KVM live migration fails with libvirtError: internal error Cannot find suitable emulator for x86_64.

Issue

• Two physical hosts are using a shared GFS2 partition to share virtual KVM machines. After creating a virtual server on the first host and when trying to migrate it with virt-manager , getting the following error:

  Traceback (most recent call last):
    File "/usr/share/virt-manager/virtManager/migrate.py", line 423, in finish
      dsthost = destconn.get_qualified_hostname()
    File "/usr/share/virt-manager/virtManager/connection.py", line 334, in get_qualified_hostname
      virtinst.support.SUPPORT_CONN_GETHOSTNAME):
    File "/usr/lib/python2.6/site-packages/virtinst/support.py", line 502, in check_conn_support
      return _check_support(conn, feature, conn)
    File "/usr/lib/python2.6/site-packages/virtinst/support.py", line 389, in _check_support
      actual_drv_ver = _hv_ver(conn)
    File "/usr/lib/python2.6/site-packages/virtinst/support.py", line 325, in _hv_ver
      ret = cmd(*args)
    File "/usr/lib64/python2.6/site-packages/libvirt.py", line 1848, in getVersion
      if ret == -1: raise libvirtError ('virConnectGetVersion() failed', conn=self)
  libvirtError: internal error Cannot find suitable emulator for x86_64