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

• Fixes multiple disable or enable problems with cluamgr.
• Fixes a tok_wait hang problem on Sierra Clusters.
• Adds the ability to change the default interconnect interface name.
• Corrects several problems in the cluster install and upgrade utilities.
• Fixes a problem in which an RDG (Reliable DataGram) kernel thread can starve
other timeshare threads on a uniprocessor cluster member. In particular, system
services such as networking threads can be affected.
• Fixes minor issues with cfsstat command-line options and return values.
• Prevents panics seen with cluster server-only (for example, MFS) mounts.
• Fixes a condition that causes the panic pg_nwriters going negative when
ubc_page_release() is called from cfs_getpage().
• Corrects a problem in the RDG component in which multiple Oracle instances are
unable to be properly configured when using RDG over a LAN rather than Memory
Channel.
• Provides a sticky connection feature for a cluster alias.
• Updates sysconfig to use the cluster interconnect, allowing for a greater SSI
collaboration. This will help with changing variables on hung systems, single user
systems, and normal running systems.
• Improves device error processing in drd.
• Corrects a boot hang problem seen on large-scale Sierra Cluster configurations
caused by a missed wake up in the kernel group services code.
• Alters the behavior of the cluster NFS client with TCP mounts so that when a
remote server is down, the cluster NFS client will use nonreserved ports to see if
the remote server is up.
• Introduces a new CFS tunable attribute that may benefit the performance of client
reads of clone files under certain circumstances.
• Addresses an assertion caused by a bad user pointer passed to the kernel via
sys_call.
• Corrects a condition that results in excessive context switching and CPU load due
to a heavy use of the cluster alias on large SMP and NUMA machines .
• Enhances /sbin/advfs/tag2name to print out the name of the associated directory,
given the tag of an index file.
• Increases performance scalability and extends the reliability of the Internode
Communications Subsystem in a cluster configured with Memory Channel as the
cluster interconnect.
• Improves detection of possible race conditions during CFS recovery.
• Adds a cluster panic facility to the kernel.
• Addresses the following:
4.3 Summary of TruCluster Server Software Patches 223