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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Igor,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The 3PAR can extend a share without loss of connectivity.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">markstur<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> yang, xing [mailto:xing.yang@emc.com]
<br>
<b>Sent:</b> Friday, May 22, 2015 3:43 PM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> Re: [openstack-dev] [Manila] Question to driver maintainers<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Igor,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">We can support extending a share without loss of connectivity, but we don’t support shrinking.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Xing<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif"> Jason Bishop [<a href="mailto:jason.bishop@gmail.com">mailto:jason.bishop@gmail.com</a>]
<br>
<b>Sent:</b> Thursday, May 21, 2015 8:14 PM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> Re: [openstack-dev] [Manila] Question to driver maintainers<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi Igor, Hitachi SOP drive can support share extending online without disruption.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">cheers<o:p></o:p></p>
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<p class="MsoNormal">jason<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, May 18, 2015 at 1:15 AM, Igor Malinovskiy <<a href="mailto:imalinovskiy@mirantis.com" target="_blank">imalinovskiy@mirantis.com</a>> wrote:<o:p></o:p></p>
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<p style="margin:0in;margin-bottom:.0001pt"><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:black">Hello, everyone!</span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:black">My letter is mainly addressed to driver maintainers, but could be interesting to everybody.</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:black">As you probably know, on Kilo midcycle meetup we discussed share resize functionality (extend and shrink) and I already have implemented 'extend'
API in Generic driver (<a href="https://review.openstack.org/182383/" target="_blank">https://review.openstack.org/182383/</a>). After implementation review we
</span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:black">noticed that some backends are able to resize a share without causing disruptions, but others might only be able to do it disruptively (Generic
driver case).</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:black">So I want to ask driver maintainers here:</span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><b><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:black">Will your driver be able to do share extending without loss of connectivity?</span></b><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:black">Depending on your answers, we will handle this situation differently.</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:black">Best regards,</span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:black">Igor Malinovskiy (IRC: u_glide)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:black">Manila Core Team</span><o:p></o:p></p>
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