ONCplus B.11.31.15 Release Notes (5992-5685, September 2012)

New NFS Features in ONCplus B.11.31.03
NFS introduces the following features for NFSv4:
• File Delegation with Local Access
NFSv4 clients support delegation on HP-UX 11i v3. However, until ONCplus B.11.31.03,
NFSv4 servers supported delegation with the caveat that no local file access will occur on
any delegated file. For example, if the server grants a delegation to the file “/a/b/foo” then
any local users on the server need to avoid accessing file “foo” while the delegation is in
effect. If both local and remote users modify the delegated file, then the data in “foo” could
become corrupted.
As of ONCplus B.11.31.03, when using the File Delegation, both local and remote file users
can modify the delegated file.
• Cross Mount Traversal
The NFSv4 protocol allows clients to seamlessly traverse the servers shared directories and
cross the physical file system boundaries on the server without having to explicitly mount each
shared file system independently. For example, if the server is sharing the two file systems “/”
and “/a/b” respectively, the client, after mounting the root file system of the server, can
traverse the file system “/a/b” on the server without mounting the file system explicitly.
• Referrals and Multi-server Namespace
The Cross Mount Traversal feature allows an NFSv4 client to traverse the servers shared
directories and seamlessly cross the physical file system boundaries on the server. The Referrals
feature allows an NFSv4 client to traverse shared directories and seamlessly cross the physical
file systems located on different servers. In other words, a referral defines a way for the NFSv4
server to direct an NFSv4 client to a file system which resides on a different server. The
combination of cross mounts and referrals can be used to construct a global namespace.
For additional details on these new NFS features, see the Introducing Network File systems
Version 4 on HP-UX 11i v3 white paper. To locate this document, go to the HP-UX Networking
docs page at: http://www.hp.com/go/hpux-networking-docs. On this page, select HP-UX
11i v3 Networking Software.
Features Introduced in ONCplus B.11.31.02
ONCplus B.11.31.02 includes both defect fixes and new features. All fixes and features introduced
in previous ONCplus versions are supported in ONCplus B.11.31.02. The following features were
introduced in ONCplus B.11.31.02:
New CacheFS Features in ONCplus B.11.31.02
CacheFS introduces the following features:
• Support for ACLs
An access control list (ACL) offers stronger file security by enabling the owner of the file to
define file permissions for specific users and groups. HP-UX supports two types of ACLs:
HPUX_ACLS and SYSV_ACLS. HPUX_ACLS are non-POSIX compliant. SYSV_ACLS are POSIX
compliant. This version of CacheFS supports caching for only SYSV_ACLS. Thus, this version
of CacheFS on HP-UX supports ACLs with VxFS and NFS and not with HFS.
• Support for Logging
A new command, cachefslog enables or disables logging for a CacheFS mount-point. If
logging functionality is enabled, details about the operations performed on the CacheFS
mount-point are stored in a logfile. This logfile contains information on all the CacheFS mount
points using the same cache directory. Use the cachefswssize command to display the
amount of space taken by each of the filesystems in the same cache and the total size occupied
Features Introduced in ONCplus B.11.31.02 27