I just hit this on Ubuntu 12.10 running trunk nova to try and spin up
nested kvm VMs:
# virsh capabilities
<capabilities>
<host>
<uuid>3d39c1b1-7f6a-5536-de6e-c450da2036c8</uuid>
<cpu>
<arch>i686</arch>
<model>qemu32</model>
<vendor>Intel</vendor>
<topology sockets='1' cores='1' threads='1'/>
<feature name='hypervisor'/>
<feature name='popcnt'/>
</cpu>
<power_management>
<suspend_mem/>
<suspend_disk/>
<suspend_hybrid/>
</power_management>
<migration_features>
<live/>
<uri_transports>
<uri_transport>tcp</uri_transport>
</uri_transports>
</migration_features>
<secmodel>
<model>apparmor</model>
<doi>0</doi>
</secmodel>
</host>
<guest>
<os_type>hvm</os_type>
<arch name='i686'>
<wordsize>32</wordsize>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<machine>pc-1.2</machine>
<machine>none</machine>
<machine canonical='pc-1.2'>pc</machine>
<machine>pc-1.1</machine>
<machine>pc-1.0</machine>
<machine>pc-0.15</machine>
<machine>pc-0.14</machine>
<machine>pc-0.13</machine>
<machine>pc-0.12</machine>
<machine>pc-0.11</machine>
<machine>pc-0.10</machine>
<machine>isapc</machine>
<domain type='qemu'>
</domain>
</arch>
<features>
<cpuselection/>
<deviceboot/>
<pae/>
<nonpae/>
<acpi default='on' toggle='yes'/>
<apic default='on' toggle='no'/>
</features>
</guest>
<guest>
<os_type>hvm</os_type>
<arch name='x86_64'>
<wordsize>64</wordsize>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<machine>pc-1.2</machine>
<machine>none</machine>
<machine canonical='pc-1.2'>pc</machine>
<machine>pc-1.1</machine>
<machine>pc-1.0</machine>
<machine>pc-0.15</machine>
<machine>pc-0.14</machine>
<machine>pc-0.13</machine>
<machine>pc-0.12</machine>
<machine>pc-0.11</machine>
<machine>pc-0.10</machine>
<machine>isapc</machine>
<domain type='qemu'>
</domain>
</arch>
<features>
<cpuselection/>
<deviceboot/>
<acpi default='on' toggle='yes'/>
<apic default='on' toggle='no'/>
</features>
</guest>
</capabilities>
2013-05-30 17:19:06,688.688 18123 ERROR nova.compute.manager
[req-a6ee869a-1875-4dd1-a832-1311cf208239 8a4a185b7a9f4256
92145162eef5a8da c82b41ffcf5e4d63bce6d2520b26dbf1] [instance:
fd55b74c-48b3-43ee-ad24-f20efaeb2b88] Error: ['Traceback
(most recent call last):\n', ' File
"/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/compute/manager.py",
line 949, in _build_instance\n set_access_ip=set_access_ip)\n', ' File
"/opt/stack/venvs/nova/local/lib/python2.7/
site-packages/nova/compute/manager.py", line 1154, in _spawn\n
LOG.exception(_(\'Instance failed to spawn\'), instan
ce=instance)\n', ' File "/usr/lib/python2.7/contextlib.py", line 24, in
__exit__\n self.gen.next()\n', ' File "/op
t/stack/venvs/nova/local/lib/python2.7/site-packages/nova/compute/manager.py",
line 1150, in _spawn\n block_device_i
nfo)\n', ' File
"/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/virt/libvirt/driver.py",
line 1534, in s
pawn\n block_device_info)\n', ' File
"/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/virt/libvirt/driver.py",
line 2451, in _create_domain_and_network\n domain =
self._create_domain(xml, instance=instance)\n', ' File
"/opt/stack/venvs/nova/local/lib/python2.7/site-packages/nova/virt/libvirt/driver.py",
line 2411, in _create_domain\n domain = self._conn.defineXML(xml)\n', '
File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 187, in doit\n
result = proxy_call(self._autowrap, f, *args, **kwargs)\n', ' File
"/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 147, in proxy_call\n
rv = execute(f,*args,**kwargs)\n', ' File
"/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 76, in tworker\n
rv = meth(*args,**kwargs)\n', ' File
"/usr/lib/python2.7/dist-packages/libvirt.py", line 2539, in defineXML\n if
ret is None:raise libvirtError(\'virDomainDefineXML() failed\', conn=self)\n',
"libvirtError: internal error no supported architecture for os type 'hvm'\n"]
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https://bugs.launchpad.net/bugs/1031063
Title:
internal error no supported architecture for os type 'hvm'
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