Open Stack

On Wed, Sep 10, 2014 at 6:00 AM, Ehsan Qarekhani <qarekhani at gmail.com>
wrote:

> 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
>


I think this has to do with spoofing protection. From the code:
This filter protects false positives on IPv6 Duplicate Address
Detection(DAD).

Any chance you're reusing IP addresses?

Anne


> P.S
> i am using nova-network instead of neutron.
>
> tanks in advance.
>
>
>
>
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