Neutron 20.2 Unknown Chassis Issue

[Ammad Ali]

Hi,

Today I have upgraded by openstack neutron to 20.2 and OVN to 22.03 on ubuntu 20.04. After the upgrade, I am getting below mentioned logs in northd logs.

2022-09-08T23:08:15.791Z|00064|northd|WARN|Dropped 41 log messages in last 206 seconds (most recently, 201 seconds ago) due to excessive rate
2022-09-08T23:08:15.791Z|00065|northd|WARN|Unknown chassis '' set as options:requested-chassis on LSP '1332fae5-747f-46bd-bd2a-6c3dd47c5b82'.
2022-09-08T23:10:40.927Z|00066|northd|WARN|Dropped 20 log messages in last 145 seconds (most recently, 145 seconds ago) due to excessive rate
2022-09-08T23:10:40.928Z|00067|northd|WARN|Unknown chassis '' set as options:requested-chassis on LSP '1332fae5-747f-46bd-bd2a-6c3dd47c5b82'.
2022-09-08T23:13:12.395Z|00068|northd|WARN|Dropped 62 log messages in last 151 seconds (most recently, 136 seconds ago) due to excessive rate
2022-09-08T23:13:12.395Z|00069|northd|WARN|Unknown chassis '' set as options:requested-chassis on LSP '1332fae5-747f-46bd-bd2a-6c3dd47c5b82'.
2022-09-08T23:15:23.025Z|00070|northd|WARN|Dropped 272 log messages in last 131 seconds (most recently, 125 seconds ago) due to excessive rate
2022-09-08T23:15:23.026Z|00071|northd|WARN|Unknown chassis '' set as options:requested-chassis on LSP '1332fae5-747f-46bd-bd2a-6c3dd47c5b82'.
2022-09-08T23:24:46.723Z|00072|northd|WARN|Dropped 83 log messages in last 564 seconds (most recently, 564 seconds ago) due to excessive rate
2022-09-08T23:24:46.723Z|00073|northd|WARN|Unknown chassis '' set as options:requested-chassis on LSP '1332fae5-747f-46bd-bd2a-6c3dd47c5b82'.

Digging it further these LSPs belongs to unbound port i.e the address x.x.x.2 reserve for that port.

I have checked this port on OVN and its not showing the chassis binding. I think thats why its generating those logs.

+-------------------------+----------------------------------------------------------------------------+
| Field | Value |
+-------------------------+----------------------------------------------------------------------------+
| admin_state_up | UP |
| allowed_address_pairs | |
| binding_host_id | |
| binding_profile | |
| binding_vif_details | |
| binding_vif_type | unbound |
| binding_vnic_type | normal |
| created_at | 2022-09-08T22:13:44Z |
| data_plane_status | None |
| description | |
| device_id | ovnmeta-e08fb6c2-4a69-4eab-8a04-4be0906d7a69 |
| device_owner | network:distributed |
| device_profile | None |
| dns_assignment | None |
| dns_domain | None |
| dns_name | None |
| extra_dhcp_opts | |
| fixed_ips | ip_address='172.16.10.2', subnet_id='2f0e63d0-4e91-4353-82e9-f0752222e443' |
| id | d0990b61-8bf8-4ad6-a0a8-a3ccb406ed5f |
| ip_allocation | immediate |
| mac_address | fa:16:3e:bc:41:12 |
| name | |
| network_id | e08fb6c2-4a69-4eab-8a04-4be0906d7a69 |
| numa_affinity_policy | None |
| port_security_enabled | False |
| project_id | 3ba8f3bb907448ef8e8f423f883a5303 |
| propagate_uplink_status | None |
| qos_network_policy_id | None |
| qos_policy_id | None |
| resource_request | None |
| revision_number | 2 |
| security_group_ids | |
| status | DOWN |
| tags | |
| trunk_details | None |
| updated_at | 2022-09-08T22:13:45Z |
+-------------------------+----------------------------------------------------------------------------+

Ammad Ali

[Rodolfo Alonso (rodolfo-alonso-hernandez)]

Hello Ammad:

This issue seems to be a problem in the core OVN code, in the version you are using. However I don't see this warning message in 22.03 but in 22.06 [1]. Furthermore, this code has been replaced in main branch with [2].

I would recommend you to create an issue request in https://github.com/ovn-org/ovn with the provided information. The port you are referring is a metadata port and should not have a chassis assigned.

You should also downgrade the OVN version (please confirm which one you are using) temporarily.

Regards.

[1]https://github.com/ovn-org/ovn/commit/c7b1d247e58e227e9f4209288e83f72a6d2e46b9
[2]https://github.com/ovn-org/ovn/commit/fa8c591fa2a7f0d5bcc83231a386bda13e78226b

[Ammad Ali (syedammad83)]

Hi,

We are using OVN 22.03 and seeing these logs.

I'll create an issue with OVN on github.

[Lajos Katona (lajos-katona)]

I hanged it to invalid, feel free to reopen it if you have more details that point to that direction