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[John Davidge <john.davidge@xxxxxxxxxxxxx>]

** Project changed: neutron => networking-sfc

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https://bugs.launchpad.net/bugs/1660893

Title:
  Neutron SFC port chain delete fails

Status in networking-sfc:
  New

Bug description:
  I'm experimenting with Neutron SFC. The chain creation happens successfully whereas the chain deletion doesn't succeed always. For the first couple of times, I was able to delete the chains successfully however once it fails, it mostly never succeeds again.
  When it failed for the first time, I had to manually delete the port chain entry from DB. Even though the successive chain creations happen successfully, the deletion continuously fails. Once I remove the port chain entry from DB, other things like flow classifier, port pairs, port pair groups can be removed through CLI.

  Environment: Multi-node devstack with 1 controller and 2 computes where VMs are launched in the same compute.
  OS: Ubuntu 16.04
  Kernel: 4.4.0-59-generic
  OVS: 2.6.1
  Devstack and SFC: Newton
  All my neutron agents are alive.

  Steps to create chain
      openstack network create net11
      openstack subnet create --subnet-range 11.0.0.0/24 --network net11 sub11
      openstack network create net12
      openstack subnet create --subnet-range 12.0.0.0/24 --network net12 sub12

      openstack router create sfc-router
      openstack router add subnet sfc-router sub11
      openstack router add subnet sfc-router sub12

      openstack port create --network net11 p1
      openstack port create --network net12 p2
      openstack server create --nic port-id=p1 --nic port-id=p2 --flavor 3 --image vyos sf-vm

      sleep 5
      openstack port pair create --ingress p1 --egress p2 pp1
      openstack port pair group create --port-pair pp1 ppg1

      openstack flow classifier create --source-ip-prefix 11.0.0.0/24 --destination-ip-prefix\
       12.0.0.0/24 --source-port 1:65535 --destination-port 80:80  --protocol TCP \
       --logical-source-port $(neutron port-list | grep \"11.0.0.1\" | awk '{print $2}') fc1

      openstack port chain create --port-pair-group ppg1 --flow-
  classifier fc1 pc1

  Steps to delete chain
      openstack server delete sf-vm

      openstack port chain delete pc1
      openstack flow classifier delete fc1
      openstack port pair group delete ppg1
      openstack port pair delete pp1
      openstack port delete p1
      openstack port delete p2

      openstack router remove subnet sfc-router sub11
      openstack router remove subnet sfc-router sub12
      openstack subnet delete sub11
      openstack subnet delete sub12
      openstack router delete sfc-router
      openstack network delete net11
      openstack network delete net12

  Expected Output
      Successful completion of step "openstack port chain delete pc1" and other obvious success messages.

  Actual Output
      delete_port_chain failed.
      Neutron server returns request_ids: ['req-eea26895-dcf5-4c31-a858-4da5ffe40b14']

  This is a blocker for me.

  Neutron Log: http://paste.openstack.org/show/597125/
  Controller OVS agent LOG: http://paste.openstack.org/show/597126/
  Compute OVS agent LOG: http://paste.openstack.org/show/597127/

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