ONCplus B.11.31.06 Release Notes

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 should 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, please see the Introducing Network File
systems Version 4 on HP-UX 11i v3 white paper at: http://docs.hp.com/en/
netcom.html#NFS%20Services
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
14 ONCplus Release Notes