OpenVMS_STORAGE VMS72_SHADOWING-V0100 Alpha V7.2 Shadowing ECO Summary

TITLE: OpenVMS_STORAGE VMS72_SHADOWING-V0100 Alpha V7.2 Shadowing ECO Summary

Modification Date:  26-JAN-2000
Modification Type:  New Kit VMS72_SHADOWING-V0100
 
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 2000.  All rights reserved.

PRODUCT:    OpenVMS Alpha

COMPONENT:  Shadow Driver and Shadow Server
            SYS$SHDRIVER.EXE
            SHADOW_SERVER.EXE

SOURCE:     Compaq Computer Corporation

ECO INFORMATION:

     ECO Kit Name:  VMS72_SHADOWING-V0100
                    DEC-AXPVMS-VMS72_SHADOWING-V0100--4.PCSI
     ECO Kits Superseded by This ECO Kit:  None
     ECO Kit Approximate Size:  1968 Blocks

     Kit Applies To:  OpenVMS Alpha V7.2
     System/Cluster Reboot Necessary:  Yes
     Rolling Re-boot Supported:  Yes
     Installation Rating:  INSTALL_2
                            2 - To be installed on all systems running
                                the listed version(s) of OpenVMS and
                                using the following feature(s):
                                SHADOWING

     Kit Dependencies:

       The following remedial kit(s) must be installed BEFORE
       installation of this kit:

         VMS72_UPDATE-V0200

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

         None 


ECO KIT SUMMARY:

An ECO kit exists for Volume Shadowing on OpenVMS Alpha V7.2
This kit addresses the following problems: 

PROBLEMS ADDRESSED IN VMS72_SHADOWING-V0100 KIT

      o  There is An XQP crash in MOVEFILE when a compare  error  occurs
         on  a  file header, while a disk that is shadow copying is also
         being defragged with DFO.

         Images Affected:

          -  [SYS$LDR]SYS$SHDRIVER.EXE
          -  [SYSEXE]SHADOW_SERVER.EXE

      o  When a copy operation that  interrupts  a  merge  operation  is
         terminating,  it finds that there are no members marked for the
         merge and the thread crashes the system with a SHADDETINCON bug
         check.

         Images Affected:

          -  [SYS$LDR]SYS$SHDRIVER.EXE
          -  [SYSEXE]SHADOW_SERVER.EXE

      o  SHOW DEVICES shows zero  percent  merged  status  although  the
         shadow set status does not indicate that a merge is required.

         Images Affected:

          -  [SYS$LDR]SYS$SHDRIVER.EXE
          -  [SYSEXE]SHADOW_SERVER.EXE

      o  Bit 16 in SHADOW_SYS_DISK can be set by the user  to  eliminate
         using remote members of the shadowset for reads.  Occasionally,
         use of bit 16 fails to  eliminate  remote  members  from  being
         used.

         Images Affected:

          -  [SYS$LDR]SYS$SHDRIVER.EXE
          -  [SYSEXE]SHADOW_SERVER.EXE

      o  A CPUSPINWAIT bug check can occur, if the read of the SCB, of a
         shadow set member, cannot pass the checksum test.

         Images Affected:

          -  [SYS$LDR]SYS$SHDRIVER.EXE
          -  [SYSEXE]SHADOW_SERVER.EXE

      o  DCD (Disk Copy Data) will not  always  be  initiated  properly.
         During  an  assisted  copy  operation, if the source member was
         dismounted or  otherwise  removed  from  the  shadow  set,  the
         connection to the controller would not clean up correctly.

         Images Affected:

          -  [SYS$LDR]SYS$SHDRIVER.EXE
          -  [SYSEXE]SHADOW_SERVER.EXE

      o  A full copy operation that is interrupted for a mini-merge will
         not complete the full copy operation correctly.

         Images Affected:

          -  [SYS$LDR]SYS$SHDRIVER.EXE
          -  [SYSEXE]SHADOW_SERVER.EXE

      o  Typing incorrect commands results in a system crash

         Images Affected:

          -  [SYS$LDR]SYS$SHDRIVER.EXE
          -  [SYSEXE]SHADOW_SERVER.EXE

      o  When two disks are added to  a  shadowset  in  the  same  mount
         command,  the  copies  are  done  sequentially  instead  of  in
         parallel.  This causes the copies to take twice as long as they
         should.

         Images Affected:

          -  [SYS$LDR]SYS$SHDRIVER.EXE
          -  [SYSEXE]SHADOW_SERVER.EXE


INSTALLATION NOTES:

The images in this kit will not take effect until the system is
rebooted.  If there are other nodes in the VMScluster, they must 
also be rebooted in order to make use of the new image(s).  

If it is not possible or convenient to reboot the entire cluster at 
this time, a rolling re-boot may be performed.

All trademarks are the property of their respective owners.

Files on this server are as follows:

»dec-axpvms-vms72_shadowing-v0100--4.README
»dec-axpvms-vms72_shadowing-v0100--4.CHKSUM
»dec-axpvms-vms72_shadowing-v0100--4.pcsi-dcx_axpexe
»vms72_shadowing-v0100.CVRLET_TXT