Uploaded image for project: 'OpenShift Bugs'
  1. OpenShift Bugs
  2. OCPBUGS-41821

Document that Live migration gets stuck when the ConfigMap MTU is absent in KCS

XMLWordPrintable

    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major Major
    • None
    • 4.16.z
    • Documentation / SDN
    • No
    • 2
    • OSDOCS Sprint 259, OSDOCS Sprint 260
    • 2
    • Rejected
    • False
    • Hide

      None

      Show
      None
    • Release Note Not Required
    • In Progress

      Description of problem:

      Live migration gets stuck when the ConfigMap MTU is absent. The ConfigMap mtu should be created by the mtu-prober job at the installation time since 4.11. But if the cluster was upgrade from a very early releases, such as 4.4.4, the ConfigMap mtu may be absent.

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

      4.16.rc2

      How reproducible:

       

      Steps to Reproduce:

      1. build a 4.16 cluster with OpenShiftSDN
2. remove the configmap mtu from the namespace cluster-network-operator.
3. start live migration.

      Actual results:

      Live migration gets stuck with error

NetworkTypeMigrationFailed
Failed to process SDN live migration (configmaps "mtu" not found)

      Expected results:

      Live migration finished successfully.

      Additional info:

      A workaround is to create the configmap mtu manually before starting live migration.

      Documentation is needed for this bug in the https://access.redhat.com/articles/7056842 KCS 

              rhn-support-stevsmit Steven Smith
              pliurh Peng Liu
              Weibin Liang Weibin Liang
              Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

                Created:
                Updated:
                Resolved: