HP-UX 11i Version 2 May 2005 Release Notes
General System Administration
HP Serviceguard NFS Toolkit
Chapter 5
116
Obsolescence
Not applicable.
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.
Summary of Change
HP Serviceguard NFS Toolkit version A.11.23.03 improves the failover performance for
rpcbind failures. The product name has been changed from “MC/ServiceGuard NFS
Toolkit” to “HP Serviceguard NFS Toolkit.” Other defects were fixed in this release and
are documented in the Serviceguard NFS Toolkit A.11.11.04 and A.11.23.03 Release
Notes, available at http://docs.hp.com/en/ha.html#Highly%20Available%20NFS.
Impact
If NFS services are monitored and rpcbind fails, it will now take less time for a failover
to occur. A new variable,
PORTMAP_RETRY
, has been added to the nfs.mon script to
configure the number of times to attempt to ping rpcbind before a failover occurs (the
default is 4).
Compatibility
There are no known compatibility issues.
Performance
Previously if rpcbind were killed, 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.
Documentation
For further information, refer to the following documents at
http://docs.hp.com/en/ha.html#Highly%20Available%20NFS:
• Serviceguard NFS Toolkit A.11.11.04 and A.11.23.03 Administrator’s Guide
• Serviceguard NFS Toolkit A.11.11.04 and A.11.23.03 Release Notes