytiuk@mirantis.com</a>]
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<b class="">Sent:</b> Monday, November 7, 2016 9:35 PM<br class="">
<b class="">To:</b> <a href="mailto:openstack-dev@lists.openstack.org" class="">openstack-dev@lists.openstack.org</a><br class="">
<b class="">Subject:</b> [openstack-dev] [nova] Live migrations: Post-Copy and Auto-Converge features research<o:p class=""></o:p></span></p>
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<div class=""><p class="MsoNormal" style="background:white"><span style="font-family:"Arial",sans-serif;color:#222222" class="">Hi,<o:p class=""></o:p></span></p>
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<div class=""><p class="MsoNormal" style="background:white"><span style="font-family:"Arial",sans-serif;color:#222222" class="">As you may know, currently </span><span style="font-size: 9pt; font-family: Verdana, sans-serif;" class="">QEMU</span><span style="font-family:"Arial",sans-serif;color:#222222" class=""> supports
several features that help live migrations to operate more predictively. These features are: auto-converge and post-copy. <o:p class=""></o:p></span></p>
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<div class=""><p class="MsoNormal" style="background:white"><span style="font-family:"Arial",sans-serif;color:#222222" class="">I made a research on performance characteristics of these two features, you can find it by the following link:<o:p class=""></o:p></span></p>
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<div class=""><p class="MsoNormal" style="background:white"><a href="https://rk4n.github.io/2016/08/10/qemu-post-copy-and-auto-converge-features/" class=""><span style="font-family:"Arial",sans-serif" class="">https://rk4n.github.io/2016/08/10/qemu-post-copy-and-auto-converge-features/</span></a><span style="font-family:"Arial",sans-serif;color:#222222" class=""><o:p class=""></o:p></span></p>
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<div class=""><p class="MsoNormal" style="background:white"><span style="font-family:"Arial",sans-serif;color:#222222" class="">Hope you find it helpful.<o:p class=""></o:p></span></p>
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<div class=""><p class="MsoNormal" style="background:white"><span style="font-family:"Arial",sans-serif;color:#222222" class=""><o:p class=""> </o:p></span></p>
</div><p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#222222;background:white" class="">Thanks</span><span style="font-family:"Arial",sans-serif;color:#222222" class=""><br clear="all" class="">
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<div class=""><p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#222222" class="">—</span><span style="font-family:"Arial",sans-serif;color:#222222" class=""><o:p class=""></o:p></span></p>
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<div class=""><p class="MsoNormal" style="background:white"><span style="font-family:"Arial",sans-serif;color:#222222" class="">Vlad<o:p class=""></o:p></span></p>
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<div class=""><p class="MsoNormal" style="background:white"><span style="font-family:"Arial",sans-serif;color:#222222" class=""><o:p class=""> </o:p></span></p>
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