Serviceguard NFS Toolkit A.11.11.04 and A.11.23.03 Administrator's Guide

Sample Conﬁgurations

Example Four - Two Servers with NFS Cross-Mounts

Chapter 3 87

The ﬁrst line in the customer_defined_run_cmds function executes the

nfs1_xmnt script locally on host thyme (the primary node for pkg01). The

second line, beginning with remsh, executes the nfs1_xmnt script

remotely on host basil.

If pkg01 fails to come up, or if the remsh to host basil fails, the ﬁle

system will not be mounted, and no error will be returned. The only way

to be sure the ﬁle system was mounted successfully is to run the

nfs1_xmnt script manually on both host thyme and host basil.

The only user-conﬁgurable values in the nfs1_xmnt script are the

SNFS[

] and CNFS[

] variables. These specify the server location of the

ﬁle system and the client mount point for the ﬁle system. The following

line is the from the nfs1_xmnt script in this example conﬁguration:

SNFS[0]=”nfs1:/hanfs/nfsu011”; CNFS[0]=”/nfs/nfsu011”

In the SNFS[0] variable, “nfs1” is the name that maps to the relocatable

IP address of pkg01. It must be conﬁgured in the name service the host is

using (DNS, NIS, or the /etc/hosts ﬁle). If you do not want to conﬁgure

a name for the package, you can just specify the IP address in the

SNFS[0] variable, as follows:

SNFS[0]=”15.13.114.243:/hanfs/nfsu011”;

CNFS[0]=”/nfs/nfsu011”

The client mount point, speciﬁed in the CNFS[0] variable, must be

different from the location of the ﬁle system on the server (SNFS[0]).

The hanfs.sh Control Script

This section shows the NFS control script (hanfs1.sh) for the pkg01

package in this sample conﬁguration. This example includes only the

user-conﬁgured part of the script; the executable part of the script and

most of the comments are omitted. This example does not enable the File

Lock Migration feature.

XFS[0]=/hanfs/nfsu011

NFS_SERVICE_NAME[0]="nfs1.monitor

NFS_SERVICE_CMD[0]="/etc/cmcluster/nfs/nfs.mon"

NFS_FILE_LOCK_MIGRATION=0

NFS_FLM_SCRIPT="${0%/*}/nfs.flm"

B5140-90021.book Page 87 Wednesday, November 17, 2004 10:52 AM