Testing takeover and giveback

After you configure all aspects of your HA pair, you need to verify that it is operating as expected in maintaining uninterrupted access to both nodes' storage during takeover and giveback operations. Throughout the takeover process, the local (or takeover) node should continue serving the data normally provided by the partner node. During giveback, control and delivery of the partner's storage should return to the partner node.

1. Check the cabling on the HA interconnect cables to make sure that they are secure.
2. Verify that you can create and retrieve files on both nodes for each licensed protocol.
3. Enter the following command: storage failover takeover -ofnode partner_node
   See the man page for command details.
4. Enter either of the following commands to confirm that takeover occurred: storage failover show-takeoverstorage failover show
   Example
   If you have the storage failover command's -auto-giveback option enabled:

   cluster::> storage failover show
                  Takeover
   Node   Partner Possible 	State Description
   ------ ------- --------- -----------------
   node1  node2     -       Waiting for giveback
   node2  node1   false     In takeover, Auto giveback will be
                             initiated in number of seconds seconds

   Example
   If you have the storage failover command's -auto-giveback option disabled:

   cluster::> storage failover show
                  Takeover
   Node   Partner Possible 	State Description
   ------ ------- --------- -----------------
   node1  node2   -         Waiting for giveback
   node2  node1   false     In takeover.

5. Enter the following command to display all the disks that belong to the partner node (Node2) that the takeover node (Node1) can detect: storage disk show -home node2 -ownership

   The following command displays all disks belonging to Node2 that Node1 can detect:

   cluster::> storage disk show -home node2 -ownership
     
   Disk   Aggregate Home  Owner DR Home Home ID    Owner ID   DR Home ID Reserver   Pool
   ------ --------- ----- ----- ------- ---------- ---------- ---------- ---------- -----
   1.0.2  -         node2 node2 -       4078312453 4078312453 -          4078312452 Pool0
   1.0.3  -         node2 node2 -       4078312453 4078312453 -          4078312452 Pool0
   ...
   

6. Enter the following command to confirm that the takeover node (Node1) controls the partner node's (Node2) aggregates: aggr show -fields home-id,home-name,is-home

   cluster::> aggr show -fields home-id,home-name,is-home
   aggregate home-id    home-name is-home 
   --------- ---------- --------- ---------
   aggr0_1   2014942045 node1     true
   aggr0_2   4078312453 node2     false
   aggr1_1   2014942045 node1     true
   aggr1_2   4078312453 node2     false
   4 entries were displayed.

   During takeover, the is-home value of the partner node's aggregates is false.
7. Give back the partner node's data service after it displays the Waiting for giveback message by entering the following command: storage failover giveback -ofnode partner_node
8. Enter either of the following commands to observe the progress of the giveback operation: storage failover show-givebackstorage failover show
9. Proceed depending on whether you saw the message that giveback was completed successfully:

   If takeover and giveback...	Then...
   Is completed successfully	Repeat Step 2 through Step 8 on the partner node.
   Fails	Correct the takeover or giveback failure and then repeat this procedure.