yahoo-eng-team team mailing list archive

[Robert van Leeuwen <1383674@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

If you reload/restart the neutron-openvswitch daemon it will first throw away all existing flows.
This will break all networking until the flows are re-created.

It can take some time before everything is back in the flow table on
machines with quite a bit of instances or a busy neutron server.

Please make the clearing of the flows optional during a restart.

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: neutron-openvswitch-agent

** Tags added: neutron-openvswitch-agent

** Summary changed:

- Restarting openvswitch daemon causes network hiccup by throwing away all flows
+ Restarting neutron openvswitch agent causes network hiccup by throwing away all flows

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https://bugs.launchpad.net/bugs/1383674

Title:
  Restarting neutron openvswitch agent causes network hiccup by throwing
  away all flows

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  If you reload/restart the neutron-openvswitch daemon it will first throw away all existing flows.
  This will break all networking until the flows are re-created.

  It can take some time before everything is back in the flow table on
  machines with quite a bit of instances or a busy neutron server.

  Please make the clearing of the flows optional during a restart.

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