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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Hi,all<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The openstack was running on one server in my experiment. The VolumeGroup named ‘cinder-volumes‘ was comprised by a local disk partition whose name was ‘/dev/sda2’.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">A volume was created in the dashboard, and I tried to attach it to a running instance. However, the operation was failed.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The exception in nova/compute.log said that the disk bus ide could not be hotplugged.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">As known to all, the ide bus cannot be hotplugged to a running instance.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">It seems that the current version used the bus type ‘ide’ as the default one.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In this case, all the volumes created in the ‘cinder-volumes’ cannot be hotplugged into the running vm. You can never attach a volume to a suspend instance in the dashboard. There is no choice to this in the portal.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">How can I choose the type ‘virtio’ when the volume has been attached?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[root@localhost nova]# nova --version<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2.13.0<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[root@localhost nova]# uname -a<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Linux localhost 3.9.4-200.fc18.x86_64 #1 SMP Fri May 24 20:10:49 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[root@localhost nova]#<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;font-family:SimSun;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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