Browse Prior Art Database

Automatic IPL

IP.com Disclosure Number: IPCOM000107743D
Original Publication Date: 1992-Mar-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Day, AM: AUTHOR [+2]

Abstract

Disclosed is a mechanism that allows MVS to automatically re-IPL itself after a wait state (with or without taking a Stand-Alone Dump prior to IPLing) (Image Omitted)

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 84% of the total text.

Automatic IPL

       Disclosed is a mechanism that allows MVS to automatically
re-IPL itself after a wait state (with or without taking a
Stand-Alone Dump prior to IPLing)

                            (Image Omitted)

      During its system termination sequence, prior to placing the
last CPU in a disabled wait state, MVS will consult the appropriate
SYS1.  PARMLIB member to determine the action to take.  The action
may be one of the following:
       .    do nothing (i.e., wait state),
       .    perform I/O reset, then wait state,
       .    IPL the specified system,
       .    take Stand-Alone Dump, then IPL the specified system.

      If the action other than "do nothing" is prescribed, MVS will
submit the request for the processor controller element (PCE) to
perform the specified action.

      If the action was to take stand-alone dump and re IPL MVS
afterwards, prior to invoking the PCE, MVS will store the "re-IPL
MVS" request and appropriate information (IPL device and load
parameter) for SADMP to use.

      Stand-Alone Dump will obtain the instructions to IPL MVS from
the data stored by MVS.  Upon completion, SADMP will request the PCE
to IPL MVS using the stored parameters.

      The following transitions are possible:
        MVS ->  wait state (no action)
        MVS ->  I/O reset
        MVS ->  SADMP ->  wait (no action)
        MVS -...