OpenVMS VAXMTAA03_062 OpenVMS VAX V6.2 MTAAACP ECO Summary

TITLE: OpenVMS VAXMTAA03_062 OpenVMS VAX V6.2 MTAAACP ECO Summary
 
NOTE:  An OpenVMS saveset or PCSI installation file is stored
       on the Internet in a self-expanding compressed file.
       The name of the compressed file will be kit_name-dcx_vaxexe
       for OpenVMS VAX or kit_name-dcx_axpexe for OpenVMS Alpha.
 
       Once the file is copied to your system, it can be expanded
       by typing RUN compressed_file.  The resultant file will
       be the OpenVMS saveset or PCSI installation file which
       can be used to install the ECO.
 
Copyright (c) Compaq Computer Corporation 1999.  All rights reserved.

                                                                              
Modification Date:  18-MAR-1999                                              
Modification Type:  Article Updated as VAXMOUN03_062 is Now Available


Modification Date:  02-DEC-1998                                               
Modification Type:  Updated Article to list the dependent ECO                
                    VAXMOUN03_062 as unavailable until a later date.         


Modification Date:  20-NOV-1998                                              
Modification Type:  New ECO Kit    


OP/SYS:     OpenVMS VAX

COMPONENT:  MTAAACP   MTAAACP.EXE

SOURCE:     Compaq Computer Corporation


ECO INFORMATION:

     ECO Kit Name:  VAXMTAA03_062
     ECO Kits Superseded by This ECO Kit:  VAXMTAA02_062
                                           VAXMTAA01_062
                                           VAXMTAA02_061
     ECO Kit Approximate Size:  162 Blocks
     Kit Applies To:  OpenVMS VAX V6.2
     System/Cluster Reboot Necessary:  No
     Installation Rating:   INSTALL_3
                            3 - To be installed on all systems running         
                                the listed versions of OpenVMS which          
                                are experiencing the problems described.

     KIT DEPENDENCIES:

     The  following  remedial  kit(s)  must  be  installed   BEFORE
     installation of this, or any required kit:

       VAXY2K02_062


     In order to receive all the corrections listed  in  this  kit,
     the following remedial kits should also be installed:


       VAXSYSA02_062
       VAXBACK03_062
       VAXMOUN03_062
       VAXDISM02_062
       VAXINIT01_062

ECO KIT SUMMARY:

An ECO kit exists for MTAAACP on OpenVMS VAX 6.2. This kit addresses
the following problems:

Problems addressed in the VAXMTAA03_062 kit:

  o  A possible system crash occurs during Host Based  RAID  Unbinds    
     with  MME code enabled.  A mailbox read synchronization problem    
     causes the crash.                                                  
                                                                    
     This problem only occurs when a host-based RAID UNBIND  command    
     is done while an MME-based application is running.                 
                                                                    
     This problem can occur in several different code areas  of  the    
     operating system.  In order to eliminate all known instances of    
     this  problem,  the   following   remedial   kits   (or   their    
     supersedants) will also need to be installed:                      
                                                                    
      VAXSYSA02_062                                                      
      VAXBACK03_062                                                      
      VAXMOUN03_062                                                      
      VAXINIT01_062                                                      
      VAXDISM02_062                                                      
                                               
  o  A process using MME could potentially "miss" the VOL1 label  on    
     a  tape.  Also, a process could "hang" trying to send a message    
     to the MME process.                                                


Problems addressed in the VAXMTAA02_062 kit:

    o  This kit is a re-issue of the VAXMTAA01_062 kit with the
       OpenVMS VAX V6.2 portion only.  The V6.1 section of the
       VAXMTAA01_062 kit will be superseded by a future Shadowing kit.


Problems addressed in the VAXMTAA01_062 kit for OpenVMS VAX V6.1, V6.2

    o  The system crashes with a NOBVPVCB bugcheck.  The crash occurs
       on the kernel stack with MTAAACP.EXE as the current image.

    o  The system crashes with an XQPERR while dismounting a MAD drive.


Problems addressed in the VAXMTAA01_062 kit for OpenVMS VAX V6.1

    o  If a tape is initialized with a non-blank accessibility field
       and then mounted using /OVERRIDE=(ACCESSIBILITY), the tape
       mounts but cannot be read or written to.  The command format to
       initialize the tape would be similar to:

             INIT/LABEL=VOLUME_ACCESSIBILITY="+" tape: LABEL

       In addition, the following OPCOM messages are generated and the
       tape volume is automatically unloaded after an attempt to WRITE
       or READ the tape volume:

       %%%%%%%%%%% OPCOM 12-DEC-1994 12:57:23.53  %%%%%%%%%%%  Message
       from  user  USERXX  on  NODEXX non-blank accessibility field in
       volume labels on SYS$DEVICE:

       %%%%%%%%%%% OPCOM 12-DEC-1994 12:57:23.54 %%%%%%%%%%%

    o  If a user tried to kill the MTAAACP process or process that
       emitted the QIO, MTAAACP would go into RWAST state and hang.

Problems addressed in the VAXMTAA01_061 kit for OpenVMS VAX V6.1:

   o  If the wrong volume is inserted as the next volume, MTAAACP
      cancels the request and then hangs.



INSTALLATION NOTES:

The system does not need to be rebooted after this kit is installed.

However, if you have other nodes in your OpenVMS VAXcluster, they
should be rebooted or you should install this kit on each system in
order to make use of the new image(s).

Files on this server are as follows:

»vaxmtaa03_062.README
»vaxmtaa03_062.CHKSUM
»vaxmtaa03_062.CVRLET_TXT
»vaxmtaa03_062.a-dcx_vaxexe