[libvirt-users] Cannot find suitable CPU model for given data

Hello all, I have a new Sun fire X4140 server with two amd opteron 2435 CPUs running debian jessie, libvirt 1.2.9-3, virtinst 1.0.1-3, qemu/kvm 2.1. When attempting to create virtual machines (with --debug), I receive this: [Thu, 20 Nov 2014 13:56:36 virt-install 1842] DEBUG (cli:234) File "/usr/share/virt-manager/virt-install", line 876, in <module> sys.exit(main()) File "/usr/share/virt-manager/virt-install", line 870, in main start_install(guest, continue_inst, options) File "/usr/share/virt-manager/virt-install", line 588, in start_install fail(e, do_exit=False) File "/usr/share/virt-manager/virtinst/cli.py", line 234, in fail logging.debug("".join(traceback.format_stack())) [Thu, 20 Nov 2014 13:56:36 virt-install 1842] ERROR (cli:235) internal error: Cannot find suitable CPU model for given data [Thu, 20 Nov 2014 13:56:36 virt-install 1842] DEBUG (cli:237) Traceback (most recent call last): File "/usr/share/virt-manager/virt-install", line 560, in start_install dom = guest.start_install(meter=meter, noboot=options.noreboot) File "/usr/share/virt-manager/virtinst/guest.py", line 403, in start_install noboot) File "/usr/share/virt-manager/virtinst/guest.py", line 467, in _create_guest dom = self.conn.createLinux(start_xml or final_xml, 0) File "/usr/lib/python2.7/dist-packages/libvirt.py", line 3440, in createLinux if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) libvirtError: internal error: Cannot find suitable CPU model for given data [Thu, 20 Nov 2014 13:56:36 virt-install 1842] DEBUG (cli:248) Domain installation does not appear to have been successful. svm and svm_lock are present in /proc/cpuinfo, in the initial output of virt-install with --debug, it says it will use the proper cpu: <cpu mode="custom" match="exact"> <model>Opteron_G3</model> </cpu> I've tried using --cpu host, --cpu best, --cpu Opteron_G3, all fail with the same error. Anyone know what I can do here? I'd like to stick with KVM, but maybe Xen would work? I'm not sure if this error is coming from libvirt, or KVM itself. Thanks! mb
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mb