Serviceguard NFS Toolkit A.11.11.08 and A.11.23.07 Release Notes

Serviceguard NFS Toolkit
This document provides information about the A.11.11.08 and A.11.23.07 versions of the
Serviceguard NFS Toolkit.
Overview
HP Serviceguard Network File Server (NFS) Toolkit uses HP Serviceguard to set up highly
available NFS servers. An NFS server is a host that exports its local directories and makes them
available for client hosts to mount using NFS. On the NFS client, users can access these mounted
directories in the same manner that they access the local file system. With the HP Serviceguard
NFS Toolkit, the NFS server package containing the exported file systems can move to a different
node in the Serviceguard cluster if a failure occurs.
Serviceguard NFS Toolkit A.11.11.08 is supported on HP-UX 11i v1 only.
Serviceguard NFS Toolkit A.11.23.07 is supported on HP-UX 11i v2 only.
New and Changed Features in Release A.11.23.07
Cluster File System Support
Release A.11.23.07 of the Serviceguard NFS Toolkit supports the Cluster File System (CFS). In a
CFS environment, all nodes in the Serviceguard cluster can concurrently access the files in the
CFS. The NFS servers in the cluster can concurrently access and export directories in the CFS.
As a result, CFS enables NFS clients (typically located outside the cluster) to concurrently use
multiple NFS servers to access files. If an NFS server system or a package fails, the adoptive
nodes do not have to mount disks from the failed system, since the disks are already mounted
on the adoptive node. This feature provides improved performance, scalability, and availability.
For more information, see the Serviceguard NFS Toolkit Support for CFS white paper located
at: http://www.docs.hp.com.
Limitations
Using the Serviceguard NFS Toolkit with CFS has the following limitations:
• No lock coherency for multiple NFS servers.
NFS file lock coherency is not supported when multiple NFS servers are concurrently
accessing a file. Lock operations will not return an error, but lock coherency is not guaranteed.
This may cause data corruption or cause applications to hang.
• Cross mounting (using the nfs_xmnt script) is not supported, since CFS provides file sharing
functionality within the cluster.
• Secure NFS is not supported when using Serviceguard with CFS.
• The maximum number of NFS server nodes is four.
Known Problems Fixed in This Version
The following table lists the known problems and fixes in the A.11.11.08 and A.11.23.07 releases
of Serviceguard NFS Toolkit.
Table 1 Fixes in the Serviceguard NFS Toolkit A.11.11.08 and A.11.23.07
DescriptionDefect ID
If a hostname in the options of the exportfs command cannot be resolved, the exportfs
command displays the following error message: exportfs:<hostname>:unknown host.
The hanfs.sh script exits the nfs_export_fs function with an error status. This error
results in the failure of package startup.
SR: 8606474665
CR: JAGag29174
Overview 7