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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>“Abusive usage” : If user can request anti-affinity VMs, then why doesn’t he uses that? This will result in user constantly requesting all his VMs being in the same anti-affinity group. This makes scheduler choose one physical host per VM. This will quickly flood the infrastructure and mess up with the objective of admin (e.g. Consolidation that regroup VM instead of spreading, spared hosts, etc) ; at some time it will be reported back that there is no host available, which appears as a bad experience for user. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></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 #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Ian Wells [mailto:ijw.ubuntu@cack.org.uk] <br><b>Envoyé :</b> mardi 8 avril 2014 01:02<br><b>À :</b> OpenStack Development Mailing List (not for usage questions)<br><b>Objet :</b> Re: [openstack-dev] [Nova] Hosts within two Availability Zones : possible or not ?<o:p></o:p></span></p></div></div><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><div><p class=MsoNormal>On 3 April 2014 08:21, Khanh-Toan Tran <<a href="mailto:khanh-toan.tran@cloudwatt.com" target="_blank">khanh-toan.tran@cloudwatt.com</a>> wrote:<o:p></o:p></p><div><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><p class=MsoNormal>Otherwise we cannot provide redundancy to client except using Region which<br>is dedicated infrastructure and networked separated and anti-affinity<br>filter which IMO is not pragmatic as it has tendency of abusive usage.<o:p></o:p></p></div></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I'm sorry, could you explain what you mean here by 'abusive usage'?<o:p></o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p></div><div><p class=MsoNormal>Ian.<o:p></o:p></p></div></div></div></div></div></body></html>