Invalid input for operation: GRE networks are not enabled.

The server.log shows the below:

2012-12-12 11:09:33 DEBUG [amqplib] using channel_id: 1
2012-12-12 11:09:33 DEBUG [amqplib] Channel open
2012-12-12 11:09:33 ERROR [quantum.api.v2.resource] create failed
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/quantum/api/v2/resource.py", line 95, in resource
    result = method(request=request, **args)
  File "/usr/lib/python2.7/dist-packages/quantum/api/v2/base.py", line 331, in create
    obj = obj_creator(request.context, **kwargs)
  File "/usr/lib/python2.7/dist-packages/quantum/plugins/openvswitch/ovs_quantum_plugin.py", line 398, in create_network
    network['network'])
  File "/usr/lib/python2.7/dist-packages/quantum/plugins/openvswitch/ovs_quantum_plugin.py", line 335, in _process_provider_create
    raise q_exc.InvalidInput(error_message=msg)
InvalidInput: Invalid input for operation: GRE networks are not enabled.
2012-12-12 11:09:33 DEBUG [eventlet.wsgi.server] 192.168.5.227 - - [12/Dec/2012 11:09:33] "POST /v2.0/networks.json HTTP/1.1" 400 195 0.101701
2012-12-12 11:09:34 DEBUG [keystone.middleware.auth_token] Authenticating user token
2012-12-12 11:09:34 DEBUG [keystone.middleware.auth_token] Removing headers from request environment: X-Identity-Status,X-Tenant-Id,X-Tenant-Name,X-User-Id,X-User-Name,X-Roles,X-Service-Catalog,X-User,X-Tenant,X-Role

I made a mistake while editing the ovs_quantum_plugin.ini file.
After moving the gre tunneling settings under the {ovs} tage I was able to create the GRE network.

hi
I am trying to create a with GRE provider network using quantum (Folsom release on Ubuntu 12.04 ) and i have the same problem but i think no mestake on my ovs_quantum_plugin.ini file in the network node :

[DATABASE]
sql_connection = mysql://quantum:password@10.38.97.1:3306/quantum
reconnect_interval = 2

[OVS]
tenant_network_type = gre
tunnel_id_ranges = 1:1000
enable_tunneling = True
integration_bridge = br-int
tunnel_bridge = br-tun
local_ip = 10.10.10.1

[AGENT]
polling_interval = 2
root_helper = sudo /usr/bin/quantum-rootwrap /etc/quantum/rootwrap.conf

in the controler node : the quantum server log file :
2013-04-02 17:25:33 ERROR [quantum.api.v2.resource] create failed
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/quantum/api/v2/resource.py", line 96, in resource
    result = method(request=request, **args)
  File "/usr/lib/python2.7/dist-packages/quantum/api/v2/base.py", line 335, in create
    obj = obj_creator(request.context, **kwargs)
  File "/usr/lib/python2.7/dist-packages/quantum/plugins/openvswitch/ovs_quantum_plugin.py", line 402, in create_network
    network['network'])
  File "/usr/lib/python2.7/dist-packages/quantum/plugins/openvswitch/ovs_quantum_plugin.py", line 339, in _process_provider_create
    raise q_exc.InvalidInput(error_message=msg)
InvalidInput: Invalid input for operation: GRE networks are not enabled.
2013-04-02 17:25:33 DEBUG [eventlet.wsgi.server] 10.38.97.2 - - [02/Apr/2013 17:25:33] "POST /v2.0/networks.json HTTP/1.1" 400 195 0.066017
2013-04-02 17:25:33 DEBUG [keystone.middleware.auth_token] Authenticating user token

it my second install and i not understand why that not WORK.

HELP me please.

You need to be running quantum-server with --confile /path/to/ovs_quantum_plugin.ini

and have:
[OVS]
tenant_network_type = gre
tunnel_id_ranges = 1:1000
enable_tunneling = True

in that section.

on the controler node, i turn the command : quantum-server --config-file=/etc/quantum/quantum.conf --config-file=/etc/quantum/quantum/plugins/openvswitch/ovs_quantum_plugin.ini --log-dir=/var/log/quantum --log-file=quantum-server.log

and the result :
Traceback (most recent call last):
  File "/usr/bin/quantum-server", line 26, in <module>
    server()
  File "/usr/lib/python2.7/dist-packages/quantum/server/__init__.py", line 34, in main
    config.parse(sys.argv)
  File "/usr/lib/python2.7/dist-packages/quantum/common/config.py", line 62, in parse
    version='%%prog %s' % version_string())
  File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/cfg.py", line 1026, in __call__
    self._parse_config_files()
  File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/cfg.py", line 1496, in _parse_config_files
    raise ConfigFilesNotFoundError(not_read_ok)
quantum.openstack.common.cfg.ConfigFilesNotFoundError: Failed to read some config files: /etc/quantum/quantum/plugins/openvswitch/ovs_quantum_plugin.ini

So, by conf file is bad, but where ? :
[DATABASE]
sql_connection = mysql://quantum:password@localhost:3306/quantum
reconnect_interval = 2

[OVS]
tenant_network_type = gre
tunnel_id_ranges = 1:1000
enable_tunneling = True
[AGENT]
polling_interval = 2
root_helper = sudo /usr/bin/quantum-rootwrap /etc/quantum/rootwrap.conf

I don't understant, thanks four your help

You should not have the --config-file=/path you should run:

quantum-server --config-file /etc/quantum/quantum.conf -- config-file /etc/quantum/quantum/plugins/openvswitch/ovs_quantum_plugin.ini

Also, does: /etc/quantum/quantum/plugins/openvswitch/ovs_quantum_plugin.ini (exist and readable by the user you are running as?)

Fine, my error has in the path : /etc/quantum/quantum/plugins/openvswitch cf : quantum-server --config-file=/etc/quantum/quantum.conf --config-file=/etc/quantum/quantum/plugins/openvswitch/ovs_quantum_plugin.ini --log-dir=/var/log/quantum --log-file=quantum-server.log

Thank you very mutch Aaron.