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

• Fixes a condition that causes the panic “u_seg_vop_remove: seg not found” in
vop.
• Fixes a problem in which a duplicate IP address might be configured on the system
or an IP address might be configured with an incorrect netmask.
• Extension of UFS file systems via the mount command can effectively disable use
of the file system. Additionally, on some LSM based systems a panic can occur
after a file system extension has been completed.
• Fixed a problem in which a process waiting on a semaphore does not get woken
up.
• Fixes a problem that causes the panic "Bigpage Assertion Failed."
• Allows the size of the NFS server's duplicate request cache to be adjusted as needed.
• Corrects a locking problem with NFS running over UFS.
• Fixes a problem in which a Tru64 UNIX NFS client panics when it receives a null
entry as a response to a readdirplus request from an NFS server.
• Fixes a problem in which a Tru64 UNIX NFS server panics as a result of receiving
illegal file access mode from an NFS client.
• Corrects a rounding error for the vm attribute vm_bigpg_thresh.
• Corrects the handling of bad pages when big pages are enabled.
• Fixes the cause of "page mapped" panics when using mmap calls with dev/mem
to access free big pages.
• Increases the TCP window increased from 96 KB to 500 KB to improve performance.
• Causes the netisr thread to dynamically estimate the reply size the socket buffer
and subsequently reserve the space in it.
• Adds a new timeout check to notice when data has not been acknowledged in
30-50 seconds and copy those buffers, thereby allowing the UBC to free up those
mbufs and not tie them up.
• Adds support for CPU indictment on the AlphaServer GS1280 platform.
• Fixes a problem in which gh_min_seg_size can not be set below 8M.
• Fixes a problem with cluster failovers of UFS filesets.
• Fixes a panic resulting from race condition in the MFS (memory file system) over
CFS (cluster file system).
• Corrects a problem in which an ARP request for a permanent ARP entry is ignored
and a connection cannot be maked from the remote system.
• Fixes a high lock contention for str_to_lock, a STREAMS attribute.
• Adds a configurable tuning parameter to the STREAMS subsystem for
ES47/ES80/GS1280 platforms.
• Fixes a flaw in the NFS server that can cause it to crash upon reception of
malformed input.
• Fixes a kernel memory fault in u_seg_global_destroy.
124 Tru64 UNIX Patches