1-1 Operating System Enhancements

The Tru64 UNIX Version 5.1B-4 release combines several resiliency enhancements and the latest patch kit onto the Version 5.1B-4 CD. The Version 5.1B-4 kit has undergone full product qualification testing as a single entity on multiple configurations and is binary compatible with all previous Version 5 stream releases.

The following sections provide information on some of the new functionality and enhancements included in Tru64 UNIX Version 5.1B-4. For more information and a complete list of the changes included in this release, see the Patch Summary and Release Notes document, which is included on the Version 5.1B-4 CD and is available on the Tru64 UNIX documentation Web site.

1-1-1 Standards Conformance

HP Tru64 UNIX continues to comply with open standards and recently updated its certification with The Open Group. The product is now certified as HP Tru64 UNIX. Therefore, the product name in the software has been changed to HP Tru64 UNIX. (See “Tru64 UNIX Rebranding Results in File Changes”.) A new system attribute has also been added so that the waitpid and poll system calls conform to UNIX98 standard behavior.

Several commands (such as awk, cp, rm, uucp, and uudecode) have been updated to conform to the POSIX standard.

A new CAM attribute provides support for asymmetric logical unit access (ALUA), which is part of the SCSI Primary Commands – 3 (SPC-3) standard from the T10 Committee. When enabled, this attribute enables the use of optimal paths for I/O access and can improve performance when used with asymmetric active-active storage controllers, such as the HP StorageWorks 4000/6000/8000 Enterprise Virtual Arrays.

1-1-2 Support Provided for 2007 Changes to U.S. Daylight Savings Time

This kit updates/etc/zoneinfo time zone data files to incorporate all changes as of Nov. 1, 2006, in time zones around the world, most notably the US Daylight Savings Time (DST) rule changes that were passed into law on August 8, 2005 and take effect in 2007.

That law moves the start of DST from the first Sunday of April to the second Sunday of March. It moves the return to Standard Time from the last Sunday of October to the first Sunday of November. These changes affect all US time zones time zones in other North American countries as well.

1-1-3 BIND Updated to Version 9.2.5

This kit updates BIND to Version 9.2.5, a new version from the Internet Software Consortium that represents a major rewrite of nearly all aspects of the underlying BIND architecture. Important features of BIND 9 include DNS Security, IP Version 6, and DNS Protocol Enhancements. Included with this update are several new BIND-related reference pages. For more information on BIND and BIND actions to take when installing this kit, see the online Patch Summary and Release Notes document.

1-1-4 sendmail Server Updated to Version 8.13.6

The sendmail server has been updated to Version 8.13.6. This version of the sendmail server provides advanced features, such as masquerading, virtual domain hosting, restricted relaying, and milter functionality. This update also brings key changes to the sendmail configuration file.

1-1-5 NetRAIN over LAG

With this release, it is now possible to run NetRAIN over link aggregation (LAG). Although only one LAG group will be active at a time, the benefit is that it enables the use of NetRAIN with redundant switches and a high bandwidth LAG group.

1-1-6 Storage Enhancements

HP continues to qualify HP StorageWorks products with Tru64 UNIX to ensure continued support and availability of storage products on Tru64 UNIX.

This release includes a wrapper library and HBA-specific library for the Emulex adapter. These libraries provide a host bus adapter (HBA) programming interface for Fibre Channel management applications to gather information about devices in the network in a vendor-neutral way through a set of application programming interfaces (APIs). These APIs are used by the HP Storage Essentials.

Three new I/O subsystem attributes have been added to control path registration during the boot process, which can increase boot speeds for systems with multiple paths to a large number of devices.

This release also includes enhancements to the storage subsystem, such as the following:

A new EMX attribute that allows you to turn on link level error recovery (LLER) for tape I/O.
A new cam tape subsystem attribute that enables you to control preferred path behavior for a tape driver.

1-1-7 AdvFS Enhancements

This release improves the Advanced File System (AdvFS) in the following ways:

Modifications to the AdvFS rmvol utility now enable it to accept more than one volume for removal on the command line.
Enhancements to the AdvFS vods utilities have make them more useful when working with AdvFS metadata files. New options have been added and some existing options have been improved. The changes are documented in revised reference pages.
A new rc.config variable, ADVFSD, lets you control the boot time invocation of the advfsd daemon.

1-1-8 LSM Enhancements

The volwatch command has been enhanced to improve LSM hot-sparing, which pro-actively replaces plexes that are based on failing storage devices and recovers their data. Now when hot-sparing performs a recovery, it avoids using a plex that it is relocating, unless it has no other choice.

1-1-9 Additional Enhancements

The follow list provides a summary of additional enhancements to the operating system:

A new ftpd daemon option improves login performance.
Enhancements to the kdbx debugger improve serviceability.
A new disklabel command option expands partitions.
Modifications to the envmond daemon let it use EVM events.
Modifications to the mountd daemon allow binding to a specific port number.
A new hwmgr option provides additional information on the EMX adapter.
New kernel attributes protect against potential ICMP security vulnerabilities.
The addition of several new tunable attributes to the NFS and RPC subsystems enable you to modify these kernel subsystem configurations using the sysconfig command.
Modifications to the fsdb utility enable it to operate on a file system image as well as on a special file.