HP Tru64 UNIX and TruCluster Server Version 5.1B-6 Patch Summary and Release Notes

• Enables suitable monitoring of individual NetRAIN interfaces
• Provides a tunable attribute that gives system administrators the ability to adjust the weight
that the kernel places on the NUMA locality for forks on AlphaServer GS80, GS160, GS320,
and GS1280 systems.
• Sets a software limit to prevent serious performance problems that can occur when TCP
connections that have an rate-limit enforced by a downstream network device overrun the
device.
• Adds per-binary big page controls to complement the system-wide tunable attributes.
• Enhances HP-XP array controller support and possible future new tape device support.
• Fixes a panic condition in AIO.
• Fixes a "simple lock: time limit exceeded" panic.
• Fixes a problem that prevents access to the AutoFS file systems if ACLs are enabled.
• Improves NFS client performance on NUMA systems by doing a better job distributing data,
locks, and nfsiod threads across Resource Affinity Domains (RADs).
• Addresses the dispatching of NFS server requests for the public file handle on cluster
members and multi-RAD systems.
• Fixes how the NFS client handles full NFS version 3 64-bit file IDs.
• Resolves a problem that prevents the viewing of files created by third-party software on
some CD-ROM media.
• Resolves a problem of not being able to view files on some CD-ROM media that is created
by third-party software and corrects the erroneous reporting of success when attempting
to write beyond the file size limit using synchronized I/O and the calculation of
_PC_FILESIZEBITS, which is used by the operating system for pathconf file characteristics.
• Fixes a race condition in the kernel AIO code that can panic the system with either a kernel
memory fault or a duplicate malloc free.
• Corrects a potential panic with large memory processes using System V shared Memory at
process exit.
• Corrects a panic resulting from a race condition between vnode deallocation logic and the
use of CACHE_LOOKUP_REF/CACHE_LOOKUP_RELE in grab_bsacc and bs_dealloc_access
(which attempt to block vnode deallocation).
• Fixes a memory leak in the NFS server encountered when it receives malformed packets.
• Fixes an AutoFS panic during an unmount operation when AutoFS tries to remove a directory.
• Corrects a problem in which Tru64 UNIX sees an HP-XP RAID array controller as a disk
after an HP-XP storage device is added to the system.
• Corrects a problem in which table() calls were not correctly getting process arguments.
• Improves the scaling of IP reassembly code on large SMP machines. NFS servers are especially
susceptible when a large number of clients attempt to write at the same time.
• Implements buffer cache page checksum caching for NFS client pages.
• Fixes a problem that can cause a system crash when an NFS server exports files on a
third-party file system (that is, one not built into Tru64 UNIX).
• Fixes a rare kernel panic that occurs during the handling of a clock tick when class scheduling
is used.
• Corrects a potential process hang that occurs while exiting a system that has dynamically
powered off a processor.
• Corrects a system panic when running with big pages enabled.
• Addresses problems that occur when taking noninteractive core dumps using the coredump
command.
• Corrects potential hangs of applications using the pshared subsystem that can occur as a
result of a thread failing to wake up after its condition variable timer had expired.
98 Tru64 UNIX Patches