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[Bug 1187244] Re: quantum NetworkDuplicated error , when boot a vm with two port id which belongs to the same network .

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Armando Migliaccio <1187244@xxxxxxxxxxxxxxxxxx>
Date: Tue, 29 Oct 2013 18:53:43 -0000
Reply-to: Bug 1187244 <1187244@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
I would ask myself the following questions:

- Is it possible to have multiple logical segments (i.e. subnets) on the
same physical segment (i.e. l2 broadcast domain)? Of course it is; is
good or common network engineering practice? Probably not;

- Can this model be replicated in a cloud environment? Of course it can;
would it make sense? Probably yes.

However, can this be done differently? I mean, if you created two
logical networks A and B, with a single subnet S1 and S2 respectively
wouldn't you achieve the same result? Is just the cost of creating the
extra logical network that's stopping you? I think it's legitimate to
lift this constraint, but then all sorts of issues may arise.

For example, if you now have Node A and Node B on the same logical
network but sitting on different subnets they wouldn't be able to talk
to each other if not via a router; this sounds like a complication that
can be avoided in, at least in the logical space.

** Changed in: nova
       Status: New => Opinion

** Changed in: nova
   Importance: Undecided => Wishlist

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https://bugs.launchpad.net/bugs/1187244

Title:
  quantum NetworkDuplicated error ,when boot a vm with two port id which
  belongs to the same network .

Status in OpenStack Compute (Nova):
  Opinion

Bug description:
  in /var/log/nova/nova-api.log

  ```
  013-06-04 12:01:17.998 ERROR nova.api.openstack [req-ea58ab37-aea6-40a4-b85f-2ab19285101e 5d45600dae844064b514f1549fe0dab9 b082fcb819db4104bb6d3dc18bcc4f17] Caught error: Network 5332f0f7-3156-4961-aa67-0b8507265fa5 is duplicated.
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack Traceback (most recent call last):
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/__init__.py", line 81, in __call__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     return req.get_response(self.application)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1296, in send
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     application, catch_exc_info=False)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1260, in call_application
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     app_iter = application(self.environ, start_response)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     return resp(environ, start_response)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/keystoneclient/middleware/auth_token.py", line 450, in __call__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     return self.app(env, start_response)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     return resp(environ, start_response)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     return resp(environ, start_response)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     return resp(environ, start_response)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/routes/middleware.py", line 131, in __call__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     response = self.app(environ, start_response)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     return resp(environ, start_response)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     resp = self.call_func(req, *args, **self.kwargs)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     return self.func(req, *args, **kwargs)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/wsgi.py", line 890, in __call__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     content_type, body, accept)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/wsgi.py", line 942, in _process_stack
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     action_result = self.dispatch(meth, request, action_args)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/wsgi.py", line 1022, in dispatch
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     return method(req=request, **action_args)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/compute/servers.py", line 898, in create
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     scheduler_hints=scheduler_hints)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/hooks.py", line 85, in inner
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     rv = f(*args, **kwargs)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 962, in create
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     scheduler_hints=scheduler_hints)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 676, in _create_instance
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     reservation_id, scheduler_hints)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 634, in _validate_and_provision_instance
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     QUOTAS.rollback(context, quota_reservations)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     self.gen.next()
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 522, in _validate_and_provision_instance
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     self._check_requested_networks(context, requested_networks)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 358, in _check_requested_networks
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     self.network_api.validate_networks(context, requested_networks)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack   File "/usr/lib/python2.7/dist-packages/nova/network/quantumv2/api.py", line 454, in validate_networks
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack     raise exception.NetworkDuplicated(network_id=net_id)
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack NetworkDuplicated: Network 5332f0f7-3156-4961-aa67-0b8507265fa5 is duplicated.
  2013-06-04 12:01:17.998 2741 TRACE nova.api.openstack 
  2013-06-04 12:01:18.126 INFO nova.api.openstack [req-ea58ab37-aea6-40a4-b85f-2ab19285101e 5d45600dae844064b514f1549fe0dab9 b082fcb819db4104bb6d3dc18bcc4f17] http://172.16.136.111:8774/v2/b082fcb819db4104bb6d3dc18bcc4f17/os-volumes_boot returned with HTTP 500
  2013-06-04 12:01:18.129 INFO nova.osapi_compute.wsgi.server [req-ea58ab37-aea6-40a4-b85f-2ab19285101e 5d45600dae844064b514f1549fe0dab9 b082fcb819db4104bb6d3dc18bcc4f17] 172.16.136.111 "POST /v2/b082fcb819db4104bb6d3dc18bcc4f17/os-volumes_boot HTTP/1.1" status: 500 len: 335 time: 0.4138958
  ```

  how to reproduce this error

  we need two subnets which belongs to one network 
  in my environment,
  network id is 5332f0f7-3156-4961-aa67-0b8507265fa5
  subnet1 id is e8a9be74-2f39-4d7e-9287-c5b85b573cca
  subnet2 id is dca45033-e506-42e4-bf05-aaccd0591c55 

  1. create ports  from subnet1 and subnet2

  quantum port-create --fixed-ip subnet_id=e8a9be74-2f39-4d7e-9287-c5b85b573cca  5332f0f7-3156-4961-aa67-0b8507265fa5
  port id is :  dca1f741-a1fc-444c-b764-7aa74ed29d1f

  quantum port-create --fixed-ip subnet_id=dca45033-e506-42e4-bf05-aaccd0591c55  5332f0f7-3156-4961-aa67-0b8507265fa5
  port id is : 72acaba1-6e84-468b-b3f7-52eb89972eb7

  2. boot with two port id

  nova boot --flavor 1 --nic port-id=dca1f741-a1fc-
  444c-b764-7aa74ed29d1f  --nic port-id=72acaba1-6e84-468b-
  b3f7-52eb89972eb7 --block_device_mapping vda=1cf2a0b0-8c7f-4de1-8dba-
  91bae1f1856c:::0 m1

  ERROR: The server has either erred or is incapable of performing the
  requested operation. (HTTP 500) (Request-ID: req-ea58ab37-aea6-40a4
  -b85f-2ab19285101e)

  it returns an error , and there is a NetworkDuplicated error  in
  /var/log/nova/nova-api.log


  i refered this bug https://bugs.launchpad.net/nova/+bug/1165088 , but
  it no helps .

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