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Completing post-reversion tasks

After reverting to an earlier version of ONTAP, you might need to perform additional tasks to provide cluster health and storage availability.

  1. Enabling automatic switchover for MetroCluster configurations
    This topic provides information regarding the additional tasks that you must perform after the reversion of MetroCluster configurations.
  2. Verifying cluster health (completing post-reversion tasks)
    Before and after you upgrade, revert, or downgrade a cluster, you should verify that the nodes are healthy and eligible to participate in the cluster, and that the cluster is in quorum.
  3. Verifying storage health (completing post-reversion tasks)
    Before and after you upgrade, revert, or downgrade a cluster, you should verify the status of your disks, aggregates, and volumes.
  4. Enabling and reverting LIFs to home ports (completing post-reversion tasks)
    During a reboot, some LIFs might have been migrated to their assigned failover ports. Before and after you upgrade, revert, or downgrade a cluster, you must enable and revert any LIFs that are not on their home ports.
  5. Preparing Snapshot copies after reverting
    After reverting to an earlier version of ONTAP, you must enable Snapshot copy policies to start creating Snapshot copies again.
  6. Verifying client access (CIFS and NFS)
    For the configured protocols, test access from CIFS and NFS clients to verify that the cluster is accessible.
  7. Verifying IPv6 firewall entries
    A reversion from any version of ONTAP 9 might result in missing default IPv6 firewall entries for some services in firewall policies. You need to verify that the required firewall entries have been restored to your system.
  8. Considerations for whether to manually update the SP firmware
    If the SP automatic update functionality is enabled (the default), The SP firmware is automatically updated to the newest compatible version that is supported by the ONTAP version you reverted or downgraded to.