Shutting down a node in a two-node MetroCluster configuration running ONTAP

To shut down the impaired node, you must determine the status of the node and, if necessary, switch over the node so that the healthy node continues to serve data from the impaired node storage.

About this task

You must leave the power supplies turned on at the end of this procedure to provide power to the healthy node.

Steps

  1. Check the MetroCluster status to determine whether the impaired node has automatically switched over to the healthy node: metrocluster show
  2. Depending on whether an automatic switchover has occurred, proceed according to the following table:
    If the impaired node... Then...
    Has automatically switched over Proceed to the next step.
    Has not automatically switched over Perform a planned switchover operation from the healthy node: metrocluster switchover
    Has not automatically switched over and planned switchover with the metrocluster switchover command fails
    1. Halt the impaired node: system node halt
    2. Perform a forced switchover operation: metrocluster switchover -forced on disaster true
  3. Resynchronize the data aggregates by running the metrocluster heal -phase aggregates command from the surviving cluster.
    Example
    controller_A_1::> metrocluster heal -phase aggregates 
    [Job 130] Job succeeded: Heal Aggregates is successful.
    

    If the healing is vetoed, you have the option of reissuing the metrocluster heal command with the -override-vetoes parameter. If you use this optional parameter, the system overrides any soft vetoes that prevent the healing operation.

  4. Verify that the operation has been completed by using the metrocluster operation show command.
    Example
    controller_A_1::> metrocluster operation show
        Operation: heal-aggregates
          State: successful
    Start Time: 7/25/2016 18:45:55
       End Time: 7/25/2016 18:45:56
         Errors: -
    
  5. Check the state of the aggregates by using the storage aggregate show command.
    Example
    controller_A_1::> storage aggregate show
    Aggregate     Size Available Used% State   #Vols  Nodes            RAID Status
    --------- -------- --------- ----- ------- ------ ---------------- ------------
    ...
    aggr_b2    227.1GB   227.1GB    0% online       0 mcc1-a2          raid_dp, mirrored, normal...
  6. Heal the root aggregates by using the metrocluster heal -phase root-aggregates command.
    Example
    mcc1A::> metrocluster heal -phase root-aggregates
    [Job 137] Job succeeded: Heal Root Aggregates is successful
    

    If the healing is vetoed, you have the option of reissuing the metrocluster heal command with the –override-vetoes parameter. If you use this optional parameter, the system overrides any soft vetoes that prevent the healing operation.

  7. Verify that the heal operation is complete by using the metrocluster operation show command on the destination cluster:
    Example
    mcc1A::> metrocluster operation show
      Operation: heal-root-aggregates
          State: successful
     Start Time: 7/29/2016 20:54:41
       End Time: 7/29/2016 20:54:42
         Errors: -
    
    
  8. On the impaired controller module, disconnect the power supplies.