AlphaServer SC patch kit:
==========================

AlphaServer SC Version : SCV2.6 SSB 
Kit Name:                SCV26SSB105698
Release Date:            15  April  2004
PTR:                     153-2-1334
IPMT Number:             CFS.105698
Abstract: Panic: elan1: iovcnt limit exceeded


Description of Patch:
=====================
This patch fixes the following problems:

1. This patch fixes an issue in cfs.mod which was introduced 
when a change for a microchannel (not elan) layer was applied.
This is not part of the SC code, and should not have caused
problems. However, this led to an elan panic in certain 
circumstances.

This patch also includes all previous cfs.mod patches:

2. SCV26SSB105440
(a)
A vm_map_lock hang in scext_wire_pages when using SCFS file systems.
When this problem occurs there may also be threads stuck with 
vm_fault errors.  The patch fixes SCFS customizations to cfs code to
to release some extra vm_map locks which were introduced in
V5.1B of Tru64 Unix.

(b)
A "pg_nwriters going negative" panic in ubc_page_release
which was caused by a bug in cfs code.

3. SCV26SSB105525
Fixes a problem noticed on a cluster client node which had 
two users accessing a file from an NFS imported filesystem 
mounted on another node in the cluster. One user had write 
permission and was writing to the file. The second user had 
have read permission only and was reading the file. The cluster 
node that mounted the filesystem (not the node running the 
two user processes) reported an NFS error indicating a write 
data transfer had been lost.

This patch supercedes patches SCV26SSB105440 and SCV26SSB105525.


Kit location:
=============
The patch kit is SCV26SSB105698.tar.gz and it is available from
ITRC.


Prerequisites:
==============
Before installing this Patch kit, you should ensure the following:

1) You have all mandatory patches for this release installed


Kit checksum:
=============
cksum values for kit,

619784970 939276 SCV26SSB105698.tar.gz

Updated files:
==============

A list of the files included in this patch is given below
along with the cksum values for each file.

2359019294 1530263 ./usr/opt/TruCluster/sys/cfs.mod

Instructions:
=============
This patch is provided as a setld installable kit.  Unpack it
into a directory that is NFS mounted on all domains e.g.
/nfs/<kit name> and install it as follows:

Patch required on Management Server (if used) : NO
Patch required on Domains                     : YES


On Domains:
-----------
    Install the patch as follows:
    # cd /nfs/<kit name>
    # scrun -d all setld -l /nfs/<kit name> <kit name>
    # scrun -d all BuildKernels
    # scrun -d all DeployKernels
    # sra shutdown -domains all
    # sra boot -domains all

    To remove the patch use the following commands:
    # scrun -d all setld -d <kit name>
    # scrun -d all BuildKernels
    # scrun -d all DeployKernels
    # sra shutdown -domains all
    # sra boot -domains all

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