HP Tru64 UNIX and TruCluster Server Version 5.1.B-4 Patch Summary and Release Notes (13156)

1.32 fsdb Utility Now Operates on File System Image
The fsdb utility is now capable of operating on a file system image as well as a special file. The
name argument will first be processed as a special file; should that fail, it will be processed as a
regular file. To avoid conflict, an optional f argument will force the name argument to be
processed only as a regular file. See the revised fsdb(8) reference page delivered in this kit.
1.33 sendmail Log Problem Corrected
This kit corrects a problem with sendmail registration as a PSM (Process Set Manager) process.
EVM would incorrectly log the following statements when sendmail was stopped or started
or restarted:
PSM instance pid exited in category _unknown_ on node nodename PSM
instance pid created in category _unknown_ on node nodename
Where pid is the process ID of the sendmail daemon and nodename is the host where sendmail
runs.
The sendmail program now correctly registers itself with the PSM and the same is reflected in
log records.
1.34 New Tunable Attribute Corrects NetRAIN Failover Problem
A new tunable attribute fixes a NetRAIN failover problem that occurs in a “quiet” network. In
a two interface NetRAIN set, if the current active interface goes down, the secondary (backup)
interface fails to become the new primary (active) interface. To correct this problem, set the new
nr_use_link_state attribute as follows:
# sysconfig -r netrain nr_use_link_state=1
For information about this attribute, see the revised sys_attrs_netrain(5) reference page delivered
in this kit.
1.35 New Attribute Controls Tape Driver Path Control
A new cam tape subsystem attribute, enable_preferred_path, lets you control preferred
path behavior for a tape driver. Enabling this attribute (1) causes the tape driver to assign different
paths to different tape drives. The default (0) disables preferred path behavior. The revised
sys_attrs_cam(5) reference page delivered in this kit describes the enable_preferred_path
attribute.
A problem may exist when using preferred path behavior when you use a no-rewind tape device.
If the application is not expecting the tape to change position between a previous tape close and
a subsequent tape open, the data already on the tape may be lost with the next write command,
possibly resulting in unusable backups. This problem only occurs when a system has multiple
initiators.
The following steps will prevent this problem from occurring:
• Before performing a backup, reserve the device and lock down the path as follows:
# mt -f /dev/ntape/tape0 reserve
• After performing the backup, release the device and unlock the path as follows:
# mt -f /dev/ntape/tape0 release
1.32 fsdb Utility Now Operates on File System Image 29