Using NFS as a file system type with HP Serviceguard A.11.20 on HP-UX and Linux

In the example in figure 3, there are multiple routes or paths between the NFS server and the NFS client, and the packet

can travel by any path. Configure CONFIGURED_IO_TIMEOUT_EXTENSION to sum of the MBTD values in the longest route.

Figure 3. The NFS client and the NFS server use more than one route to communicate

When the NFS client writes packets from the NFS client to the NFS server, the data might travel through switch 1 and 2,

or instead go through switch 3 and reach the NFS server. For Path 1 (via switch 1 and switch 2) the sum of the MBTD

values is two seconds. For Path 2 (via switch 3) the MBTD value is one second. In this case, set

CONFIGURED_IO_TIMEOUT_EXTENSION to 2000000.

Note: While configuring the parameter CONFIGURED_IO_TIMEOUT_EXTENSION, users have to ensure that the parameter

HALT_SCRIPT_TIMEOUT is greater than CONFIGURED_IO_TIMEOUT_EXTENSION.