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VM66051: ABENDSDV001 AFTER A UNPLANNED HYPERSWAP

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Customer experienced a SDV001 abend after a Unplanned Hyperswap
    was triggered and successfully completed.
    Normally, the 001 abend is a SOFT abend.
    But if encountered again while z/VM is in
    the middle of processing one of the same
    type, z/VM will treat the second as a HARD
    abend.  This prevented the controlling
    system of the Hyperswap from completing
    the RESUME phase.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of z/VM                            *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    ****************************************************************
    * RECOMMENDATION: APPLY PTF                                    *
    ****************************************************************
    A hard ABENDSDV001 was taken due to several logical subsystems
    failing PPRC related recovery following an unplanned Hyperswap.
    Recovery I/O to these devices failed due to the problem which
    prompted the Hyperswap.
    

Problem conclusion

  • ABENDSDV001
    
    The failing recovery is of the type that it could be deferred to
    a later time rather than taking the ABENDSDV001.  The code for
    the abend will be removed which will allow the associated
    recovery routine to always complete without the previous risk of
    causing an outage for the entire system.
    

Temporary fix

  • FOR RELEASE VM/ESA CP/ESA R540 :
    PREREQ: VM65825
    CO-REQ: NONE
    IF-REQ: NONE
    FOR RELEASE VM/ESA CP/ESA R630 :
    PREREQ: VM66018
    CO-REQ: NONE
    IF-REQ: NONE
    FOR RELEASE VM/ESA CP/ESA R640 :
    PREREQ: VM66018
    CO-REQ: NONE
    IF-REQ: NONE
    

Comments

APAR Information

  • APAR number

    VM66051

  • Reported component name

    VM CP

  • Reported component ID

    568411202

  • Reported release

    640

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-07-11

  • Closed date

    2017-07-21

  • Last modified date

    2018-12-14

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

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

    UM35173 UM35174 UM35175

Modules/Macros

  • HCPSDV
    

Fix information

  • Fixed component name

    VM CP

  • Fixed component ID

    568411202

Applicable component levels

  • R540 PSY UM35173

       UP17/07/25 I 1000 ¢

  • R630 PSY UM35174

       UP17/07/25 I 1000 ¢

  • R640 PSY UM35175

       UP17/11/24 P 1702 ¢

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.

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Document Information

Modified date:
14 December 2018