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[Launchpad Bug Tracker <1978775@xxxxxxxxxxxxxxxxxx>]

[Expired for neutron because there has been no activity for 60 days.]

** Changed in: neutron
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1978775

Title:
  ovn: ovs-system: deferred action limit reached, drop recirc action

Status in neutron:
  Expired

Bug description:
  OpenStack release - Wallaby
  OVN version 21.06
  OVS version 2.16
  CentOS Stream 8, various kernel versions

  Seeing a lot of ovs-system: deferred action limit reached, drop recirc action on the active gateway chassis.
  Also the dropped packets counter for breth2-ovs (which is the external bridge) is increasing over time.

  [ 3435.828519] openvswitch: ovs-system: deferred action limit reached, drop recirc action
  [ 3436.820595] openvswitch: ovs-system: deferred action limit reached, drop recirc action
  [ 3436.964035] openvswitch: ovs-system: deferred action limit reached, drop recirc action
  [ 3437.620312] openvswitch: ovs-system: deferred action limit reached, drop recirc action
  [ 3437.706389] openvswitch: ovs-system: deferred action limit reached, drop recirc action
  [ 3438.153331] openvswitch: ovs-system: deferred action limit reached, drop recirc action
  [ 3438.346396] openvswitch: ovs-system: deferred action limit reached, drop recirc action
  [ 3440.328273] net_ratelimit: 2 callbacks suppressed
  [ 3440.333636] openvswitch: ovs-system: deferred action limit reached, drop recirc action
  [ 3462.687204] openvswitch: ovs-system: deferred action limit reached, drop recirc action

  Found https://www.mail-archive.com/ovs-dev@xxxxxxxxxxxxxxx/msg53195.html and https://mail.openvswitch.org/pipermail/ovs-discuss/2021-August/051340.html which might be related.
  I'm not sure if that's Neutron bug or OVN bug.

  It's not a blocker, or a huge problem - everything works properly.

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