Public bug reported:
I use zed version of Neutron with OVS driver, but looks like the same
issue could be reproduced on master for OVN as well.
- I have huge region with 1000+ ports
- Run GET request for list of ports (/v2/ports?limit=0). (which takes 10+
seconds)
- exactly after running this command I delete one port with its network
Finally I get: 500 on request and traceback on neutron-server api:
""""
IndexError: list index out of range
File "pecan/core.py", line 693, in __call__
self.invoke_controller(controller, args, kwargs, state)
File "pecan/core.py", line 584, in invoke_controller
result = controller(*args, **kwargs)
File "neutron_lib/db/api.py", line 142, in wrapped
setattr(e, '_RETRY_EXCEEDED', True)
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "neutron_lib/db/api.py", line 138, in wrapped
return f(*args, **kwargs)
File "oslo_db/api.py", line 154, in wrapper
ectxt.value = e.inner_exc
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "oslo_db/api.py", line 142, in wrapper
return f(*args, **kwargs)
File "neutron_lib/db/api.py", line 190, in wrapped
context_reference.session.rollback()
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "neutron_lib/db/api.py", line 184, in wrapped
return f(*dup_args, **dup_kwargs)
File "neutron/pecan_wsgi/controllers/utils.py", line 65, in wrapped
return f(*args, **kwargs)
File "neutron/pecan_wsgi/controllers/resource.py", line 135, in index
return self.get(*args, **kwargs)
File "neutron/pecan_wsgi/controllers/resource.py", line 144, in get
return {self.collection: self.plugin_lister(*lister_args,
File "neutron_lib/db/api.py", line 226, in wrapped
return f_with_retry(*args, **kwargs,
File "neutron_lib/db/api.py", line 142, in wrapped
setattr(e, '_RETRY_EXCEEDED', True)
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "neutron_lib/db/api.py", line 138, in wrapped
return f(*args, **kwargs)
File "oslo_db/api.py", line 154, in wrapper
ectxt.value = e.inner_exc
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "oslo_db/api.py", line 142, in wrapper
return f(*args, **kwargs)
File "neutron_lib/db/api.py", line 190, in wrapped
context_reference.session.rollback()
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "neutron_lib/db/api.py", line 184, in wrapped
return f(*dup_args, **dup_kwargs)
File "oslo_db/sqlalchemy/enginefacade.py", line 1010, in wrapper
return fn(*args, **kwargs)
File "neutron/db/db_base_plugin_v2.py", line 1635, in get_ports
resource_extend.apply_funcs(port_def.COLLECTION_NAME_BULK, items, None)
File "oslo_utils/timeutils.py", line 319, in wrapper
result = func(*args, **kwargs)
File "neutron_lib/db/resource_extend.py", line 91, in apply_funcs
resolved_func(response, db_object)
File "neutron/services/qos/qos_plugin.py", line 300, in
_extend_port_resource_request_bulk
min_bw_request_group = QoSPlugin._get_min_bw_request_group(
File "neutron/services/qos/qos_plugin.py", line 207, in
_get_min_bw_request_group
min_bw_traits = QoSPlugin._get_min_bw_traits(vnic_type, segments)
File "neutron/services/qos/qos_plugin.py", line 256, in _get_min_bw_traits
first_segment = segments[0]
""""
I suppose, that it happens because network was removed during request and there
are no network segments (for this network) in DB. So segments in result equal
to empty list.
As result here:
https://github.com/openstack/neutron/blob/5fbb3c1a3ffd895acb4869e54643c63981e38f34/neutron/services/qos/qos_plugin.py#L256
Getting the first element from empty list is failed.
** Affects: neutron
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2111584
Title:
Failed get list of ports due to removed network
Status in neutron:
New
Bug description:
I use zed version of Neutron with OVS driver, but looks like the same
issue could be reproduced on master for OVN as well.
- I have huge region with 1000+ ports
- Run GET request for list of ports (/v2/ports?limit=0). (which takes 10+
seconds)
- exactly after running this command I delete one port with its network
Finally I get: 500 on request and traceback on neutron-server api:
""""
IndexError: list index out of range
File "pecan/core.py", line 693, in __call__
self.invoke_controller(controller, args, kwargs, state)
File "pecan/core.py", line 584, in invoke_controller
result = controller(*args, **kwargs)
File "neutron_lib/db/api.py", line 142, in wrapped
setattr(e, '_RETRY_EXCEEDED', True)
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "neutron_lib/db/api.py", line 138, in wrapped
return f(*args, **kwargs)
File "oslo_db/api.py", line 154, in wrapper
ectxt.value = e.inner_exc
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "oslo_db/api.py", line 142, in wrapper
return f(*args, **kwargs)
File "neutron_lib/db/api.py", line 190, in wrapped
context_reference.session.rollback()
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "neutron_lib/db/api.py", line 184, in wrapped
return f(*dup_args, **dup_kwargs)
File "neutron/pecan_wsgi/controllers/utils.py", line 65, in wrapped
return f(*args, **kwargs)
File "neutron/pecan_wsgi/controllers/resource.py", line 135, in index
return self.get(*args, **kwargs)
File "neutron/pecan_wsgi/controllers/resource.py", line 144, in get
return {self.collection: self.plugin_lister(*lister_args,
File "neutron_lib/db/api.py", line 226, in wrapped
return f_with_retry(*args, **kwargs,
File "neutron_lib/db/api.py", line 142, in wrapped
setattr(e, '_RETRY_EXCEEDED', True)
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "neutron_lib/db/api.py", line 138, in wrapped
return f(*args, **kwargs)
File "oslo_db/api.py", line 154, in wrapper
ectxt.value = e.inner_exc
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "oslo_db/api.py", line 142, in wrapper
return f(*args, **kwargs)
File "neutron_lib/db/api.py", line 190, in wrapped
context_reference.session.rollback()
File "oslo_utils/excutils.py", line 227, in __exit__
self.force_reraise()
File "oslo_utils/excutils.py", line 200, in force_reraise
raise self.value
File "neutron_lib/db/api.py", line 184, in wrapped
return f(*dup_args, **dup_kwargs)
File "oslo_db/sqlalchemy/enginefacade.py", line 1010, in wrapper
return fn(*args, **kwargs)
File "neutron/db/db_base_plugin_v2.py", line 1635, in get_ports
resource_extend.apply_funcs(port_def.COLLECTION_NAME_BULK, items, None)
File "oslo_utils/timeutils.py", line 319, in wrapper
result = func(*args, **kwargs)
File "neutron_lib/db/resource_extend.py", line 91, in apply_funcs
resolved_func(response, db_object)
File "neutron/services/qos/qos_plugin.py", line 300, in
_extend_port_resource_request_bulk
min_bw_request_group = QoSPlugin._get_min_bw_request_group(
File "neutron/services/qos/qos_plugin.py", line 207, in
_get_min_bw_request_group
min_bw_traits = QoSPlugin._get_min_bw_traits(vnic_type, segments)
File "neutron/services/qos/qos_plugin.py", line 256, in _get_min_bw_traits
first_segment = segments[0]
""""
I suppose, that it happens because network was removed during request and
there are no network segments (for this network) in DB. So segments in result
equal to empty list.
As result here:
https://github.com/openstack/neutron/blob/5fbb3c1a3ffd895acb4869e54643c63981e38f34/neutron/services/qos/qos_plugin.py#L256
Getting the first element from empty list is failed.
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https://bugs.launchpad.net/neutron/+bug/2111584/+subscriptions
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