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VM65976: LGR SUPPORT FOR ESA/390 REMOVAL

A fix is available

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APAR status

  • Closed as program error.

Error description

  • This APAR provides infrastructure support for live guest
    relocation (LGR) in a single system image (SSI) cluster when a
    machine becomes available that includes ESA/390 removal.  It
    provides support needed for LGR compatibility with future
    machines.
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of live guest relocation for       *
    *                 machine upgrade purposes                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    ****************************************************************
    * RECOMMENDATION: APPLY PTF                                    *
    ****************************************************************
    The failing scenario is this.  A machine in the SSI cluster
    is about to be upgraded to newer model hardware.  To do this,
    it is expected that critical Linux virtual machines can first
    be live guest relocated (LGR) off of the member(s) whose
    machine is being upgraded.  After the hardware upgrade is
    complete, the Linux guest can be moved back to the member
    whose hardware was just upgraded.  Thus the upgrade is done
    without the need to stop critical applications.
    
    The problem is that sometimes the relocation back to the
    upgraded hardware will not work.  This relocation to the
    machine with the newer architecture should be an upgrade,
    and therefore the relocation should work.
    

Problem conclusion

  • The virtual architecture level code has been changed to fix the
    ARD comparison problem that causes failure of the relocation
    back to the original member.
    

Temporary fix

  • FOR RELEASE VM/ESA CP/ESA R620 :
    PREREQ: VM65846 VM65577
    CO-REQ: NONE
    IF-REQ: NONE
    FOR RELEASE VM/ESA CP/ESA R630 :
    PREREQ: VM65984 VM65846 VM65748 VM65733
    CO-REQ: NONE
    IF-REQ: NONE
    FOR RELEASE VM/ESA CP/ESA R640 :
    PREREQ: VM65984
    CO-REQ: NONE
    IF-REQ: NONE
    

Comments

APAR Information

  • APAR number

    VM65976

  • Reported component name

    VM CP

  • Reported component ID

    568411202

  • Reported release

    640

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-01-27

  • Closed date

    2017-03-01

  • Last modified date

    2017-08-25

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

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

    UM35061 UM35062 UM35063

Modules/Macros

  • HCPARD   HCPARDBK HCPWVS
    

Fix information

  • Fixed component name

    VM CP

  • Fixed component ID

    568411202

Applicable component levels

  • R620 PSY UM35061

       UP17/03/02 I 1000

  • R630 PSY UM35062

       UP17/08/25 P 1701

  • R640 PSY UM35063

       UP17/03/02 P 1701

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:
25 August 2017