HP Tru64 UNIX and TruCluster Server Version 5.1B-5 Patch Summary and Release Notes (March 2009)

• Corrects a condition that results in a failure to release file region locks (NFS client
only).
• Corrects a panic “vm_pg_free: page on o/h list.”
• Fixes a process deadlock that occurs when rename is called with “.” as the target.
• Resolves a potential system hang in the kernel virtual memory subsystem when
running the ClearCase V5.0 Multiversion File System (MVFS).
• Fixes a problem that prevents 6to4 and autotunnels from being disabled properly
when the corresponding IPv4 address is deleted.
• Fix to send maximum sized packets on FDDI networks when pmtu_enabled=0.
• Makes Tru64 UNIX V5.1B compatible with V5.1A in regard to the handling of the
relationship between a controlling terminal and the “session” structure.
• Fixes the fastpath send of RPC modules to correct conditions in which it ignores
the VMAC setting and it excludes source and destination UDP port numbers when
LAG is enabled.
• Fixes a problem in which the NFS server, in certain cases, does not update the
access time on the files it serves.
• Enables IPv6 MTU to be set up to 9000 bytes on gigabit Ethernet.
• Fixes memory troller panic that can occur when booting in low-memory conditions.
• Addresses two potential causes of various ics timeout panics, such as
“ics_unable_to_make_progress: input tread” and “ics_unable_to_make_progress:
netisrs stalled.”
• Enables allows AutoFS mount-on paths to have the correct maximum length when
AutoFS files are mapped directly.
• Fixes a race condition in VM map-entry fault handling that can result in poor
performance and/or panics.
• Fixes a SierraCluster "bigpage assert failure" panic.
• Corrects the panic:"kernel memory fault" in umc_page_release() due to
non-initialization of variable hpp.
• Fixes a problem that can cause the system panic "cmn_err: ce_panic:
ics_unable_to_make_progress: netisrs stalled."
• Fixes a problem that causes multiple TCP sockets to be created and then left in the
CLOSE_WAIT state on an NFS client in a TruCluster when the NFS server is
unavailable.
• Provides improvements to the TCP Selective Acknowledgment (SACK) option.
• Corrects an issue in which tape devices with no ddr entry would not have
compression correctly enabled or disabled as appropriate to the device special file
that was used.
• Corrects a problem that causes data transfers to be slow on socket connections
when using the MSG_WAITALL flag in a recv() socket call.
3.4 Summary of Base Operating System Patches 135