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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I was testing <a name="elementsHostDev">Host device assignment</a> in OpenStack environment where the driver name is vfio or kvm.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My setup is as follow: <o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]><span dir="LTR"></span>Fedora 21<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]><span dir="LTR"></span>Libvirt 1.3.0 which I compiled<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]><span dir="LTR"></span>OpenStack master <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have also other setups with older Libvirt version and the same OpenStack environment.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I notice that on my fedora environment the driver name is vfio were in my old environment the driver name is kvm.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">According to Libvirt documentation default is "vfio" on systems where the VFIO driver is available and loaded, see [1]<o:p></o:p></p>
<p class="MsoNormal">I remove the vfio modules by removing vfio, vfio_iommu_type1, vfio_pci but when I boot a vm the drive name is vfio<o:p></o:p></p>
<p class="MsoNormal">How can change the driver name to be kvm?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Another thing that I encounter is an error when suspending VM (in OpenStack environment) when the driver name is vfio.<o:p></o:p></p>
<p class="MsoNormal">In such case I am getting the following error from Libvirt:<o:p></o:p></p>
<p class="MsoNormal">2016-03-28 11:42:59.527 1966 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib64/python2.7/site-packages/libvirt.py", line 560, in attachDeviceFlags<o:p></o:p></p>
<p class="MsoNormal">2016-03-28 11:42:59.527 1966 ERROR oslo_messaging.rpc.dispatcher if ret == -1: raise libvirtError ('virDomainAttachDeviceFlags() failed', dom=self)<o:p></o:p></p>
<p class="MsoNormal">2016-03-28 11:42:59.527 1966 ERROR oslo_messaging.rpc.dispatcher libvirtError: internal error: unable to execute QEMU command 'device_add': Device initialization failed.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I would appreciate for some pointers on what can cause this issue.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">[1] <a href="https://libvirt.org/formatdomain.html#elementsHostDev">
https://libvirt.org/formatdomain.html#elementsHostDev</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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