IBM Support

VM65485: BACKOUT DURING HARDWARE ACTIVATE CAN LEAD TO INCONSISTENT STATE

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • When a bad hardware response code is given for one of the change
    requests of an activate, a backout of the activate action is
    started. This might be unsuccessful.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: 1. z/VM HCD users performing bigger          *
    *                 dynamic activates                            *
    *                 2. z/VM HCD users working with IODFs         *
    *                 containing processors where the              *
    *                 processors support is not installed          *
    ****************************************************************
    * PROBLEM DESCRIPTION: In a backout situation a OC5 might      *
    *                      occur.                                  *
    ****************************************************************
    * RECOMMENDATION: This apar will ONLY address the inaccurate   *
    *                 message regarding the 2 byte link address.   *
    *                 If the processor support is not applied to   *
    *                 the machine future activates will still be   *
    *                 rejected. Apply the fix for this APAR AND    *
    *                 ensure that you have the correct processor   *
    *                 support code for your machine.               *
    ****************************************************************
    1. In a backout situation usually all hardware change request
    have are rolled back in reverse order. If more then about 1000
    requests had to be backed out, the backout action failed. A
    recovery action could not solve the problem and a POR is
    needed.
    2. When the processor support PTF is not installed, an
    ACTIVATE for this processor may be rejected with message
    CBDA863I, MSGCBDA863:"Activate request contains 2-byte link
    address(es) for CU(s) <cu-list>. This is not supported by the
    active processor or OS level."In other cases, the ACTIVATE may
    complete without error message, but changes involving new
    processor features are not applied to the HSA.
    

Problem conclusion

  • The cause of the failed backout (addressing wrong storage) was
    fixed.
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    VM65485

  • Reported component name

    HCD/HCM

  • Reported component ID

    568411219

  • Reported release

    620

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-01-16

  • Closed date

    2014-04-25

  • Last modified date

    2015-09-22

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    UM34262 UM34263

Modules/Macros

  • CBDMYCCB CBDMYDCC
    

Fix information

  • Fixed component name

    HCD/HCM

  • Fixed component ID

    568411219

Applicable component levels

  • R540 PSY UM34262

       UP14/04/30 P 1401

  • R620 PSY UM11071

       UP15/02/16 P 1501

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.



Document information

More support for: z/VM family

Software version: 620

Operating system(s): z/VM

Reference #: VM65485

Modified date: 22 September 2015


Translate this page: