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fs-hpux1123-4.1MP2RP13
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 Basic information
Release type: Rolling Patch
Release date: 2012-05-31
OS update support: None
Technote: None
Documentation: None
Popularity: 493 viewed    20 downloaded
Download size: 5.36 MB
Checksum: 3060026937

 Applies to one or more of the following products:
File System 4.1MP2 On HP-UX 11i v2 (11.23)
Storage Foundation 4.1MP2 On HP-UX 11i v2 (11.23)
Storage Foundation Cluster File System 4.1MP2 On HP-UX 11i v2 (11.23)
Storage Foundation for Oracle RAC 4.1MP2 On HP-UX 11i v2 (11.23)
Storage Foundation HA 4.1MP2 On HP-UX 11i v2 (11.23)

 Obsolete patches, incompatibilities, superseded patches, or other requirements:

This patch supersedes the following patches: Release date
fs-hpux1123-4.1MP2RP11 (obsolete) 2011-07-12
fs-hpux1123-4.1MP2RP8 (obsolete) 2010-04-14
fs-hpux1123-4.1MP2RP5b (obsolete) 2009-06-04

This patch requires: Release date
fs-hpux1123-4.1MP2RP9 (obsolete) 2010-10-12
fs-hpux1123-4.1MP2RP4 2008-12-24

 Fixes the following incidents:
2768726, 2768728, 2768731, 2778483, 2778533

 Patch ID:
PHCO_42968
PHKL_43011

 Readme file  [Save As...]
                          * * * READ ME * * *
                * * * Veritas File System 4.1 MP2 * * *
                      * * * Rolling Patch 13 * * *
                         Patch Date: 2012-05-31


This document provides the following information:

   * PATCH NAME
   * PACKAGES AFFECTED BY THE PATCH
   * BASE PRODUCT VERSIONS FOR THE PATCH
   * OPERATING SYSTEMS SUPPORTED BY THE PATCH
   * INCIDENTS FIXED BY THE PATCH
   * INSTALLATION PRE-REQUISITES
   * INSTALLING THE PATCH
   * REMOVING THE PATCH


PATCH NAME
----------
Veritas File System 4.1 MP2 Rolling Patch 13


PACKAGES AFFECTED BY THE PATCH
------------------------------
VRTSfsman
VRTSvxfs


BASE PRODUCT VERSIONS FOR THE PATCH
-----------------------------------
   * Veritas File System 4.1 MP2
   * Veritas Storage Foundation for Oracle RAC 4.1 MP2
   * Veritas Storage Foundation Cluster File System 4.1 MP2
   * Veritas Storage Foundation 4.1 MP2
   * Veritas Storage Foundation High Availability 4.1 MP2


OPERATING SYSTEMS SUPPORTED BY THE PATCH
----------------------------------------
HP-UX 11i v2 (11.23)


INCIDENTS FIXED BY THE PATCH
----------------------------
This patch fixes the following Symantec incidents:

Patch ID: PHKL_43011, PHCO_42968

* 2768726 (Tracking ID: 1092933)

SYMPTOM:
The system may panic in the vx_fsync_chains() function when  it tries to sleep 
in the interrupt context. The following stack trace is displayed:
vx_event_wait
vx_delay2
vx_fsync_chains
vx_disable
vx_dataioerr
vx_pageio_done

DESCRIPTION:
While handling the external interrupt, the  vx_pageio_done() function calls the 
function vx_fsync_chains() function. The vx_fsync_chains() function may sleep 
during the execution.

The function vx_fsync_chains() is required in the case of Input/output  (IO)
errors. The function vx_fsync_chains() is called at a couple of places, when 
the I/O strategy fails. But, the error variable is overwritten improperly.

RESOLUTION:
The code is modified to save Input/Output errors so that the vx_fsync_chains() 
function can be called and the call to vx_fsync_chains() is removed from the 
vx_disable().

* 2768728 (Tracking ID: 2680946)

SYMPTOM:
The ls (1M), find(1M) or other lookup operations can trigger a panic with the 
following stack trace: 
spinlock+0x40 
vx_itryhold+0x40 
vx_dnlc_lookup+0x1b0 
vx_cbdnlc_lookup+0x130 
vx_fast_lookup+0x120 
vx_lookup+0x3c0 
lookuppnvp+0x2d0 
lookuppn+0x90 
lookupname+0x60 
vn_open+0xa0 
copen+0x170 
open+0x80 
syscall+0x920

DESCRIPTION:
The panic is triggered because of a NULL pointer de-reference while inserting 
an entry in the Data Name Lookup Cache (DNLC) which has a NULL child pointer.

RESOLUTION:
The code is modified to include a global variable which is incremented when a 
DNLC with NULL child pointer gets inserted. A preventive code is added to avoid 
the panic and such occurrences are tracked using the global variable.

* 2768731 (Tracking ID: 2376382)

SYMPTOM:
vxrestore man page does not specify that vxrestore will fail if -b option is 
used while taking dump and block size used is greater than default max i.e. 63
at the same time -b option is not used while restoring from dump.

DESCRIPTION:
If vxdump is used to take the dump and -b option is used with block size greater
than default max i.e. 63 then vxrestore fails to restore this dump if used
without -b options. This is because vxrestore attempts to dynamically determine
the tape block size , up to default maximum of 63.
This is not mentioned in the man page of vxrestore man page.

RESOLUTION:
Added
"vxrestore will attempt to dynamically determine the tape block size , upto the
default maximum of 63.So, if -b option is used when creating a dump, but not
used when restoring the dump, the restore will fail when the tape block size is
specified to be greater than 63."
 to -b option of vxrestore man page.

* 2778483 (Tracking ID: 2740939)

SYMPTOM:
The unmounting  of a file system can cause a Transfer of Control (TOC) on an HP 
11.23 service guard environment with many threads. The following stack trace is 
displayed:
spinunlock() 
vx_worklist_process()
vx_worklist_thread()
kthread_daemon_startup()

DESCRIPTION:
The TOC is caused because of a heavy spin-lock contention on a Veritas File 
System (VxFS) spin-lock. During the unmount of a VxFS file system, worker 
threads are created to scan the inode
cache and remove the inodes related to the mount point. The number of worker
threads is calculated based on the number of hash-lists in the inode cache.
The number of hash-lists in the inode cache is calculated based on the system
memory rather than the tuned vxfs_ninode value. If the system memory is huge and
the tuned vxfs_ninode value is less, then the number of hash-lists in the inode 
cache would be unnecessarily more which can result in the spin-lock contention 
during the unmount.

RESOLUTION:
The code is modified to calculate the number of hash-lists based on the tuned 
vxfs_ninode value.

* 2778533 (Tracking ID: 2693010)

SYMPTOM:
Formatted uncompressed files created by command catman(1M) are not removed
during removal of VxFS man patches.

DESCRIPTION:
Currently Formatted compressed files created by commands catman(1M), man(1) etc.
for VxFS man pages are not removed during removal of patches . They remain
available even after VxFS package removal.

RESOLUTION:
Code is changed in postremove and preinstall packaging script to cleanup any
remaining formatted uncompressed files created by command catman.


INSTALLING THE PATCH
--------------------
1.Installing VxFS 4.1 MP2RP13 patch:

a)If you install this patch on a CVM cluster, install it one
 system at a time so that all the nodes are not brought down
 simultaneously.

b)VxFS 4.1(GA)  must be installed before applying these
  patches.

c)To verify the VERITAS file system level, enter:

     # swlist -l product | egrep -i "VRTSvxfs"

  VRTSvxfs     4.1        VERITAS File System
  VRTSfsman    4.1        VERITAS File System Manuals

d)All prerequisite/corequisite patches have to be installed.The Kernel patch
  requires a system reboot for both installation and removal.

e)To install the patch, enter the following command:

# swinstall -x autoreboot=true -s <patch_directory>    PHKL_43011 PHCO_42968


REMOVING THE PATCH
------------------
Removing VxFS 4.1-MP2RP13 patch:

a)To remove the patch, enter the following command:

# swremove -x autoreboot=true PHKL_43011 PHCO_42968


SPECIAL INSTRUCTIONS
--------------------
NONE


OTHERS
------
NONE





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