Serviceguard NFS Toolkit A.11.11.06, A.11.23.05 and A.11.31.05 Administrator's Guide HP-UX 11i v1, v2, and v3

Figure 3-1 Server-to-Server Cross-Mounting
The advantage of server-to-server cross-mounting is that every server has an identical view of
the file systems. The disadvantage is that, on the node where a file system is locally mounted,
the file system is accessed through an NFS mount, which has poorer performance than a local
mount.
In order to make a Serviceguard file system available to all servers, all servers must NFS-mount
the file system. By doing so, access to the file system is not interrupted when the package fails
over to an adoptive node. An adoptive node cannot access the file system through the local
mount, because it would have to unmount the NFS-mounted file system before it can mount it
locally. Also, unmount the NFS-mounted file system, it must kill all processes using the file
system.
To set up an NFS package with file systems that are NFS-mounted by Serviceguard NFS servers,
complete the following steps:
1. Create a package specific directory at /etc/cmcluster/nfs/pkg1.
2. Make a copy of the /opt/cmcluster/nfs/nfs_xmnt script.
cd /etc/cmcluster/nfs/pkg1
cp /opt/cmcluster/nfs/nfs_xmnt nfs1_xmnt
3. In the copy of the nfs_xmnt script, create an SNFS[n] and CNFS[n] variable for each file
system in the package that will be NFS-mounted by servers. The SNFS[n] variable is the
Configuring a Serviceguard NFS Modular Package 57