Updated: 24-SEP-2003 (Use your browsers' Reload button to ensure you're viewing the most recent version)
VMS712_CLIUTL-V0100 Alpha V7.1-2 CLIUTL ECO Summary
Copyright (c) Compaq Computer Corporation 2000. All rights reserved.
Modification Date: 17-JAN-2001
Modification Type: New Kit
OP/SYS: OpenVMS Alpha
COMPONENT: CLIUTL
SOURCE: Compaq Computer Corporation
ECO INFORMATION:
ECO Kit Name: VMS712_CLIUTL-V0100
DEC-AXPVMS-VMS712_CLIUTL-V0100--4.PCSI
ECO Kits Superseded by This ECO Kit: None
ECO Kit Approximate Size: 2048
Kit Applies To: OpenVMS Alpha V7.1-2
System/Cluster Reboot Necessary: No
Rolling Re-boot Supported: Information Not Available
Installation Rating: 3
Kit Dependencies:
The following remedial kit(s) must be installed BEFORE
installation of this kit:
VMS712_UPDATE-V0300
VMS62TO71U2_PCSI-V0200
In order to receive all the corrections listed in this
kit, the following remedial kits should also be installed:
VMS712_RMS-V0100
ECO KIT SUMMARY:
An ECO kit exists for CLIUTL on OpenVMS Alpha V7.1-2. This kit addresses
the following problems:
Problems Addressed In VMS712_CLIUTL-V0100:
o A SET DEVICE/SERVED <TAPEDEV> command may fail with a
%SYSTEM-F-IVDEVNAM error. This problem could occur when an
ALPHA system is mistakenly booted with a SYSGEN parameter
TMSCP_SERVE_ALL = 0. As a result, none of the tape drives are
served to the cluster clients. Consequently, typing the SET
DEVICE/SERVED <TAPEDEV> command fails. Since the SYSGEN
parameter is not dynamic, a reboot of the server is necessary
to make the tape devices available to the client nodes.
This change extends functionality of the SET DEVICE/SERVED on
ALPHA servers to include tape devices.
Images Affected: [SYSEXE]SET.EXE
o If the $SET AUDIT/SERVER=START command fails, the system
STARTUP process will hang in a loop waiting for the
AUDIT_SERVER process to start.
Images Affected: [SYSEXE]SETAUDIT.EXE
o When an unprivileged user attempts to access a queue and is
denied, the event is not alarmed or audited.
Images Affected: [SYSEXE]SUBMIT.EXE
o Add a new /CONTENTION_POLICY qualifier to SET RMS_DEFAULT to
address locking fairness issues.
The new Alpha global buffer read-mode lock support introduced
in V7.2-1H1 is functionally compatible with both VAX and older
Alpha releases. Operations in mixed clusters produce correct
results. However, there is a locking fairness issue that may
arise with mixed cluster operations.
In a mixed cluster environment with very high contention for
specific buckets, it is possible for accesses to write-shared
files on nodes using read-mode bucket locking to dominate
access to a bucket. Nodes without this support might be
unable to access the bucket for a protracted period of time.
It is also possible to observe comparable behavior on all
OpenVMS versions when dealing with accesses to write-shared
files without global buffers enabled -- even on a standalone
system. A similar fairness issue between lock conversions and
new lock requests may be observed in which the new lock
requests may remain un-granted for an extended period of time.
This kit provides an interface for RMS support for a new
option to improve fairness under high contention conditions
for write-shared files. The option is controlled using the
/CONTENTION_POLICY qualifier to the DCL command SET
RMS_DEFAULT. The option may be set at a process or system
level. Since selecting this option may noticeably increase
locking overhead and since many applications will never
encounter this issue, the default system behavior leaves this
option disabled. A future lock management enhancement should
make this fairness workaround unnecessary for later releases.
The following are valid PROCESS keywords (/SYSTEM not
specified) for SET RMS_DEFAULT/CONTENTION_POLICY:
NEVER Never use the higher overhead option to
improve fairness for any write-shared files
accessed by this process; minimal
overhead.
SOMETIMES Use this option for fairer bucket access
(but higher overhead) to any write-shared
files with global buffers enabled that are
accessed by this process.
ALWAYS Use this option for fairer bucket access
(but higher overhead) to all write-shared
files accessed by this process.
SYSTEM_DEFAULT Use system setting. Note that this keyword
(Default) is disallowed with /SYSTEM.
The following are valid SYSTEM keywords (/SYSTEM specified):
NEVER (Default) Never use the higher overhead
option to improve fairness for any
write-shared files accessed on the system;
minimal overhead.
SOMETIMES Use this option for fairer bucket access
(but higher overhead) to any write-shared
files with global buffers enabled that are
accessed on the system.
ALWAYS Use this option for fairer bucket access
(but higher overhead) to all write-shared
files accessed on the system.
Images Affected: [SYSEXE]SET.EXE
o SHOW LOGICAL allocates virtual address space based on pagesize
rather than pagelet size for Alpha only. De-allocation of
used virtual memory was incorrect.
Images Affected: [SYSEXE]SHOW.EXE
o If the virtual-circuit (PB$ path-block) count exceeds four
times the SCS-node count, a SHOW CLUSTER command will hang on
startup on cluster nodes with many SCS ports, e.g., CIPCA,
CIXCD, MC:... or Pxx0: devices. An "SCS-node" is defined as
any SCS-speaking node, such as HSJxx/HSCxx Storage
Controllers, RFxx DSSI disk controllers, or VMS nodes, etc.
Images Affected: [SYSEXE]SHWCLSTR.EXE
RELATED ARTICLES:
Detailed articles describing the problems listed above may exist in
the OPENVMS database. To view these articles, open the appropriate
product database and perform a query using either of the following
search strings: 'VMS712_CLIUTL-V0100' or 'VMS712_CLIUTL'.
ECO KIT ORDERING INSTRUCTIONS:
If after an evaluation you wish to obtain this kit, request it
electronically using the appropriate Advanced Electronic Services
(AES) Service Tool. If you are not familiar with how to request
kits electronically, open the DIA, WIS or DSNLINK database and
review the article entitled:
[AES] How To Electronically Request ECO Kits Using Service Tools
INSTALLATION NOTES:
No reboot is necessary after successful installation of this kit.
However, users must log out and log back in to use the new features
provided by this kit.
Install this kit with the POLYCENTER Software installation utility
by logging into the SYSTEM account, and typing the following at the
DCL prompt:
PRODUCT INSTALL VMS712_CLIUTL /SOURCE=[location of Kit]
The kit location may be a tape drive, CD, or a disk directory that
contains the kit.
Additional help on installing PCSI kits can be found by typing
HELP PRODUCT INSTALL at the system prompt
All trademarks are the property of their respective owners.
==========================================================================
| Table of Kit Image Information |
+----------------------------+----------+-----------------+--------------+
| | Overall | Image File | Image Link |
| Image Name | Checksum | Identification | Date/Time |
+----------------------------+----------+-----------------+--------------+
| CLIUTLMSG.EXE | 36ADDA6D | X-3 | 7-DEC-2000 |
| | | 17:14:22.78 |
+----------------------------+----------+-----------------+--------------+
| SET.EXE | 8845EEE2 | X-4 | 7-DEC-2000 |
| | | 17:13:42.45 |
+----------------------------+----------+-----------------+--------------+
| SETAUDIT.EXE | A13549A2 | X-12 | 7-DEC-2000 |
| | | 17:13:57.68 |
+----------------------------+----------+-----------------+--------------+
| SHOW.EXE | 19810A58 | X-1 | 7-DEC-2000 |
| | | 17:13:30.22 |
+----------------------------+----------+-----------------+--------------+
| SHWCLSTR.EXE | 3426DD6E | X-22 | 7-DEC-2000 |
| | | 17:13:53.85 |
+----------------------------+----------+-----------------+--------------+
| SUBMIT.EXE | CB65BB51 | X-27 | 7-DEC-2000 |
| | | 17:13:40.11 |
+----------------------------+----------+-----------------+--------------+
|
