Verifying healing and manual switchback

You can test the healing and manual switchback operations to verify that data availability is not affected (except for SMB and Solaris FC configurations) by switching back the cluster to the original data center after a negotiated switchover.

1. Verify that healing is completed: metrocluster node show
   The following example shows the successful completion of the command:

   cluster_A::> metrocluster node show
   DR                               Configuration  DR
   Group Cluster Node               State          Mirroring Mode
   ----- ------- ------------------ -------------- --------- --------------------
   1     cluster_A
                 node_A_1         configured     enabled   heal roots completed
         cluster_B
                 node_B_2         unreachable    -         switched over
   42 entries were displayed.metrocluster operation show
   

2. Verify that all aggregates are mirrored: storage aggregate show
   The following example shows that all aggregates have a RAID Status of mirrored:

   cluster_A::> storage aggregate show
   cluster Aggregates:
   Aggregate Size     Available Used% State   #Vols  Nodes       RAID Status
   --------- -------- --------- ----- ------- ------ ----------- ------------
   data_cluster
               4.19TB    4.13TB    2% online       8 node_A_1    raid_dp,
                                                                 mirrored,
                                                                 normal
   root_cluster
              715.5GB   212.7GB   70% online       1 node_A_1    raid4,
                                                                 mirrored,
                                                                 normal
   cluster_B Switched Over Aggregates:
   Aggregate Size     Available Used% State   #Vols  Nodes       RAID Status
   --------- -------- --------- ----- ------- ------ ----------- ------------
   data_cluster_B
               4.19TB    4.11TB    2% online       5 node_A_1    raid_dp,
                                                                 mirrored,
                                                                 normal
   root_cluster_B    -         -     - unknown      - node_A_1   -
   

3. Boot nodes from the disaster site.
4. Check the status of switchback recovery: metrocluster node show

   cluster_A::> metrocluster node show
   DR                               Configuration  DR
   Group Cluster Node               State          Mirroring Mode
   ----- ------- ------------------ -------------- --------- --------------------
   1     cluster_A
                node_A_1            configured     enabled   heal roots completed
         cluster_B
                node_B_2            configured     enabled   waiting for switchback
                                                             recovery
   2 entries were displayed.
   

5. Perform the switchback: metrocluster switchback

   cluster_A::> metrocluster switchback 
   [Job 938] Job succeeded: Switchback is successful.Verify switchback

6. Confirm status of the nodes: metrocluster node show

   cluster_A::> metrocluster node show
   DR                               Configuration  DR
   Group Cluster Node               State          Mirroring Mode
   ----- ------- ------------------ -------------- --------- --------------------
   1     cluster_A
                 node_A_1         configured     enabled   normal
         cluster_B
                 node_B_2         configured     enabled   normal
   
   2 entries were displayed.
   

7. Confirm status of the metrocluster operation: metrocluster operation show
   The output should show a successful state.

   cluster_A::> metrocluster operation show
     Operation: switchback
         State: successful
    Start Time: 2/6/2016 13:54:25
      End Time: 2/6/2016 13:56:15
        Errors: -