And now I'm under a HACMP Cluster (version 7.1) with 2 nodes (Node1 active / Node2 passive), and 1 Resource Group on active node (Node1), which is UNMANAGED for boths nodes.
So, all VG Data are on Node1.
Then I had a JFS2 FileSystem full (located on one of these VG Data called "VG_Clust") that I had to increase it with LVM commands (chfs), not CSPOC ones (cl_chfs) and this worked fine.

This "VG_Clust" is in "read/write" permission, "Enhanced-Capable" and VG Mode "Concurrent" .

In case of Failover to Node2, should I need to "Verify and Synchronize HACMP" or perform Script Failure from Node1 ?

For so, this requires HACMP to be down ?

Could you confirm if these steps below is correct ?
smitty hacmp -> Cluster Applications and Resources -> Verify and Synchronize Cluster Configuration
 

Your Help would be quite appreciated.
 

Kind Regards