TECHNICAL INFORMATION DOCUMENT

TITLE:              PTF200 - Patch for NFS Export PANIC
DOCUMENT ID:        TID300152
DOCUMENT REVISION:  B
DATE:               25JAN95
ALERT STATUS:       Yellow
INFORMATION TYPE:   Symptom Solution
README FOR:         PTF200

PRODUCT and VERSION:
UnixWare 1.1

ABSTRACT:

This file contains PTF200 - Patch for NFS Export PANIC.  Installs a 
new nfs driver to correct a potential PANIC which can occur when an 
already-shared filesystem is again shared (perhaps to grant access 
by additional systems) while NFS operations are in progress on the 
filesystem. This patch requires UnixWare 1.1.1, UnixWare 1.1.2, 
or UnixWare 1.1.3.

SYMPTOM

The symptom is a PANIC, as described in the Abstract.

SOLUTION

Apply the ptf200 file.


Installation Instructions:

DATATYPE: datastream

1.  Download the ptf200.Z and ptf200.txt files to the /tmp directory  
    on your machine.

2.  Read the release notes contained in this file and follow the
    instuctions to add the packages to your system.

3.  Now become root, uncompress the file and add the package to your 
    system using the following commands:

        $ su
        # uncompress /tmp/ptf200.Z
        # pkgadd -d /tmp/ptf200 ptf200

Solution Specifics

General Description.
-------------------

This patch installs an new "nfs" driver with updates to insure that 
kernel data structures used during filesystem operations are not 
freed while the operation is still in progress.

New Features.
------------

None

Software Notes and Recommendations.
----------------------------------

This patch should be installed on all UnixWare 1.1.1, 1.1.2 or 1.1.3 
systems. If Update 1.1.2 or 1.1.3 is installed after installing this 
patch, it must be reinstalled (it is recommended, but not required, 
that this patch be removed before installing any Update, then 
subsequently reinstalled).

Hardware Notes and Recommendations.
----------------------------------

This PTF is targeted for the i386, i486 and Pentium CPU's.

Installation Instructions.
-------------------------

This PTF consists of 1 3.5 inch floppy.  Insert the floppy into the 
drive and, while logged in as root, type

     pkgadd -d diskette1

and follow the instructions output by pkgadd.