HP Serviceguard Toolkit for NFS manual NFS Control Scripts for pkg01

Sample Configurations

Example Two - One Adoptive Node for Two Packages with File Lock Migration

NFS Control Scripts for pkg01

The nfs.cntl Control Script

This section shows the NFS control script (nfs1.cntl) for the pkg01 package in this sample configuration. Only the user-configured part of the script is shown; the executable part of the script and most of the comments are omitted.

PATH=/sbin:/usr/bin:/usr/sbin:/etc:/bin
VGCHANGE=”vgchange -a e”	# Default

CVM_ACTIVATION_CMD="vxdg -g \$DiskGroup set activation= exclusivewrite"

VG[0]=nfsu01

LV[0]=/dev/nfsu01/lvol1; FS[0]=/hanfs/nfsu011; FS_MOUNT _OPT[0]="-o rw"

VXVOL="vxvol -g \$DiskGroup startall" #Default

FS_UMOUNT_COUNT=1

FS_MOUNT_RETRY_COUNT=0

IP[0]=15.13.114.243

SUBNET[0]=15.13.112.0

function customer_defined_run_cmds

{

cmmodpkg -d -n ‘hostname‘ pkg02 &

}

The function customer_defined_run_cmds calls the cmmodpkg command with the package control option (-d). This command prevents the host that is running pkg01 from adopting pkg02. The ampersand (&) causes the cmmodpkg command to run in the background. It must run in the background to allow the control script to complete.

There is a short time, after one primary node has failed but before the cmmodpkg command has executed, when the other primary node can fail and the adoptive node will adopt its package. In other words, if both thyme and basil fail at approximately the same time, host sage may adopt two packages, even though the package control option is specified.

68 Chapter 3