This section explains how VVR processes an incoming read for a Primary cluster containing two nodes. In a shared-disk group environment, VVR processes an incoming read on the master in the same way as in a private disk group environment.
Figure: Example - how VVR processes a read on the non-logowner shows how VVR processes an incoming read on the non-logowner.
As shown in the illustration, Figure: Example - how VVR processes a read on the non-logowner, VVR processes an incoming read on the non-logowner, (Node B) with the following steps in the order shown:
VVR receives a read from the application on the non-logowner, Node B.
Node B sends a request for read permission to the logowner, Node A.
Node B receives permission to read from Node A.
Node B reads from the data volumes.
Node B completes read to the application.