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If the system-level diagnostics tests...
Switching back aggregates in a two-node MetroCluster configuration
After you have completed the FRU replacement in a two-node MetroCluster configuration, you can perform
the MetroCluster operation. This returns the configuration to its normal operating state, with the sync-source
storage virtual machines (SVMs) on the formerly impaired site now active and serving data from the local disk
pools.
About this task
This task only applies to two-node MetroCluster configurations.
Procedure
1. Verify that all nodes are in the enabled state: metrocluster node show
cluster_B::>
metrocluster node show
DR
Group Cluster Node
----- ------- -------------- -------------- --------- --------------------
1
cluster_A
controller_A_1 configured
cluster_B
controller_B_1 configured
2 entries were displayed.
2. Verify that resynchronization is complete on all SVMs: metrocluster vserver show
3. Verify that any automatic LIF migrations being performed by the healing operations were completed
successfully: metrocluster check lif show
4. Perform the switchback by using the metrocluster switchback command from any node in the
surviving cluster.
5. Verify that the switchback operation has completed: metrocluster show
The switchback operation is still running when a cluster is in the waiting-for-switchback state:
cluster_B::> metrocluster show
Cluster
-------------------- -------------------
Local: cluster_B configured
Remote: cluster_A configured
The switchback operation is complete when the clusters are in the normal state.:
cluster_B::> metrocluster show
Cluster
-------------------- -------------------
Local: cluster_B configured
Remote: cluster_A configured
If a switchback is taking a long time to finish, you can check on the status of in-progress baselines by using
the metrocluster config-replication resync-status show command.
6. Reestablish any SnapMirror or SnapVault configurations.
Configuration
DR
State
Mirroring Mode
enabled
heal roots completed
enabled
waiting for switchback recovery
Configuration State
Mode
---------
switchover
waiting-for-switchback
Configuration State
Mode
---------
normal
normal
Then...
a. Exit Maintenance mode: halt
b. Perform a clean shutdown, and then disconnect
the power supplies.
c. Verify that you have observed all of the
considerations identified for running system-
level diagnostics, that cables are securely
connected, and that hardware components are
properly installed in the storage system.
d. Reconnect the power supplies, and then power
on the storage system.
e. Rerun the system-level diagnostics test.
| Replacing the chassis |
12
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