Overview of Serviceguard NFS

Supported Configurations

Simple Failover to an Idle NFS Server

Figure 1-1 shows a simple failover from an active NFS server node to an idle NFS server node.

Figure 1-1

Simple Failover to an Idle NFS Server

 

 

 

 

Before Failover:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Node_A

 

 

 

 

Node_B

 

 

 

 

 

 

Pkg_1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

disks

 

 

 

 

 

 

 

 

 

 

After Failover:

 

 

 

 

 

 

 

 

 

 

 

Node_A

 

 

 

Node_B

 

 

 

 

 

 

Pkg_1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

disks

 

 

 

 

 

 

 

 

 

 

 

 

 

Node_A is the primary node for NFS server package Pkg_1. When Node_A fails, Node_B adopts Pkg_1. This means that Node_B locally mounts the file systems associated with Pkg_1 and exports them. Both Node_A and Node_B must have access to the disks that hold the file systems for Pkg_1.

Chapter 1

13