I am planning to operate nodes using HWOL and OVN Controller and nodes using SR-IOV simultaneously in the OVN environment.
The test content is as follows.
** Controller server **
The ml2 mechanism_drivers were specified as follows:
```
[ml2]
mechanism_drivers = sriovnicswitch,ovn
```
Upon checking the log, the driver was confirmed to be loaded normally.
```
2023-07-19 00:44:37.403 1697414 INFO neutron.plugins.ml2.managers [-] Configured mechanism driver names: ['ovn', 'sriovnicswitch']
2023-07-19 00:44:37.464 1697414 INFO neutron.plugins.ml2.managers [-] Loaded mechanism driver names: ['ovn', 'sriovnicswitch']
2023-07-19 00:44:37.464 1697414 INFO neutron.plugins.ml2.managers [-] Registered mechanism drivers: ['ovn', 'sriovnicswitch']
2023-07-19 00:44:37.464 1697414 INFO neutron.plugins.ml2.managers [-] No mechanism drivers provide segment reachability information for agent scheduling.
2023-07-19 00:44:38.358 1697414 INFO neutron.plugins.ml2.managers [req-bc634856-2d9a-44d0-ae0e-351b440a2a0b - - - - -] Initializing mechanism driver 'ovn'
2023-07-19 00:44:38.378 1697414 INFO neutron.plugins.ml2.managers [req-bc634856-2d9a-44d0-ae0e-351b440a2a0b - - - - -] Initializing mechanism driver 'sriovnicswitch'
```
** Compute **
nova.conf
```
[pci]
passthrough_whitelist = { "devname": "enp94s0f1np1", "physical_network": "physnet1" }
```
plugin/ml2/sriov-agent.ini
```
[DEFAULT]
debug = true
[securitygroup]
firewall_driver = neutron.agent.firewall.NoopFirewallDriver
[sriov_nic]
physical_device_mappings = physnet1:enp94s0f1np1
```
Neutron Agent status
```
+--------------------------------------+------------------------------+-------------------+-------------------+-------+-------+----------------------------+
| ID | Agent Type | Host | Availability Zone | Alive | State | Binary |
+--------------------------------------+------------------------------+-------------------+-------------------+-------+-------+----------------------------+
| 24e9395c-379f-4afd-aa84-ae0d970794ff | NIC Switch agent | Qacloudhost06 | None | :-) | UP | neutron-sriov-nic-agent |
| 43ba481c-c0f2-49bc-a34a-c94faa284ac7 | NIC Switch agent | Qaamdhost02 | None | :-) | UP | neutron-sriov-nic-agent |
| 4c1a6c78-e58a-48d9-aa4a-abdf44d2f359 | NIC Switch agent | Qacloudhost07 | None | :-) | UP | neutron-sriov-nic-agent |
| 534f0946-6eb3-491f-a57d-65cbc0133399 | NIC Switch agent | Qacloudhost02 | None | :-) | UP | neutron-sriov-nic-agent |
| 2275f9d4-7c69-51db-ae71-b6e0be15e9b8 | OVN Metadata agent | Qacloudhost05 | | :-) | UP | neutron-ovn-metadata-agent |
| 92a7b8dc-e122-49c8-a3bc-ae6a38b56cc0 | OVN Controller Gateway agent | Qacloudhost05 | | :-) | UP | ovn-controller |
| c3a1e8fe-8669-5e7a-a3d7-3a2b638fae26 | OVN Metadata agent | Qaamdhost02 | | :-) | UP | neutron-ovn-metadata-agent |
| d203ff10-0835-4d7e-bc63-5ff274ade5a3 | OVN Controller agent | Qaamdhost02 | | :-) | UP | ovn-controller |
| fc4c5075-9b44-5c21-a24d-f86dfd0009f9 | OVN Metadata agent | Qacloudhost02 | | :-) | UP | neutron-ovn-metadata-agent |
| 6666bed0-1519-47f8-b52f-3a9116e1408f | OVN Controller Gateway agent | Qacloudhost02 | | :-) | UP | ovn-controller |
+--------------------------------------+------------------------------+-------------------+-------------------+-------+-------+----------------------------+
```
When creating a vm, Neutron error log
```
2023-07-19 02:44:30.463 1725695 ERROR neutron.plugins.ml2.managers [req-9204d6f7-ddc3-44e2-878c-bfa9c3f761ef fbec686e249e4818be7a686833140326 7a4dd87db099460795d775b055a648ea - default default] Mechanism driver 'ovn' failed in update_port_precommit: neutron_lib.exceptions.InvalidInput: Invalid input for operation: Invalid binding:profile. too many parameters.
2023-07-19 02:44:30.463 1725695 ERROR neutron.plugins.ml2.managers Traceback (most recent call last):
2023-07-19 02:44:30.463 1725695 ERROR neutron.plugins.ml2.managers File "/usr/lib/python3/dist-packages/neutron/plugins/ml2/managers.py", line 482, in _call_on_drivers
2023-07-19 02:44:30.463 1725695 ERROR neutron.plugins.ml2.managers getattr(driver.obj, method_name)(context)
2023-07-19 02:44:30.463 1725695 ERROR neutron.plugins.ml2.managers File "/usr/lib/python3/dist-packages/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py", line 792, in update_port_precommit
2023-07-19 02:44:30.463 1725695 ERROR neutron.plugins.ml2.managers ovn_utils.validate_and_get_data_from_binding_profile(port)
2023-07-19 02:44:30.463 1725695 ERROR neutron.plugins.ml2.managers File "/usr/lib/python3/dist-packages/neutron/common/ovn/utils.py", line 266, in validate_and_get_data_from_binding_profile
2023-07-19 02:44:30.463 1725695 ERROR neutron.plugins.ml2.managers raise n_exc.InvalidInput(error_message=msg)
2023-07-19 02:44:30.463 1725695 ERROR neutron.plugins.ml2.managers neutron_lib.exceptions.InvalidInput: Invalid input for operation: Invalid binding:profile. too many parameters.
2023-07-19 02:44:30.463 1725695 ERROR neutron.plugins.ml2.managers
```
When the ovn is removed from the Mechanisum driver setting, the vm is created normally.
```
[ml2]
mechanism_drivers = sriovnicswitch
```
