** Changed in: quantum/folsom
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1110807
Title:
Openstack quantum, race condition in ip address creation when starting
50 VMs on a 5-node cluster
Status in OpenStack Quantum (virtual network service):
Fix Released
Status in quantum folsom series:
Fix Released
Bug description:
When starting many VMs the same ip address is allocated to two different
ports.
We use quantum in combination with openvswitch and a postgresql database.
This affects folsom 2012-2
2013-01-30 16:21:28 DEBUG [quantum.db.db_base_plugin_v2] Generated mac for
network 66b5d6c2-3869-4d5f-b239-3896ff502022 is fa:16:3e:85:44:35
2013-01-30 16:21:28 DEBUG [quantum.db.db_base_plugin_v2] Allocated IP -
10.200.200.24 from 10.200.200.24 to 10.200.200.254
2013-01-30 16:21:28 DEBUG [quantum.db.db_base_plugin_v2] Allocated IP
10.200.200.24
(66b5d6c2-3869-4d5f-b239-3896ff502022/73b7eb77-c987-4c83-9ea7-45e57c89869d/e8e60edc-e5ce-46a3-8dbd-cfe5648c07b9)
2013-01-30 16:21:28 DEBUG [routes.middleware] No route matched for POST
/ports.json
2013-01-30 16:21:28 DEBUG [routes.middleware] Matched POST /ports.json
2013-01-30 16:21:28 DEBUG [routes.middleware] Route path:
'/ports{.format}', defaults: {'action': u'create', 'controller':
wsgify(quantum.api.v2.resource.resource, RequestClass=<class
'quantum.api.v2.resource.Request'>)}
2013-01-30 16:21:28 DEBUG [routes.middleware] Match dict: {'action':
u'create', 'controller': wsgify(quantum.api.v2.resource.resource,
RequestClass=<class 'quantum.api.v2.resource.Request'>), 'format': u'json'}
2013-01-30 16:21:28 DEBUG [quantum.openstack.common.rpc.amqp] Sending
port.create.start on notifications.info
2013-01-30 16:21:28 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/db/db_base_plugin_v2.py",
line 1216, in create_port
context.session.add(allocated)
File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line
402, in __exit__
self.commit()
File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line
314, in commit
self._prepare_impl()
File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line
298, in _prepare_impl
self.session.flush()
File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line
1583, in flush
self._flush(objects)
File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line
1654, in _flush
flush_context.execute()
File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line
331, in execute
rec.execute(self)
File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line
475, in execute
uow
File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line
64, in save_obj
table, insert)
File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line
530, in _emit_insert_statements
execute(statement, multiparams)
File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line
1449, in execute
params)
File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line
1584, in _execute_clauseelement
compiled_sql, distilled_params
File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line
1698, in _execute_context
context)
File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line
1691, in _execute_context
context)
File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/default.py", line
331, in do_execute
cursor.execute(statement, parameters)
IntegrityError: (IntegrityError) duplicate key value violates unique
constraint "ipallocations_pkey"
DETAIL: Key (ip_address, subnet_id, network_id)=(10.200.200.24,
73b7eb77-c987-4c83-9ea7-45e57c89869d, 66b5d6c2-3869-4d5f-b239-3896ff502022)
already exists.
'INSERT INTO ipallocations (port_id, ip_address, subnet_id, network_id,
expiration) VALUES (%(port_id)s, %(ip_address)s, %(subnet_id)s, %(network_id)s,
%(expiration)s)' {'network_id': u'66b5d6c2-3869-4d5f-b239-3896ff502022',
'subnet_id': u'73b7eb77-c987-4c83-9ea7-45e57c89869d', 'port_id':
'e8e60edc-e5ce-46a3-8dbd-cfe5648c07b9', 'ip_address': u'10.200.200.24',
'expiration': datetime.datetime(2013, 1, 30, 21, 23, 28, 665181)}
2013-01-30 16:21:28 DEBUG [eventlet.wsgi.server] 192.168.119.14 - -
[30/Jan/2013 16:21:28] "POST /v2.0/ports.json HTTP/1.1" 500 215 0.240021
2013-01-30 16:21:28 DEBUG [amqplib] Closed channel #1
2013-01-30 16:21:28 DEBUG [amqplib] using channel_id: 1
2013-01-30 16:21:28 DEBUG [amqplib] Channel open
2013-01-30 16:21:28 DEBUG [quantum.openstack.common.rpc.amqp] Sending
port.create.start on notifications.info
2013-01-30 16:21:28 DEBUG [amqplib] Closed channel #1
2013-01-30 16:21:28 DEBUG [amqplib] using channel_id: 1
2013-01-30 16:21:28 DEBUG [amqplib] Channel open
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