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<p class="MsoNormal"><span lang="EN-US">HI<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am an openstacker, when I used the latest libvirt and xen code to run the openstack. Can not create the vm.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">there is an error in libxl log, you can see the log:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Os : Ubuntu 12.10 <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">Compiled against library: libvirt 1.2.3<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Using library: libvirt 1.2.3<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Using API: Xen 1.2.3<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Running hypervisor: Xen 4.5.0<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">libxl: debug: libxl_create.c:1356:do_domain_create: ao 0x7f7894002810: create: how=(nil) callback=(nil) poller=0x7f7894001bb0<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvda spec.backend=tap<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">libxl: debug: libxl_device.c:210:disk_try_backend: Disk vdev=xvda, backend tap unsuitable because blktap not available<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">libxl: error: libxl_device.c:289:libxl__device_disk_set_backend: no suitable backend for disk xvda<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">libxl: debug: libxl_event.c:1739:libxl__ao_complete: ao 0x7f7894002810: complete, rc=-3<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">libxl: debug: libxl_create.c:1370:do_domain_create: ao 0x7f7894002810: inprogress: poller=0x7f7894001bb0, flags=ic<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">libxl: debug: libxl_event.c:1711:libxl__ao__destroy: ao 0x7f7894002810: destroy<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 blktap does work, and I also find the same error someone has posted, (<a href="http://www.redhat.com/archives/libvir-list/2013-February/msg01124.html">http://www.redhat.com/archives/libvir-list/2013-February/msg01124.html</a>)
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">When I change the type to “phy”, it also doesnot work. And try to change the type to other options, also does not work.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Can someone give me some suggestions?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks !<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 XML from the openstack is :<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><domain type="xen"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <uuid>9e9ed86c-8892-40da-acd1-31ec6303abfe</uuid><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <name>instance-00000001</name><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <memory>524288</memory><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <vcpu>1</vcpu><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <os><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <type>xen</type><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <kernel>/opt/stack/data/nova/instances/9e9ed86c-8892-40da-acd1-31ec6303abfe/kernel</kernel><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <initrd>/opt/stack/data/nova/instances/9e9ed86c-8892-40da-acd1-31ec6303abfe/ramdisk</initrd><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <cmdline>ro root=/dev/xvda</cmdline><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> </os><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <features><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <acpi/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <apic/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> </features><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <clock offset="utc"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <devices><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <disk type="file" device="disk"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <driver name="tap2" type="raw" cache="none"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <source file="/opt/stack/data/nova/instances/9e9ed86c-8892-40da-acd1-31ec6303abfe/disk"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <target bus="xen" dev="xvda"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> </disk><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <disk type="file" device="cdrom"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <driver name="tap2" type="raw" cache="none"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <source file="/opt/stack/data/nova/instances/9e9ed86c-8892-40da-acd1-31ec6303abfe/disk.config"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <target bus="ide" dev="xvdd"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> </disk><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <interface type="bridge"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <mac address="fa:16:3e:d8:c3:c0"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <source bridge="br100"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <filterref filter="nova-instance-instance-00000001-fa163ed8c3c0"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> </interface><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <console type="pty"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <graphics type="vnc" autoport="yes" keymap="en-us" listen="127.0.0.1"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <video><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <model type="xen"/><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> </video><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> </devices><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"></domain><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"><o:p> </o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;line-height:12.0pt"><span lang="EN-US" style="font-size:11.0pt;color:black">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal" align="left" style="text-align:left;line-height:12.0pt"><span lang="EN-US" style="font-size:11.0pt;color:black">Tian, Shuangtai
</span><span lang="EN-US" style="font-size:11.0pt;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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