ONCplus B.11.31.09.01 Release Notes HP-UX 11i v3 (September 2010)

• Secure NFS
With Secure NFS security can be implemented at the Remote Procedure Call (RPC) level.
This standard authentication system is known as Secure RPC. When NFS uses the facilities
provided by Secure RPC, it is known as Secure NFS.
RPC authentication enables you to use a variety of authentication systems, such as DH,
UNIX, and KERB, and is not dependent on the version of NFS used.
• Client Failover
When an NFS server fails, the client accessing the shared files on that server can no longer
access the shared files. If client failover is enabled, the client is automatically switched to an
alternate server, which is a replica of the server that failed. The client continues to access
shared files, without being aware of the switch.
NOTE: Client failover support is limited to read-only mounts or static filesystems that are
not modified often.
• Enhanced NFS logging
NFS server logging enables an NFS server to provide a record of file operations that are
performed on its filesystems.
New AutoFS Features in ONCplus B.11.31_LR
AutoFS supports the following features:
• On-Demand Mounting of Hierarchical Filesystems
In earlier versions, AutoFS mounted an entire set of filesystems if they were hierarchically
related. However, in HP-UX 11i v3, AutoFS mounts only those filesystems that users access.
Other filesystems that are hierarchically related to these filesystems are mounted only when
they are requested. Hierarchical filesystem mounting prevents unnecessary mounting and
unmounting, and improves performance.
• Browsability
AutoFS enables a user to browse the potential mount-points for indirect maps without
actually mounting each filesystem.
• Concurrent mount or unmount
AutoFS performs concurrent mounts and unmounts using the multithreaded automountd
daemon. Concurrent mounting or unmounting prevents services from hanging if a server
is unavailable.
• Reliable NFS ping
AutoFS supports a -retry=n mount option for an NFS map entry to configure the ping
timeout value. The default timeout value is 10 seconds. The ping command can impose a
load on the network if used during normal operations or from automated scripts.
• NFS loopback mount
By default, AutoFS uses the Local File Systems (LOFS) mounts for locally mounted
filesystems. AutoFS provides an option to allow loopback NFS mounts for the local mount.
Use this option in high availability NFS environments.
• Client-side Failover Support
If the current server goes down, AutoFS enables a mounted NFS read-only filesystem to
transparently switch over to an alternate server.
• Backend Support
AutoFS supports the storage and distribution of AutoFS maps in the following:
Features Introduced in ONCplus B.11.31_LR 27