We still see this failure happening in Red Hat CI with the same symptoms
for OSP12 (Pike), reopening.
** Changed in: neutron
Status: Fix Released => Confirmed
** Bug watch added: Red Hat Bugzilla #1506668
https://bugzilla.redhat.com/show_bug.cgi?id=1506668
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https://bugs.launchpad.net/bugs/1706750
Title:
FlushError for automatic IPAllocations when subnet create is retried
Status in neutron:
Confirmed
Bug description:
The error is seen in Red Hat CI:
https://bugzilla.redhat.com/show_bug.cgi?id=1470784
There are hits in Kibana too:
http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22FlushError%3A%20New%20instance%20%3CIPAllocation%20at%5C%22
In server.log:
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
[req-3c97d83e-3beb-4b28-a29f-697fc1ee8bc6 5f2e0d72ef8e4fb18b500759cfe5e503
205f2a3630a0426f8da20b4467ea003b - default default] POST failed.: FlushError:
New instance <IPAllocation at 0x8b3f7d0> with identity key (<class
'neutron.db.models_v2.IPAllocation'>, ('2003::1:f816:3eff:fe3f:aa00',
'8032a1cd-9236-4126-83fa-2f039ed2b890',
'c0542b84-bcd0-48e1-ace1-6da1f50246dc')) conflicts with persistent instance
<IPAllocation at 0x89ac310>
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
Traceback (most recent call last):
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/pecan/core.py", line 678, in __call__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.invoke_controller(controller, args, kwargs, state)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/pecan/core.py", line 569, in
invoke_controller
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
result = controller(*args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 94, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
setattr(e, '_RETRY_EXCEEDED', True)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in
__exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.force_reraise()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in
force_reraise
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
six.reraise(self.type_, self.value, self.tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 90, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(*args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 150, in wrapper
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
ectxt.value = e.inner_exc
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in
__exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.force_reraise()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in
force_reraise
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
six.reraise(self.type_, self.value, self.tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 138, in wrapper
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(*args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 129, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
LOG.debug("Retry wrapper got retriable exception: %s", e)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in
__exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.force_reraise()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in
force_reraise
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
six.reraise(self.type_, self.value, self.tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 125, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(*dup_args, **dup_kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File
"/usr/lib/python2.7/site-packages/neutron/pecan_wsgi/controllers/utils.py",
line 70, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(*args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File
"/usr/lib/python2.7/site-packages/neutron/pecan_wsgi/controllers/resource.py",
line 152, in post
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return self.create(resources)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File
"/usr/lib/python2.7/site-packages/neutron/pecan_wsgi/controllers/resource.py",
line 170, in create
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return {key: creator(*creator_args, **creator_kwargs)}
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/common/utils.py", line 665, in
inner
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(self, context, *args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 164, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return method(*args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 94, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
setattr(e, '_RETRY_EXCEEDED', True)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in
__exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.force_reraise()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in
force_reraise
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
six.reraise(self.type_, self.value, self.tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 90, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(*args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 150, in wrapper
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
ectxt.value = e.inner_exc
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in
__exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.force_reraise()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in
force_reraise
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
six.reraise(self.type_, self.value, self.tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 138, in wrapper
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(*args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 129, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
LOG.debug("Retry wrapper got retriable exception: %s", e)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in
__exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.force_reraise()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in
force_reraise
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
six.reraise(self.type_, self.value, self.tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 125, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(*dup_args, **dup_kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/plugin.py", line
985, in create_subnet
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
result, mech_context = self._create_subnet_db(context, subnet)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/plugin.py", line
977, in _create_subnet_db
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self._create_subnet_postcommit(context, result, net_db, ipam_sub)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 164, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return method(*args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 94, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
setattr(e, '_RETRY_EXCEEDED', True)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in
__exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.force_reraise()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in
force_reraise
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
six.reraise(self.type_, self.value, self.tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 90, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(*args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 150, in wrapper
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
ectxt.value = e.inner_exc
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in
__exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.force_reraise()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in
force_reraise
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
six.reraise(self.type_, self.value, self.tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 138, in wrapper
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(*args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 129, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
LOG.debug("Retry wrapper got retriable exception: %s", e)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in
__exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.force_reraise()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in
force_reraise
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
six.reraise(self.type_, self.value, self.tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 125, in wrapped
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
return f(*dup_args, **dup_kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/db_base_plugin_v2.py", line
675, in _create_subnet_postcommit
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
result, ipam_subnet)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/db/ipam_pluggable_backend.py",
line 491, in add_auto_addrs_on_network_ports
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
allocated.create()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/objects/base.py", line 225, in
decorator
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
res = func(self, *args, **kwargs)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/objects/base.py", line 632, in
create
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.modify_fields_to_db(fields))
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib/python2.7/site-packages/neutron/objects/db/api.py", line 61, in
create_object
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
context.session.add(db_obj)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 567,
in __exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.rollback()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/util/langhelpers.py", line
66, in __exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
compat.reraise(exc_type, exc_value, exc_tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 564,
in __exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.commit()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 461,
in commit
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self._prepare_impl()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 441,
in _prepare_impl
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self.session.flush()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2171,
in flush
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
self._flush(objects)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2291,
in _flush
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
transaction.rollback(_capture_exception=True)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/util/langhelpers.py", line
66, in __exit__
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
compat.reraise(exc_type, exc_value, exc_tb)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/session.py", line 2255,
in _flush
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
flush_context.execute()
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/unitofwork.py", line
389, in execute
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
rec.execute(self)
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/unitofwork.py", line
548, in execute
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
uow
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/persistence.py", line
156, in save_obj
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
base_mapper, states, uowtransaction
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/persistence.py", line
312, in _organize_states_for_save
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
state_str(existing)))
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
FlushError: New instance <IPAllocation at 0x8b3f7d0> with identity key (<class
'neutron.db.models_v2.IPAllocation'>, ('2003::1:f816:3eff:fe3f:aa00',
'8032a1cd-9236-4126-83fa-2f039ed2b890',
'c0542b84-bcd0-48e1-ace1-6da1f50246dc')) conflicts with persistent instance
<IPAllocation at 0x89ac310>
2017-07-13 15:20:51.064 85185 ERROR neutron.pecan_wsgi.hooks.translation
Just before the traceback, we see retry triggered by StaleDataError:
2017-07-13 15:20:50.668 85185 DEBUG neutron.db.api
[req-3c97d83e-3beb-4b28-a29f-697fc1ee8bc6 5f2e0d72ef8e4fb18b500759cfe5e503
205f2a3630a0426f8da20b4467ea003b - default default] Retry wrapper got retriable
exception: UPDATE statement on table 'standardattributes' expected to update 1
row(s); 0 were matched. wrapped
/usr/lib/python2.7/site-packages/neutron/db/api.py:129
2017-07-13 15:20:50.669 85185 DEBUG oslo_db.api
[req-3c97d83e-3beb-4b28-a29f-697fc1ee8bc6 5f2e0d72ef8e4fb18b500759cfe5e503
205f2a3630a0426f8da20b4467ea003b - default default] Performing DB retry for
function neutron.db.db_base_plugin_v2._create_subnet_postcommit wrapper
/usr/lib/python2.7/site-packages/oslo_db/api.py:152
This is probably related to https://review.openstack.org/#/c/396718/
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