Public bug reported:
Using extended firewall plugin, which uses core_plugin (ML2 plugin) to
create and delete port.
Steps:
1. Delete the router attached interface.
2. Delete the corresponding router port.
3. Create new port with same IP.
Suspect using same context consecutively to delete and create port,
getting below exception. As, with new context didn't get the error.
Exception:
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
[req-d240dbe4-6f75-489d-a709-6ff06bb8fa22 admin -] Exception during message
handling: New instan
ce <IPAllocation at 0x7fc803f00f90> with identity key (<class
'neutron.db.models_v2.IPAllocation'>, (u'12.0.0.1',
u'ebc4f10e-f109-4c80-9f4f-1b0979981318',
u'f3c2535c-120e-43ab-a363-db35e49bcb68')) conflicts with persistent instance
<IPAllocation at 0x7fc803e10210>
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher Traceback
(most recent call last):
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
138, in _
dispatch_and_reply
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
incoming.message))
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
185, in _
dispatch
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher return
self._do_dispatch(endpoint, method, ctxt, args)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
127, in _
do_dispatch
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher result =
func(ctxt, **new_args)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/opt/stack/neutron-fwaas/neutron_fwaas/services/firewall/nfp_fw/nfp_fw_plugin.py",
line
72, in get_router_interfaces_details
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
context.elevated(), {'port': new_port})
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 1115, in create_port
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher result,
mech_context = self._create_port_db(context, port)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 1089, in
_create_port_db
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher port_db =
self.create_port_db(context, port)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/opt/stack/neutron/neutron/db/db_base_plugin_v2.py", line 1256, in
create_port_db
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
db_port['dns_assignment'] = dns_assignment
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 490,
in __exit__
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self.rollback()
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line
60, in __ex
it__
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
compat.reraise(exc_type, exc_value, exc_tb)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 487,
in __exit__
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self.commit()
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 392,
in commit
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self._prepare_impl()
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 372,
in _prepare_impl
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self.session.flush()
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2019,
in flush
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self._flush(objects)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2019,
in flush
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self._flush(objects)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2137,
in _flush
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
transaction.rollback(_capture_exception=True)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line
60, in __exit__
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
compat.reraise(exc_type, exc_value, exc_tb)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2101,
in _flush
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
flush_context.execute()
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line
373, in execute
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
rec.execute(self)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line
532, in execute
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher uow
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line
149, in save_obj
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
base_mapper, states, uowtransaction
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line
301, in _organize_states_for_save
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
state_str(existing)))
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher FlushError:
New instance <IPAllocation at 0x7fc803f00f90> with identity key (<class
'neutron.db.models_v2.IPAllocation'>, (u'12.0.0.1',
u'ebc4f10e-f109-4c80-9f4f-1b0979981318',
u'f3c2535c-120e-43ab-a363-db35e49bcb68')) conflicts with persistent instance
<IPAllocation at 0x7fc803e10210>
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
2016-04-08 13:22:28.064 27920 ERROR oslo_messaging._drivers.common
[req-d240dbe4-6f75-489d-a709-6ff06bb8fa22 admin -] Returning exception New
instance <IPAllocation at 0x7fc803f00f90> with identity key (<class
'neutron.db.models_v2.IPAllocation'>, (u'12.0.0.1',
u'ebc4f10e-f109-4c80-9f4f-1b0979981318',
u'f3c2535c-120e-43ab-a363-db35e49bcb68')) conflicts with persistent instance
<IPAllocation at 0x7fc803e10210> to caller
2016-04-08 13:22:28.064 27920 ERROR oslo_messaging._drivers.common
[req-d240dbe4-6f75-489d-a709-6ff06bb8fa22 admin -] ['Traceback (most recent
call last):\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
138, in _dispatch_and_reply\n incoming.message))\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
185, in _dispatch\n return self._do_dispatch(endpoint, method, ctxt,
args)\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
127, in _do_dispatch\n result = func(ctxt, **new_args)\n', ' File
"/opt/stack/neutron-fwaas/neutron_fwaas/services/firewall/nfp_fw/nfp_fw_plugin.py",
line 72, in get_router_interfaces_details\n context.elevated(), {\'port\':
new_port})\n', ' File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line
1115, in create_port\n result, mech_context = self._create_port_db(context,
port)\n', ' File "/opt/stack/neutron/neutron/
plugins/ml2/plugin.py", line 1089, in _create_port_db\n port_db =
self.create_port_db(context, port)\n', ' File
"/opt/stack/neutron/neutron/db/db_base_plugin_v2.py", line 1256, in
create_port_db\n db_port[\'dns_assignment\'] = dns_assignment\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 490,
in __exit__\n self.rollback()\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line
60, in __exit__\n compat.reraise(exc_type, exc_value, exc_tb)\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 487,
in __exit__\n self.commit()\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 392,
in commit\n self._prepare_impl()\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 372,
in _prepare_impl\n self.session.flush()\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2019,
in flush\n self._flush(objects)\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2137,
in _flush\n transaction.rollback(_capture_exception=True)\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line
60, in __exit__\n compat.reraise(exc_type, exc_value, exc_tb)\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2101,
in _flush\n flush_context.execute()\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line
373, in execute\n rec.execute(self)\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line
532, in execute\n uow\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line
149, in save_obj\n base_mapper, states, uowtransaction\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line
301, in _organize_states_for_save\n state_str
(existing)))\n', "FlushError: New instance <IPAllocation at 0x7fc803f00f90>
with identity key (<class 'neutron.db.models_v2.IPAllocation'>, (u'12.0.0.1',
u'ebc4f10e-f109-4c80-9f4f-1b0979981318',
u'f3c2535c-120e-43ab-a363-db35e49bcb68')) conflicts with persistent instance
<IPAllocation at 0x7fc803e10210>\n"]
** Affects: neutron
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1567844
Title:
Create Port Error - Conflict with persistent instance
Status in neutron:
New
Bug description:
Using extended firewall plugin, which uses core_plugin (ML2 plugin) to
create and delete port.
Steps:
1. Delete the router attached interface.
2. Delete the corresponding router port.
3. Create new port with same IP.
Suspect using same context consecutively to delete and create port,
getting below exception. As, with new context didn't get the error.
Exception:
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
[req-d240dbe4-6f75-489d-a709-6ff06bb8fa22 admin -] Exception during message
handling: New instan
ce <IPAllocation at 0x7fc803f00f90> with identity key (<class
'neutron.db.models_v2.IPAllocation'>, (u'12.0.0.1',
u'ebc4f10e-f109-4c80-9f4f-1b0979981318',
u'f3c2535c-120e-43ab-a363-db35e49bcb68')) conflicts with persistent instance
<IPAllocation at 0x7fc803e10210>
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher Traceback
(most recent call last):
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
138, in _
dispatch_and_reply
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
incoming.message))
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
185, in _
dispatch
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher return
self._do_dispatch(endpoint, method, ctxt, args)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
127, in _
do_dispatch
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher result
= func(ctxt, **new_args)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/opt/stack/neutron-fwaas/neutron_fwaas/services/firewall/nfp_fw/nfp_fw_plugin.py",
line
72, in get_router_interfaces_details
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
context.elevated(), {'port': new_port})
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 1115, in create_port
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher result,
mech_context = self._create_port_db(context, port)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 1089, in
_create_port_db
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher port_db
= self.create_port_db(context, port)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/opt/stack/neutron/neutron/db/db_base_plugin_v2.py", line 1256, in
create_port_db
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
db_port['dns_assignment'] = dns_assignment
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 490,
in __exit__
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self.rollback()
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line
60, in __ex
it__
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
compat.reraise(exc_type, exc_value, exc_tb)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 487,
in __exit__
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self.commit()
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 392,
in commit
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self._prepare_impl()
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 372,
in _prepare_impl
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self.session.flush()
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2019,
in flush
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self._flush(objects)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2019,
in flush
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
self._flush(objects)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2137,
in _flush
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
transaction.rollback(_capture_exception=True)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line
60, in __exit__
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
compat.reraise(exc_type, exc_value, exc_tb)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2101,
in _flush
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
flush_context.execute()
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line
373, in execute
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
rec.execute(self)
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line
532, in execute
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher uow
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line
149, in save_obj
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
base_mapper, states, uowtransaction
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line
301, in _organize_states_for_save
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
state_str(existing)))
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher FlushError:
New instance <IPAllocation at 0x7fc803f00f90> with identity key (<class
'neutron.db.models_v2.IPAllocation'>, (u'12.0.0.1',
u'ebc4f10e-f109-4c80-9f4f-1b0979981318',
u'f3c2535c-120e-43ab-a363-db35e49bcb68')) conflicts with persistent instance
<IPAllocation at 0x7fc803e10210>
2016-04-08 13:22:28.061 27920 ERROR oslo_messaging.rpc.dispatcher
2016-04-08 13:22:28.064 27920 ERROR oslo_messaging._drivers.common
[req-d240dbe4-6f75-489d-a709-6ff06bb8fa22 admin -] Returning exception New
instance <IPAllocation at 0x7fc803f00f90> with identity key (<class
'neutron.db.models_v2.IPAllocation'>, (u'12.0.0.1',
u'ebc4f10e-f109-4c80-9f4f-1b0979981318',
u'f3c2535c-120e-43ab-a363-db35e49bcb68')) conflicts with persistent instance
<IPAllocation at 0x7fc803e10210> to caller
2016-04-08 13:22:28.064 27920 ERROR oslo_messaging._drivers.common
[req-d240dbe4-6f75-489d-a709-6ff06bb8fa22 admin -] ['Traceback (most recent
call last):\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
138, in _dispatch_and_reply\n incoming.message))\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
185, in _dispatch\n return self._do_dispatch(endpoint, method, ctxt,
args)\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line
127, in _do_dispatch\n result = func(ctxt, **new_args)\n', ' File
"/opt/stack/neutron-fwaas/neutron_fwaas/services/firewall/nfp_fw/nfp_fw_plugin.py",
line 72, in get_router_interfaces_details\n context.elevated(), {\'port\':
new_port})\n', ' File "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line
1115, in create_port\n result, mech_context = self._create_port_db(context,
port)\n', ' File "/opt/stack/neutron/neutro
n/plugins/ml2/plugin.py", line 1089, in _create_port_db\n port_db =
self.create_port_db(context, port)\n', ' File
"/opt/stack/neutron/neutron/db/db_base_plugin_v2.py", line 1256, in
create_port_db\n db_port[\'dns_assignment\'] = dns_assignment\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 490,
in __exit__\n self.rollback()\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line
60, in __exit__\n compat.reraise(exc_type, exc_value, exc_tb)\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 487,
in __exit__\n self.commit()\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 392,
in commit\n self._prepare_impl()\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 372,
in _prepare_impl\n self.session.flush()\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 201
9, in flush\n self._flush(objects)\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2137,
in _flush\n transaction.rollback(_capture_exception=True)\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line
60, in __exit__\n compat.reraise(exc_type, exc_value, exc_tb)\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2101,
in _flush\n flush_context.execute()\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line
373, in execute\n rec.execute(self)\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line
532, in execute\n uow\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line
149, in save_obj\n base_mapper, states, uowtransaction\n', ' File
"/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line
301, in _organize_states_for_save\n state_s
tr(existing)))\n', "FlushError: New instance <IPAllocation at 0x7fc803f00f90>
with identity key (<class 'neutron.db.models_v2.IPAllocation'>, (u'12.0.0.1',
u'ebc4f10e-f109-4c80-9f4f-1b0979981318',
u'f3c2535c-120e-43ab-a363-db35e49bcb68')) conflicts with persistent instance
<IPAllocation at 0x7fc803e10210>\n"]
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