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<TITLE>
TITLE: HP Tru64 UNIX 5.1B-2/PK4 - UBC-related Fixes and Previous vfs.mod Fixes
Copyright (c) Hewlett-Packard Company 2005. All rights reserved.
PRODUCT: HP Tru64 UNIX [R] V5.1B-2
SOURCE: Hewlett-Packard Company
ECO INFORMATION:
ECO Name: T64KIT0024519-V51BB25-E-20041218
ECO Kit Approximate Size: 3.73MB
Kit Applies To: HP Tru64 UNIX V5.1B-2/PK4 (BL25)
ECO Kit CHECKSUMS:
/usr/bin/sum results:
37058 3820
/usr/bin/cksum results:
3602263407 3911680
MD5 results:
1c10d91aef206d1fa1e8ec9fca261d68
SHA1 results:
75b4cdb22883b670fc3eb6b57a02e04ffbd7cdc8
ECO KIT SUMMARY:
A dupatch-based, Early Release Patch kit exists for HP Tru64 UNIX V5.1B-2/PK4
that contains solutions to the following problem(s):
This early release patch (ERP) addresses panics in the unified buffer cache
(UBC) subsystem that can occur on HP Tru64 UNIX 5.1B-2/PK4 systems.
In addition, the ERP combines the UBC-related fixes with fixes provided in
previous 5.1B-2/PK4 ERPs that also affect vfs.mod.
Details of all these corrections follow.
A. UBC-related fixes
HP Tru64 UNIX 5.1B-2/PK4 systems could encounter panics in the UBC
subsytem. The panics are typically seen as kernel memory fault (KMF) panics
coming from the ubc_page_stealer() or ubc_memory_purge() functions. Typical
stack traces are the following:
boot
panic
simple_lock_fault
mcs_unlock_found_violation
bc_free_page
ubc_bigpage_alloc
ubc_page_alloc
ubc_lookup
cfs_getapage
cfs_getpages
cfs_getpage
u_seg_fault
u_map_fault
vm_fault
trap
_XentMM
panic
trap
_XentMM
ubc_memory_purge
ubc_purge_thread
B. Hashing that is not marked VPP_REPL
A fix announced in EA BU040802_EW01 corrects a panic with the following
panic string:
Hashing that is not marked VPP_REPL
The stack trace for this panic appears as:
panic
vm_page_checkinsert_bucket
ubc_bigpage_alloc
ubc_page_alloc
ubc_lookup
bs_refpg_int
bs_refpg
seq_search
msfs_lookup
namei
_F64_stat1
pre_F64_stat1
syscall
_Xsyscall
C. vm_pg_free: page on o/h list
A fix that was also announced in EA BU040802_EW01 corrects a panic with the
following panic string:
vm_pg_free: page on o/h list
The stack trace for this panic appears as:
panic
vm_pg_free
ubc_free_page
ubc_page_alloc
ubc_lookup
cfs_getapage
cfs_getpages
cfs_getpage
u_seg_fault
u_map_fault
vm_fault
trap
_XentMM
The Patch Kit Installation Instructions and the Patch Summary and Release
Notes documents provide patch kit installation and removal instructions
and a summary of each patch. Please read these documents prior to
installing patches on your system.
The patches in this ERP kit will also be available in the next mainstream
patch kit - HP Tru64 UNIX V5.1B-3.
INSTALLATION NOTES:
1) Install this kit with the dupatch utility that is included in the patch
kit. You may need to baseline your system if you have manually changed
system files on your system. The dupatch utility provides the baselining
capability.
2) The patch in this ERP kit does not have any file intersections with any
other ERP available at this time for this product version.
3) This ERP kit will NOT install over any Customer Specific Patches (CSPs)
that have file intersections with this ERP kit. Contact your normal
Service Provider for assistance if the installation of this ERP kit is
blocked by any of your installed CSPs.
INSTALLATION PREREQUISITES:
You must have installed HP Tru64 UNIX V5.1B-2 PK4 (BL25) prior to
installing this Early Release Patch Kit.
SUPERSEDE INFORMATION:
Kit T64KIT0024519-V51BB25-E-20041218
replaces
kit T64KIT0023187-V51BB25-E-20040804
KNOWN PROBLEMS WITH THE PATCH KIT:
None.
RELEASE NOTES FOR T64KIT0024519-V51BB25-E-20041218:
Release Notes
This document summarizes the contents and special instructions for the
Tru64 UNIX V5.1B patches contained in this kit.
For information about installing or removing patches, baselining,
and general patch management, see the Patch Kit Installation
Instructions document.
1 Release Notes
This Early Release Patch Kit Distribution contains:
- fixes that resolve the problem(s) reported in:
o QXCM1000188533 QXCM1000195779 QXCM1000200466
* for Tru64 UNIX V5.1B T64V51BB25AS0004-20040616.tar (BL25)
This kit includes a patch which requires system reboot.
The patches in this kit are being released early for general customer use.
Refer to the Release Notes for a summary of each patch and installation
prerequisites.
Patches in this kit are installed by running dupatch from the directory
in which the kit was untarred. For example, as root on the target system:
> mkdir -p /tmp/CSPkit1
> cd /tmp/CSPkit1
> <copy the kit to /tmp/CSPkit1>
> tar -xpvf DUV40D13-C0044900-1285-20000328.tar
> cd patch_kit
> ./dupatch
2 Special Instructions
There are no special instructions for Tru64 UNIX V5.1B Patch C830.03
3 Summary of CSPatches contained in this kit
Tru64 UNIX V5.1B
PatchId Summary Of Fix
----------------------------------------
C830.03 Addresses UBC issues
4 Additional information from Engineering
None
5 Affected system files
This patch delivers the following files:
Tru64 UNIX V5.1B
Patch C830.03
./sys/BINARY/vfs.mod
CHECKSUM: 05303 654
SUBSET: OSFBIN540
[R] UNIX is a registered trademark in the United States and other countries
licensed exclusively through X/Open Company Limited.
Copyright Hewlett-Packard Company 2005. All Rights reserved.
This software is proprietary to and embodies the confidential technology
of Hewlett-Packard Company. Possession, use, or copying of this
software and media is authorized only pursuant to a valid written license
from Hewlett-Packard or an authorized sublicensor.
This ECO has not been through an exhaustive field test process.
Due to the experimental stage of this ECO/workaround, Hewlett-Packard
makes no representations regarding its use or performance. The
customer shall have the sole responsibility for adequate protection
and back-up data used in conjunction with this ECO/workaround.
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