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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => havana-3

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https://bugs.launchpad.net/bugs/1169026

Title:
  In Vlan mode can't create a network when --vlan option is not set

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  In Vlan mode when I tried to create a network without setting the
  --vlan mode, I got the DuplicateVlan exception.

  $ nova network-create --fixed-range-v4 192.168.3.1/24 net

  ERROR: The server has either erred or is incapable of performing the
  requested operation. (HTTP 500) (Request-ID: req-
  14c6c520-d6a4-4d6e-9280-3957091f4631)

  The log in the nova-network service is :

  2013-04-15 03:10:37    ERROR [nova.openstack.common.rpc.amqp] Exception during message handling
  Traceback (most recent call last):
    File "/opt/stack/nova/nova/openstack/common/rpc/amqp.py", line 430, in _process_data
      rval = self.proxy.dispatch(ctxt, version, method, **args)
    File "/opt/stack/nova/nova/openstack/common/rpc/dispatcher.py", line 133, in dispatch
      return getattr(proxyobj, method)(ctxt, **kwargs)
    File "/opt/stack/nova/nova/network/manager.py", line 1817, in create_networks
      self, context, vpn=True, **kwargs)
    File "/opt/stack/nova/nova/network/manager.py", line 1058, in create_networks
      return self._do_create_networks(context, **kwargs)
    File "/opt/stack/nova/nova/network/manager.py", line 1187, in _do_create_networks
      network = self.db.network_create_safe(context, net)
    File "/opt/stack/nova/nova/db/api.py", line 797, in network_create_safe
      return IMPL.network_create_safe(context, values)
    File "/opt/stack/nova/nova/db/sqlalchemy/api.py", line 96, in wrapper
      return f(*args, **kwargs)
    File "/opt/stack/nova/nova/db/sqlalchemy/api.py", line 2164, in network_create_safe
      raise exception.DuplicateVlan(vlan=values['vlan'])
  DuplicateVlan: Detected existing vlan with id 100
  2013-04-15 03:10:37    DEBUG [nova.openstack.common.rpc.amqp] Pool creating new connection
  2013-04-15 03:10:37     INFO [nova.openstack.common.rpc.common] Connected to AMQP server on localhost:5672
  2013-04-15 03:10:37    ERROR [nova.openstack.common.rpc.common] Returning exception Detected existing vlan with id 100 to caller
  2013-04-15 03:10:37    ERROR [nova.openstack.common.rpc.common] ['Traceback (most recent call last):\n', '  File "/opt/stack/nova/nova/openstack/common/rpc/amqp.py", line 430, in _process_data\n    rval = self.proxy.dispatch(ctxt, version, method, **args)\n', '  File "/opt/stack/nova/nova/openstack/common/rpc/dispatcher.py", line 133, in dispatch\n    return getattr(proxyobj, method)(ctxt, **kwargs)\n', '  File "/opt/stack/nova/nova/network/manager.py", line 1817, in create_networks\n    self, context, vpn=True, **kwargs)\n', '  File "/opt/stack/nova/nova/network/manager.py", line 1058, in create_networks\n    return self._do_create_networks(context, **kwargs)\n', '  File "/opt/stack/nova/nova/network/manager.py", line 1187, in _do_create_networks\n    network = self.db.network_create_safe(context, net)\n', '  File "/opt/stack/nova/nova/db/api.py", line 797, in network_create_safe\n    return IMPL.network_create_safe(context, values)\n', '  File "/opt/stack/nova/nova/db/sqlalchemy/api.py", line 96, in wrapper\n    return f(*args, **kwargs)\n', '  File "/opt/stack/nova/nova/db/sqlalchemy/api.py", line 2164, in network_create_safe\n    raise exception.DuplicateVlan(vlan=values[\'vlan\'])\n', 'DuplicateVlan: Detected existing vlan with id 100\n']

  This is because "vlan" is set to the default value 100, if the --vlan option isn't set.
  So I think we should make "vlan" an essential option to fix to bug.

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