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

use_fastsend
Enables or disables the optimization of client and server code used by NFS
over UDP.
—
— use_fastroute
Enables or disables improved fastsend optimization that affect the NFS server.
3.2.1.29 New cam Attribute Controls Path Usage
A new attribute, cam_ccfg_aa_enable, has been added to the cam subsystem to
control preferred path usage.
When enabled, this attribute utilizes the target port group information from the storage
controller to determine the optimal paths and use these optimal paths for I/O access.
When disabled, all paths to that device are used.
Active-active asymmetric storage controllers may incur a performance penalty when
accessed on non-optimal paths.
For more information, including setting this attribute, see the revised sys_attrs_cam(5)
reference page delivered in this kit.
3.2.1.30 LSM hot-sparing Improved
The Logical Storage Manager (LSM) command volwatch 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 is performing a recovery, it will avoid using a plex that it is
relocating — unless it has no other choice.
3.2.1.31 New Option Changes Configuration File Used by aliasd Daemon
A new option, custom_gated, has been added to the cluamgr command to change
the configuration file used by the aliasd daemon.
You can cause aliasd to use the file /etc/gated.conf instead of /etc/
gated.conf.memberX as the gated configuration file and restart gated in either
of the following ways:
• Specify the cluamgr command as follows:
# cluamgr -r gated,custom_gated,start
• Modify the /etc/rc.config.common file by specifying the following command:
# rcmgr -c set CLUAMGR_ROUTE_ARGS "gated,custom_gated"
After running the rcmgr -c command, restart network services by running the
rcinet command on all cluster nodes:
# rcinet restart
56 Tru64 UNIX Patches