HP-UX 11i December 2004 Release Notes

HP-UX 11i Version 1 Operating Environment Applications
HP-UX 11i v1 Mission Critical Operating Environment (MCOE)
Chapter 6
148
HP Serviceguard NFS Toolkit
HP Serviceguard Network File Server (NFS) Toolkit (formerly MC/ServiceGuard NFS
Toolkit) uses HP Serviceguard (formerly MC/ServiceGuard) to set up highly available
NFS servers. An NFS server is a host that “exports” its local directories (makes them
available for client hosts to mount using NFS). On the NFS client, these mounted
directories look to users like part of the client’s local file system. With HP Serviceguard
NFS, the NFS server package containing the exported file systems can move to a
different node in the cluster in the event of failure.
updated for
December 2004
• HP Serviceguard NFS Toolkit version A.11.11.04 improves the failover performance
for rpcbind failures.
Previously if attempts to ping rpcbind failed, it would take approximately 12
minutes for a failover to occur. There were 10 attempts made to ping rpcbind. With
the new
PORTMAP_RETRY variable in nfs.mon, the number of attempts can be set to
any value greater than 0, with a default of 4. The failover time with the default value
of 4 is approximately 5 minutes.
Also, before pinging rpcbind, a check is made to ensure that the rpcbind process
exists. If this check fails, the failover should begin within the
INTERVAL value set in
the nfs.mon script. The default
INTERVAL value is 10 seconds.
• Version A.11.11.04 also specifies that the length of the NFS_FLM_SCRIPT variable is
limited to 13 characters in the nfs.mon script.
• The product name has been changed from MC/ServiceGuard NFS Toolkit to HP
Serviceguard NFS Toolkit.
updated for
September 2003
MC/ServiceGuard NFS Toolkit version A.11.11.03 delivers an enhancement to support
File Lock Migration. MC/ServiceGuard NFS Toolkit was never designed to keep track of
which remote NFS clients were holding file locks with the filesystems associated with
highly available packages and transition these locks between servers during a failover
event. When enabled, the File Lock Migration enhancement removes this limitation.
Software Requirements
• Version A.11.11.01, A.11.11.02, and A.11.11.03 are supported only on HP-UX 11i v1.
• As of September 2003, MC/SG version A.11.15 must be installed, as
MC/ServiceGuard NFS Toolkit version A.11.11.03 has a dependency on MC/SG
A.11.15.
• To enable the File Lock Migration enhancement, the NFS General Release and
Performance Patch PHNE_26388 (or a superseding patch) must be installed.
NOTE For documentation about MC/ServiceGuard NFS Toolkit in previous releases of HP-UX
11i v1, see HP-UX 11i December 2001 Release Notes, available at
http://docs.hp.com/hpux/os/11i/index.html.
Documentation
For more information, see the following documents, available at
http://docs.hp.com/hpux/ha/index.html#Highly%20Available%20NFS:
• Serviceguard NFS Toolkit A.11.11.04 and A.11.23.03 Administrator's Guide