Comment 8 for bug 1428200

faced the same issue on 6.1 Centos, Neutron, 1 Controller 1 Compute

2015-03-16T09:54:24.027388+00:00 debug: Dynamic looping call <bound method Service.periodic_tasks of <nova.service.Service object at 0x3ad6150>> sleeping for 60.00 seconds
2015-03-16T09:55:24.029801+00:00 debug: Dynamic looping call <bound method Service.periodic_tasks of <nova.service.Service object at 0x3ad6150>> sleeping for 60.00 seconds
2015-03-16T09:55:39.135296+00:00 err: Error from last host: node-3.test.domain.local (node node-3.test.domain.local): [u'Traceback (most recent call last):\n', u' File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 2033, in _do_build_and_run_instance\n filter_properties)\n', u' File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 2164, in _build_and_run_instance\n instance_uuid=instance.uuid, reason=six.text_type(e))\n', u'RescheduledException: Build of instance 1b2f250b-b62c-45b1-a3c4-b3413a58b0e6 was re-scheduled: Failed to add interface: /usr/bin/nova-rootwrap:6: DeprecationWarning: The oslo namespace package is deprecated. Please use oslo_rootwrap instead.\n from oslo.rootwrap.cmd import main\ndevice vlan103 is already a member of a bridge; can\'t enslave it to bridge br103.\n\nTraceback (most recent call last):\n\n File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 137, in _dispatch_and_reply\n incoming.message))\n\n File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 180, in _dispatch\n return self._do_dispatch(endpoint, method, ctxt, args)\n\n File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 126, in _do_dispatch\n result = getattr(endpoint, method)(ctxt, **new_args)\n\n File "/usr/lib/python2.6/site-packages/nova/network/floating_ips.py", line 114, in allocate_for_instance\n **kwargs)\n\n File "/usr/lib/python2.6/site-packages/nova/network/manager.py", line 511, in allocate_for_instance\n requested_networks=requested_networks)\n\n File "/usr/lib/python2.6/site-packages/nova/network/manager.py", line 192, in _allocate_fixed_ips\n vpn=vpn, address=address)\n\n File "/usr/lib/python2.6/site-packages/nova/network/manager.py", line 1954, in allocate_fixed_ip\n self._setup_network_on_host(context, network)\n\n File "/usr/lib/python2.6/site-packages/nova/openstack/common/lockutils.py", line 272, in inner\n return f(*args, **kwargs)\n\n File "/usr/lib/python2.6/site-packages/nova/network/manager.py", line 2073, in _setup_network_on_host\n self._initialize_network(network)\n\n File "/usr/lib/python2.6/site-packages/nova/network/manager.py", line 1480, in _initialize_network\n self.l3driver.initialize_gateway(network)\n\n File "/usr/lib/python2.6/site-packages/nova/network/l3.py", line 105, in initialize_gateway\n gateway=(network_ref[\'gateway\'] is not None))\n\n File "/usr/lib/python2.6/site-packages/nova/network/linux_net.py", line 1403, in plug\n return _get_interface_driver().plug(network, mac_address, gateway)\n\n File "/usr/lib/python2.6/site-packages/nova/network/linux_net.py", line 1445, in plug\n network.get(\'mtu\'))\n\n File "/usr/lib/python2.6/site-packages/nova/network/linux_net.py", line 1488, in ensure_vlan_bridge\n LinuxBridgeInterfaceDriver.ensure_bridge(bridge, interface, net_attrs)\n\n File "/usr/lib/python2.6/site-packages/nova/openstack/common/lockutils.py", line 272, in inner\n return f(*args, **kwargs)\n\n File "/usr/lib/python2.6/site-packages/nova/network/linux_net.py", line 1567, in ensure_bridge\n raise exception.NovaException(msg)\n\nNovaException: Failed to add interface: /usr/bin/nova-rootwrap:6: DeprecationWarning: The oslo namespace package is deprecated. Please use oslo_rootwrap instead.\n from oslo.rootwrap.cmd import main\ndevice vlan103 is already a member of a bridge; can\'t enslave it to bridge br103.\n\n\n']
2015-03-16T09:56:24.033511+00:00 debug: Dynamic looping call <bound method Service.periodic_tasks of <nova.service.Service object at 0x3ad6150>> sleeping for 60.00 seconds