HP 3PAR Operating System Software - Manual (Page 169)

3. Verify the reversal of volume group roles by performing the following actions:
a.
Issue the showrcopy command on the target system (System2).
b. In the Group Information area, check that the Role column for the reversed volume
group displays Primary.
For example, the showrcopy output for System2 shows that the role of sync_group_1.r96
is now Primary:
# showrcopy
Remote Copy System Information
Status: Started, Normal
Target Information
Name ID Type Status Options Policy
System1 2 IP mirror_config
Link Information
Target Node Address Status Options
System1 0 10.100.33.96 Up
System1 1 10.101.33.96 Up
receive 0 10.100.33.96 Up
receive 1 10.101.33.96 Up
Group Information
Name Target Status Role Mode Options
sync_group_1.r96 System1 Started Primary Sync
LocalVV ID RemoteVV ID SyncStatus LastSyncTime
remotevv.0 375 localvv.0 413 Synced N/A
remotevv.1 376 localvv.1 414 Synced N/A
Name Target Status Role Mode Options
sync_group_2 System1 Started Primary Sync
LocalVV ID RemoteVV ID SyncStatus LastSyncTime
localvv.0 385 remotevv.0 423 Synced N/A
localvv.1 386 remotevv.1 424 Synced Thu Dec 14 17:51:44 PST 2006
NOTE: It is possible for the reversal of volume group roles to fail due to a timeout during
the switchover operation. If the role of the reversed volume group is displayed as
Primary-Rev
, you must manually complete the reverse operation on the volume group by
running the following command on the failover system (System2):
setrcopygroup reverse -natural
4. (Optional) To back up data in the reversed volume groups, export the reversed virtual volumes
(for example, remotevv.0 and remotevv.1) as read/write snapshots.
Troubleshooting Non-disruptive Failover
If the switchover operation does not result in host I/O traffic migrating seamlessly to the target
array, check the following settings in the remote-copy configuration:
•
Confirm that the remote-copy group is configured for synchronous mode operation.
•
Confirm that the remote-copy group is synced.
•
Confirm that the primary and secondary volumes share a common WWN.
Performing a Non-disruptive Failover 169