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NetApp Stage KB

MetroCluster Automatic Unplanned Switchover - AutoSupport message

Last Updated:


Applies to

  • MetroCluster
  • ONTAP 9
  • Automatic Switchover complete
  • callhome.mcc.auso.complete:alert

Event Summary

  • This message occurs when a MetroCluster automatic unplanned switchover operation has completed.
  • The most common scenarios leading to a switchover are:

    • Loss of power
    • Loss of connectivity to storage backend
    • A hardware issue
    • A software issue


Event Log

event log show -event *auso.complete*

ClusterA-01 ALERT         callhome.mcc.auso.complete: Call home for METROCLUSTER AUTOMATIC UNPLANNED SWITCHOVER COMPLETE

event log show -event *triggered* -severity *notice*

Time                Node             Severity      Event
------------------- ---------------- ------------- ---------------------------
mm/dd/yyyy hh:mm:ss  ClusterA-01     NOTICE        mcc.auso.triggered: The node has triggered an Automatic Unplanned Switchover of the DR partner. Reason: DR Partner Panic. If Automatic Unplanned Switchover was triggered because of heartbeat loss, any ongoing dump on the partner may be aborted.

Command Line

Check the status of the switchover from the cluster that triggered the switchover:

metrocluster operation show

       Operation: switchover

           State: successful
      Start Time: mm/dd/yyyy hh:mm:ss
        End Time: mm/dd/yyyy hh:mm:ss
          Errors: -

metrocluster node show

DR                               Configuration  DR
Group Cluster Node               State          Mirroring Mode
----- ------- ------------------ -------------- --------- --------------------
1     ClusterA
              ClusterA-01   configured     enabled   switchover completed
              ClusterB-01   unreachable    -         switched over


  1. Determine the cause of the unexpected switchover.

  2. Once the cause is understood, perform the appropriate recovery steps based on the link below:

  3. Please contact NetApp Technical Support and reference this article if further assistance is required.

Additional Information

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.