Why are KVM guests failing to boot with XML errors?

Solution Verified - Updated -

Issue

  • Virtual machine fail to run with following error message:
[root@xyz qemu]# virsh start abc
error: Failed to start domain abc
error: XML error: missing security model when using multiple labels.
  • From libvirtd.log;
2013-10-22 15:59:30.373+0000: 19222: error : qemuAutostartDomain:276 : Failed to autostart VM 'abc': XML error: missing security model when using multiple labels
  • virt-manager logs:
Tue, 22 Oct 2013 19:58:26 virt-manager 14476] DEBUG (error:80) dialog message: Error restoring domain: XML error: missing security model when using multiple labels : Error restoring domain: XML error: missing security model when using multiple labels

    Traceback (most recent call last):
      File "/usr/share/virt-manager/virtManager/asyncjob.py", line 44, in cb_wrapper
        callback(asyncjob, *args, **kwargs)
      File "/usr/share/virt-manager/virtManager/asyncjob.py", line 65, in tmpcb
        callback(*args, **kwargs)
      File "/usr/share/virt-manager/virtManager/domain.py", line 1063, in startup
        self._backend.create()
      File "/usr/lib64/python2.6/site-packages/libvirt.py", line 678, in create
        if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
    libvirtError: XML error: missing security model when using multiple labels

Environment

  • Red Hat Enterprise Linux 6.4
  • SElinux in permissive mode

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