Overview of Serviceguard NFS
Supported Configurations
A Host Configured as Adoptive Node for Multiple
Packages
Figure
Figure | A Host Configured as Adoptive Node for Multiple Packages | |||||||||
Before Failover: |
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After Failover:
Node_A |
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Pkg_1 |
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disks |
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When Node_A fails, Node_B becomes the server for Pkg_1. If Node_C fails, Node_B will become the server for Pkg_2. Alternatively, you can set the package control option in the control script, nfs.cntl, to prevent Node_B from adopting more than one package at a time. With the package control option, Node_B may adopt the package of the first node that fails, but if the second node fails, Node_B will not adopt its package. The package control option prevents a node from becoming overloaded by adopting too many packages. If an adoptive node becomes overloaded, it can fail.
Chapter 1 | 15 |