Managing Serviceguard NFS for Linux, September 2006

Serviceguard NFS for LINUX Introduction
Supported Configurations
Chapter 112
Cascading Failover with Multiple Adoptive Nodes
Consider a package that is configured up to three adoptive nodes.
Figure 1-4 shows this configuration. If Node_A fails, Pkg_1 is adopted by
Node_B. However, if Node_B is down, Pkg_1 is adopted by Node_C, and if
Node_C is down, Pkg_1 is adopted by Node_D. The adoptive nodes are
listed in the package configuration file, which was generated by using
cmmakepkg -p file command (see Managing Serviceguard for Linux,
Chapter 6) in the order in which they will be tried. Note that all four
nodes must have access to the disks for the Pkg_1 file systems.
Figure 1-4 Cascading Failover, with Three Adoptive Nodes