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  1. OpenShift Bugs
  2. OCPBUGS-57484

after OVN-K live migration br0 is still present

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      [id="ocp-4-20-migration-configure-ovs-nmstate_{context}"]
      ==== Support for migrating a configured br-ex bridge to NMState

      If you used the `configure-ovs.sh` shell script to set a `br-ex` bridge during cluster installation, you can migrate the `br-ex` bridge to NMState as a postinstallation task. For more information, see xref:../../installing/installing_bare_metal/bare-metal-postinstallation-configuration.adoc#migrating-br-ex-bridge-nmstate.adoc_bare-metal-postinstallation-configuration[Migrating a configured br-ex bridge to NMState]
      Show
      [id="ocp-4-20-migration-configure-ovs-nmstate_{context}"] ==== Support for migrating a configured br-ex bridge to NMState If you used the `configure-ovs.sh` shell script to set a `br-ex` bridge during cluster installation, you can migrate the `br-ex` bridge to NMState as a postinstallation task. For more information, see xref:../../installing/installing_bare_metal/bare-metal-postinstallation-configuration.adoc#migrating-br-ex-bridge-nmstate.adoc_bare-metal-postinstallation-configuration[Migrating a configured br-ex bridge to NMState]
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      Description of problem:

      After OpenShiftSDN to OVN-K live migration with custom NMstate, br0 is left on the system.

      
- name: br0
  type: ovs-interface
  state: ignore
  mtu: 1450
  ipv4:
    enabled: false
  ipv6:
    enabled: false
  controller: br0
  accept-all-mac-addresses: false

      Version-Release number of selected component (if applicable):

      4.16.38

      How reproducible:

      
Once

      Steps to Reproduce:

      1. install OpenShift SDN 4.14.50 and configure balance-slb OVS bonds using nmstate https://github.com/RHsyseng/rhcos-slb/blob/simplify-networking/README.md
2. upgrade to 4.15
3. upgrade to 4.16.38
4. apply OVN-K live migration workarounds https://github.com/rbbratta/rhcos-slb/blob/sdn-to-ovn-migration/sdn-to-ovn/README.md
5. live migrate to OVN-K
6. wait

      Actual results:

      br0 present
      Expected results:

      br0 not present
      Additional info:

      Custom NMstate was used to remove extra brcnv, this occurs after the first reboot?

        - name: brcnv
    type: ovs-interface
    state: absent

      At what point in the live-migration can we remove br0?

              bnemec@redhat.com Benjamin Nemec
              rbrattai@redhat.com Ross Brattain
              None
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              Ross Brattain Ross Brattain
              Darragh Fitzmaurice Darragh Fitzmaurice
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                Created:
                Updated: