A subnet-delete immediately after a port-delete may fail in multi-config-node setup

[Vedamurthy Joshi]

Build 1.10 7
This bug is for release-noting the behavior.

In a multi-config setup, A subnet-delete immediately after a port-delete may fail in multi-config-node setup saying that there are existing references to the subnet.
Users will have to retry when this happens.

2014-08-07 00:46:45,121 - INFO - Deleting subnet 804f1c1a-e106-47d6-89a5-abc37cd27912
2014-08-07 00:46:45,192 - ERROR - 409-{u'NeutronError': {u'message': u'Unable to complete operation on subnet 804f1c1a-e106-47d6-89a5-abc37cd27912. One or more ports have an IP allocation from this subnet.', u'type': u'ContrailConflictError', u'detail': u''}}
Traceback (most recent call last):
  File "scripts/neutron/test_crud.py", line 427, in _delete_subnet
    result = self.neutron_h.delete_subnet(subnet_id)
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 108, in with_params
    ret = self.function(instance, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 379, in delete_subnet
    return self.delete(self.subnet_path % (subnet))
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 1325, in delete
    headers=headers, params=params)
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 1314, in retry_request
    headers=headers, params=params)
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 1257, in do_request
    self._handle_fault_response(status_code, replybody)
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 1227, in _handle_fault_response
    exception_handler_v20(status_code, des_error_body)
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 93, in exception_handler_v20
    message=msg)
NeutronClientException: 409-{u'NeutronError': {u'message': u'Unable to complete operation on subnet 804f1c1a-e106-47d6-89a5-abc37cd27912. One or more ports have an IP allocation from this subnet.', u'type': u'ContrailConflictError', u'detail': u''}}

[Nagabhushana R (bhushana)]

no fix for r1.1, release note.

[Sachin Bansal (sbansal)]

Vedu,

Could you please let us know if this is reproducible in the latest code and if it is, then could you please provide api server logs?

Thanks,
Sachin