Open Stack

Hi
I have some weird problem with nova-compute .
in one of my nodes nova compute refuse to create instance whit this error


 Traceback (most recent call last):
   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line
1329, in _build_instance
      set_access_ip=set_access_ip)
   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line
393, in decorated_function
     return function(self, context, *args, **kwargs)
   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line
1741, in _spawn
     LOG.exception(_('Instance failed to spawn'), instance=instance)
   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py",
line 68, in __exit__
     six.reraise(self.type_, self.value, self.tb)
   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line
1738, in _spawn
     block_device_info)
   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py",
line 2287, in spawn
     block_device_info)
   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py",
line 3709, in _create_domain_and_network
     network_info)
   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/firewall.py",
line 285, in setup_basic_filtering
     self.nwfilter.setup_basic_filtering(instance, network_info)
   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/firewall.py",
line 113, in setup_basic_filtering
     self._ensure_static_filters()
   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/firewall.py",
line 213, in _ensure_static_filters
     self._define_filter(self.nova_no_nd_reflection_filter)
   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/firewall.py",
line 233, in _define_filter
     self._conn.nwfilterDefineXML(xml)
   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 179, in
doit
     result = proxy_call(self._autowrap, f, *args, **kwargs)
   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 139, in
proxy_call
     rv = execute(f,*args,**kwargs)
   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 77, in
tworker
     rv = meth(*args,**kwargs)
   File "/usr/lib/python2.7/dist-packages/libvirt.py", line 3836, in
nwfilterDefineXML
    if ret is None:raise libvirtError('virNWFilterDefineXML() failed', conn
=self)
 libvirtError: operation failed: filter 'nova-no-nd-reflection' already
exists with uuid 89637f16-774a-4b8c-857b-08819c6fcf41

P.S
i am using nova-network instead of neutron.

tanks in advance.
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