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[Bug 2083570] Re: Neutron times out handling a request to create a network

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: OpenStack Infra <2083570@xxxxxxxxxxxxxxxxxx>
Date: Fri, 13 Dec 2024 20:39:00 -0000
Reply-to: Bug 2083570 <2083570@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
Reviewed:  https://review.opendev.org/c/openstack/neutron/+/936428
Committed: https://opendev.org/openstack/neutron/commit/865097c6896a87fa5b6d508058db9ff1e6c423d1
Submitter: "Zuul (22348)"
Branch:    master

commit 865097c6896a87fa5b6d508058db9ff1e6c423d1
Author: Rodolfo Alonso Hernandez <ralonsoh@xxxxxxxxxx>
Date:   Fri Nov 29 09:30:23 2024 +0000

    [OVN] Improve initial hash ring setup
    
    When using WSGI module, the multiprocess event is not shared between
    the WSGI workers. This new implementation retrieves the WSGI start time
    to define the OVN hash ring register creation time. That will be used
    to filter out the stale registers.
    
    Depends-On: https://review.opendev.org/c/openstack/devstack/+/936669
    
    Closes-Bug: #2083570
    Change-Id: Id9f851f33c2cb3d2c2759a3c66adf2599a3122fe


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/2083570

Title:
  Neutron times out handling a request to create a network

Status in neutron:
  Fix Released

Bug description:
  This happened in gate:
  https://369ed7cdb441e6ba648b-4c5da0a4d8de7235fc811d3d8ea842f8.ssl.cf5.rackcdn.com/930608/3/gate/neutron-
  ovn-tempest-ipv6-only-ovs-release/16831fa/job-output.txt

  In devstack log, we see this:

  2024-10-02 19:07:29.822345 | controller | ++ lib/tempest:configure_tempest:384        :   openstack --os-cloud devstack-admin --os-region RegionOne network create --share shared
  2024-10-02 19:12:30.075768 | controller | Error while executing command: HttpException: 500, : 500 Internal Server Error: Internal Server Error: The server encountered an internal error or: misconfiguration and was unable to complete: your request.: Please contact the server administrator at: webmaster@localhost to inform them of the time this error occurred,: and the actions you performed just before this error.: More information about this error may be available: in the server error log.: Apache/2.4.52 (Ubuntu) Server at 2001:4802:7805:104:be76:4eff:fe20:23a0 Port 80

  The req-id is: req-77c1f0b0-0b12-4b4b-9caa-f1d749596242

  In neutron-api log, we see this as the last message for the req-id:

  Oct 02 19:07:30.194086 np0038691690 devstack@neutron-
  api.service[59580]: DEBUG neutron_lib.callbacks.manager [None
  req-77c1f0b0-0b12-4b4b-9caa-f1d749596242 admin admin] Publish
  callbacks
  ['neutron.services.auto_allocate.db._ensure_external_network_default_value_callback-8743187362991']
  for network (13143b5f-8c77-4b54-be12-2807c0430033), precommit_create
  {{(pid=59580) _notify_loop /opt/stack/data/venv/lib/python3.10/site-
  packages/neutron_lib/callbacks/manager.py:184}}

  Nothing after it related to the req-id.

  There are also these errors for hash ring / db locks after the last
  req-id tagged message:

  Oct 02 19:07:59.684841 np0038691690 devstack@neutron-api.service[59580]: DEBUG futurist.periodics [-] Submitting periodic callback 'neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb.maintenance.HashRingHealthCheckPeriodics.touch_hash_ring_nodes' {{(pid=59580) _process_scheduled /opt/stack/data/venv/lib/python3.10/site-packages/futurist/periodics.py:638}}
  Oct 02 19:08:09.697938 np0038691690 devstack@neutron-api.service[59580]: DEBUG dbcounter [-] [59580] Writing DB stats neutron:UPDATE=1 {{(pid=59580) stat_writer /opt/stack/data/venv/lib/python3.10/site-packages/dbcounter.py:115}}
  Oct 02 19:08:20.609536 np0038691690 devstack@neutron-api.service[59580]: DEBUG neutron_lib.db.api [None req-fbfa6ef6-a02f-4aa1-bbc0-cfa1aab9022e None None] Retry wrapper got retriable exception: (pymysql.err.OperationalError) (1205, 'Lock wait timeout exceeded; try restarting transaction')
  Oct 02 19:08:20.609536 np0038691690 devstack@neutron-api.service[59580]: [SQL: UPDATE ovn_hash_ring SET updated_at=%(updated_at)s WHERE ovn_hash_ring.node_uuid = %(node_uuid_1)s]
  Oct 02 19:08:20.609536 np0038691690 devstack@neutron-api.service[59580]: [parameters: {'updated_at': datetime.datetime(2024, 10, 2, 19, 7, 30, 112762), 'node_uuid_1': '90677d5a-7f61-461d-8b8c-b9fad0a372e0'}]
  Oct 02 19:08:20.609536 np0038691690 devstack@neutron-api.service[59580]: (Background on this error at: https://sqlalche.me/e/20/e3q8) {{(pid=59580) wrapped /opt/stack/data/venv/lib/python3.10/site-packages/neutron_lib/db/api.py:185}}
  Oct 02 19:08:20.610666 np0038691690 devstack@neutron-api.service[59580]: DEBUG oslo_db.api [None req-fbfa6ef6-a02f-4aa1-bbc0-cfa1aab9022e None None] Performing DB retry for function neutron.db.ovn_hash_ring_db._touch {{(pid=59580) wrapper /opt/stack/data/venv/lib/python3.10/site-packages/oslo_db/api.py:155}}
  Oct 02 19:08:31.116859 np0038691690 devstack@neutron-api.service[59580]: DEBUG dbcounter [-] [59580] Writing DB stats neutron:UPDATE=1 {{(pid=59580) stat_writer /opt/stack/data/venv/lib/python3.10/site-packages/dbcounter.py:115}}
  Oct 02 19:08:50.611310 np0038691690 devstack@neutron-api.service[59580]: DEBUG neutron_lib.db.api [-] Retry wrapper got retriable exception: (pymysql.err.OperationalError) (1205, 'Lock wait timeout exceeded; try restarting transaction')
  Oct 02 19:08:50.611310 np0038691690 devstack@neutron-api.service[59580]: [SQL: UPDATE ovn_hash_ring SET updated_at=%(updated_at)s WHERE ovn_hash_ring.hostname = %(hostname_1)s AND ovn_hash_ring.group_name = %(group_name_1)s]
  Oct 02 19:08:50.611310 np0038691690 devstack@neutron-api.service[59580]: [parameters: {'updated_at': datetime.datetime(2024, 10, 2, 19, 7, 59, 685059), 'hostname_1': 'np0038691690', 'group_name_1': 'mechanism_driver'}]
  Oct 02 19:08:50.611310 np0038691690 devstack@neutron-api.service[59580]: (Background on this error at: https://sqlalche.me/e/20/e3q8) {{(pid=59580) wrapped /opt/stack/data/venv/lib/python3.10/site-packages/neutron_lib/db/api.py:185}}
  Oct 02 19:08:50.612564 np0038691690 devstack@neutron-api.service[59580]: DEBUG oslo_db.api [-] Performing DB retry for function neutron.db.ovn_hash_ring_db._touch {{(pid=59580) wrapper /opt/stack/data/venv/lib/python3.10/site-packages/oslo_db/api.py:155}}
  Oct 02 19:09:01.122051 np0038691690 devstack@neutron-api.service[59580]: DEBUG dbcounter [-] [59580] Writing DB stats neutron:UPDATE=1 {{(pid=59580) stat_writer /opt/stack/data/venv/lib/python3.10/site-packages/dbcounter.py:115}}
  Oct 02 19:09:11.618081 np0038691690 devstack@neutron-api.service[59580]: DEBUG neutron_lib.db.api [None req-fbfa6ef6-a02f-4aa1-bbc0-cfa1aab9022e None None] Retry wrapper got retriable exception: (pymysql.err.OperationalError) (1205, 'Lock wait timeout exceeded; try restarting transaction')
  Oct 02 19:09:11.618081 np0038691690 devstack@neutron-api.service[59580]: [SQL: UPDATE ovn_hash_ring SET updated_at=%(updated_at)s WHERE ovn_hash_ring.node_uuid = %(node_uuid_1)s]
  Oct 02 19:09:11.618081 np0038691690 devstack@neutron-api.service[59580]: [parameters: {'updated_at': datetime.datetime(2024, 10, 2, 19, 8, 21, 110834), 'node_uuid_1': '90677d5a-7f61-461d-8b8c-b9fad0a372e0'}]
  Oct 02 19:09:11.618081 np0038691690 devstack@neutron-api.service[59580]: (Background on this error at: https://sqlalche.me/e/20/e3q8) {{(pid=59580) wrapped /opt/stack/data/venv/lib/python3.10/site-packages/neutron_lib/db/api.py:185}}
  Oct 02 19:09:11.619845 np0038691690 devstack@neutron-api.service[59580]: DEBUG oslo_db.api [None req-fbfa6ef6-a02f-4aa1-bbc0-cfa1aab9022e None None] Performing DB retry for function neutron.db.ovn_hash_ring_db._touch {{(pid=59580) wrapper /opt/stack/data/venv/lib/python3.10/site-packages/oslo_db/api.py:155}}
  Oct 02 19:09:21.740920 np0038691690 devstack@neutron-api.service[59580]: DEBUG dbcounter [-] [59580] Writing DB stats neutron:UPDATE=1 {{(pid=59580) stat_writer /opt/stack/data/venv/lib/python3.10/site-packages/dbcounter.py:115}}
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers [None req-1ed43a5e-ac35-4256-850c-3d3d414dd16e None None] Mechanism driver 'ovn' failed in update_port_postcommit: ovsdbapp.exceptions.TimeoutException: Commands [CheckRevisionNumberCommand(_result=None, name=1ce51282-34b7-4e53-8b1c-811d585a1a7d, resource={'id': '1ce51282-34b7-4e53-8b1c-811d585a1a7d', 'name': '', 'network_id': 'a4a2cb55-6e5c-436e-b2b0-f240149b240f', 'tenant_id': '', 'mac_address': 'fa:16:3e:6e:77:38', 'admin_state_up': True, 'status': 'ACTIVE', 'device_id': '02ca23c9-f068-4884-b5f1-89209b252b98', 'device_owner': 'network:router_gateway', 'standard_attr_id': 23, 'fixed_ips': [{'subnet_id': '8a949128-8d38-454f-b7ed-931aafdeccdf', 'ip_address': '172.24.5.37'}, {'subnet_id': 'b02a7718-b0a3-4b32-afcb-384ab2c14812', 'ip_address': '2001:db8::7e'}], 'allowed_address_pairs': [], 'extra_dhcp_opts': [], 'security_groups': [], 'description': '', 'binding:vnic_type': 'normal', 'binding:profile': {}, 'binding:host_id': 'np0038691690', 'binding:vif_type': 'ovs', 'binding:vif_details': {'port_filter': True, 'connectivity': 'l2', 'bridge_name': 'br-int', 'datapath_type': 'system'}, 'port_security_enabled': False, 'tags': [], 'created_at': '2024-10-02T19:06:13Z', 'updated_at': '2024-10-02T19:06:21Z', 'revision_number': 6, 'project_id': '', 'network': {'id': 'a4a2cb55-6e5c-436e-b2b0-f240149b240f', 'name': 'public', 'tenant_id': 'ae9f99f870e44c829d566f4038cd9fcd', 'admin_state_up': True, 'mtu': 1430, 'status': 'ACTIVE', 'subnets': ['8a949128-8d38-454f-b7ed-931aafdeccdf', 'b02a7718-b0a3-4b32-afcb-384ab2c14812'], 'standard_attr_id': 18, 'shared': False, 'availability_zone_hints': [], 'availability_zones': [], 'ipv4_address_scope': None, 'ipv6_address_scope': None, 'router:external': True, 'vlan_transparent': None, 'description': '', 'port_security_enabled': True, 'is_default': True, 'tags': [], 'created_at': '2024-10-02T19:06:07Z', 'updated_at': '2024-10-02T19:06:21Z', 'revision_number': 3, 'project_id': 'ae9f99f870e44c829d566f4038cd9fcd', 'provider:network_type': 'flat', 'provider:physical_network': 'public', 'provider:segmentation_id': None}}, resource_type=ports, if_exists=True), SetLSwitchPortCommand(_result=None, lport=1ce51282-34b7-4e53-8b1c-811d585a1a7d, external_ids_update=None, columns={'external_ids': {'neutron:port_name': '', 'neutron:device_id': '02ca23c9-f068-4884-b5f1-89209b252b98', 'neutron:project_id': '', 'neutron:cidrs': '172.24.5.37/24 2001:db8::7e/64', 'neutron:device_owner': 'network:router_gateway', 'neutron:subnet_pool_addr_scope4': '', 'neutron:subnet_pool_addr_scope6': '', 'neutron:network_name': 'neutron-a4a2cb55-6e5c-436e-b2b0-f240149b240f', 'neutron:security_group_ids': '', 'neutron:revision_number': '6', 'neutron:vnic_type': 'normal', 'neutron:port_capabilities': '', 'neutron:mtu': '', 'neutron:host_id': 'np0038691690'}, 'parent_name': [], 'tag': [], 'options': {'requested-chassis': 'np0038691690', 'mcast_flood_reports': 'true', 'exclude-lb-vips-from-garp': 'true', 'nat-addresses': 'router', 'router-port': 'lrp-1ce51282-34b7-4e53-8b1c-811d585a1a7d'}, 'enabled': True, 'port_security': [], 'type': 'router'}, if_exists=False), PgDelPortCommand(_result=None, port_group=neutron_pg_drop, lsp=['1ce51282-34b7-4e53-8b1c-811d585a1a7d'], if_exists=False)] exceeded timeout 180 seconds, cause: Result queue is empty
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers Traceback (most recent call last):
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/data/venv/lib/python3.10/site-packages/ovsdbapp/backend/ovs_idl/transaction.py", line 54, in commit
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     result = self.results.get(timeout=self.timeout)
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/data/venv/lib/python3.10/site-packages/eventlet/queue.py", line 320, in get
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     return waiter.wait()
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/data/venv/lib/python3.10/site-packages/eventlet/queue.py", line 139, in wait
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     return get_hub().switch()
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/data/venv/lib/python3.10/site-packages/eventlet/hubs/hub.py", line 310, in switch
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     return self.greenlet.switch()
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers _queue.Empty
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers 
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers The above exception was the direct cause of the following exception:
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers 
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers Traceback (most recent call last):
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 497, in _call_on_drivers
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     getattr(driver.obj, method_name)(context)
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/neutron/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py", line 886, in update_port_postcommit
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     self._ovn_update_port(context.plugin_context, port, original_port,
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/neutron/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py", line 766, in _ovn_update_port
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     self._ovn_client.update_port(plugin_context, port,
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/neutron/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py", line 663, in update_port
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     with self._nb_idl.transaction(check_error=True,
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/usr/lib/python3.10/contextlib.py", line 142, in __exit__
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     next(self.gen)
  Oct 02 19:09:25.055794 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/neutron/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/impl_idl_ovn.py", line 274, in transaction
  Oct 02 19:09:25.058874 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     with super(OvsdbNbOvnIdl, self).transaction(*args, **kwargs) as t:
  Oct 02 19:09:25.058874 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/usr/lib/python3.10/contextlib.py", line 142, in __exit__
  Oct 02 19:09:25.058874 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     next(self.gen)
  Oct 02 19:09:25.058874 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/data/venv/lib/python3.10/site-packages/ovsdbapp/api.py", line 114, in transaction
  Oct 02 19:09:25.058874 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     with self.create_transaction(
  Oct 02 19:09:25.058874 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/data/venv/lib/python3.10/site-packages/ovsdbapp/api.py", line 71, in __exit__
  Oct 02 19:09:25.058874 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     self.result = self.commit()
  Oct 02 19:09:25.058874 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers   File "/opt/stack/data/venv/lib/python3.10/site-packages/ovsdbapp/backend/ovs_idl/transaction.py", line 56, in commit
  Oct 02 19:09:25.058874 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers     raise exceptions.TimeoutException(
  Oct 02 19:09:25.058874 np0038691690 devstack@neutron-api.service[59580]: ERROR neutron.plugins.ml2.managers ovsdbapp.exceptions.TimeoutException: Commands [CheckRevisionNumberCommand(_result=None, name=1ce51282-34b7-4e53-8b1c-811d585a1a7d, resource={'id': '1ce51282-34b7-4e53-8b1c-811d585a1a7d', 'name': '', 'network_id': 'a4a2cb55-6e5c-436e-b2b0-f240149b240f', 'tenant_id': '', 'mac_address': 'fa:16:3e:6e:77:38', 'admin_state_up': True, 'status': 'ACTIVE', 'device_id': '02ca23c9-f068-4884-b5f1-89209b252b98', 'device_owner': 'network:router_gateway', 'standard_attr_id': 23, 'fixed_ips': [{'subnet_id': '8a949128-8d38-454f-b7ed-931aafdeccdf', 'ip_address': '172.24.5.37'}, {'subnet_id': 'b02a7718-b0a3-4b32-afcb-384ab2c14812', 'ip_address': '2001:db8::7e'}], 'allowed_address_pairs': [], 'extra_dhcp_opts': [], 'security_groups': [], 'description': '', 'binding:vnic_type': 'normal', 'binding:profile': {}, 'binding:host_id': 'np0038691690', 'binding:vif_type': 'ovs', 'binding:vif_details': {'port_filter': True, 'connectivity': 'l2', 'bridge_name': 'br-int', 'datapath_type': 'system'}, 'port_security_enabled': False, 'tags': [], 'created_at': '2024-10-02T19:06:13Z', 'updated_at': '2024-10-02T19:06:21Z', 'revision_number': 6, 'project_id': '', 'network': {'id': 'a4a2cb55-6e5c-436e-b2b0-f240149b240f', 'name': 'public', 'tenant_id': 'ae9f99f870e44c829d566f4038cd9fcd', 'admin_state_up': True, 'mtu': 1430, 'status': 'ACTIVE', 'subnets': ['8a949128-8d38-454f-b7ed-931aafdeccdf', 'b02a7718-b0a3-4b32-afcb-384ab2c14812'], 'standard_attr_id': 18, 'shared': False, 'availability_zone_hints': [], 'availability_zones': [], 'ipv4_address_scope': None, 'ipv6_address_scope': None, 'router:external': True, 'vlan_transparent': None, 'description': '', 'port_security_enabled': True, 'is_default': True, 'tags': [], 'created_at': '2024-10-02T19:06:07Z', 'updated_at': '2024-10-02T19:06:21Z', 'revision_number': 3, 'project_id': 'ae9f99f870e44c829d566f4038cd9fcd', 'provider:network_type': 'flat', 'provider:physical_network': 'public', 'provider:segmentation_id': None}}, resource_type=ports, if_exists=True), SetLSwitchPortCommand(_result=None, lport=1ce51282-34b7-4e53-8b1c-811d585a1a7d, external_ids_update=None, columns={'external_ids': {'neutron:port_name': '', 'neutron:device_id': '02ca23c9-f068-4884-b5f1-89209b252b98', 'neutron:project_id': '', 'neutron:cidrs': '172.24.5.37/24 2001:db8::7e/64', 'neutron:device_owner': 'network:router_gateway', 'neutron:subnet_pool_addr_scope4': '', 'neutron:subnet_pool_addr_scope6': '', 'neutron:network_name': 'neutron-a4a2cb55-6e5c-436e-b2b0-f240149b240f', 'neutron:security_group_ids': '', 'neutron:revision_number': '6', 'neutron:vnic_type': 'normal', 'neutron:port_capabilities': '', 'neutron:mtu': '', 'neutron:host_id': 'np0038691690'}, 'parent_name': [], 'tag': [], 'options': {'requested-chassis': 'np0038691690', 'mcast_flood_reports': 'true', 'exclude-lb-vips-from-garp': 'true', 'nat-addresses': 'router', 'router-port': 'lrp-1ce51282-34b7-4e53-8b1c-811d585a1a7d'}, 'enabled': True, 'port_security': [], 'type': 'router'}, if_exists=False), PgDelPortCommand(_result=None, port_group=neutron_pg_drop, lsp=['1ce51282-34b7-4e53-8b1c-811d585a1a7d'], if_exists=False)] exceeded timeout 180 seconds, cause: Result queue is empty

  I don't know if hash ring error is related to the original request
  lost / timed out. I don't see any errors in ovsdb-server log for NB.

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References

[Bug 2083570] [NEW] Neutron times out handling a request to create a network
From: Ihar Hrachyshka, 2024-10-02