PJ40793: CTL-I064C01 IN CPAG DUE TO PERSISTENT DASD RESET NOTIFICATION UNIT CHECKS.

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APAR status

  • Closed as program error.

Error description

  • See Problem Summary.
    

Local fix

  • na
    

Problem summary

  • APAR NUMBER:  PJ40793
    PRODUCT:  z/TPF
    FUNCTIONAL AREA:  DASD
    SHIPPED IN PUT:  10
    
    ABSTRACT:
    CTL-I064C01 in cpag.asm due to persistent DASD reset
    notification unit checks under VM.
    
    PACKAGE CONTENTS:
    Source Segments:
    (C) base/cp/cjix.cpy
    
    Object Only Binaries:
    None.
    
    Configuration Independent Binaries:
    None.
    
    Support Files:
    None.
    
    OTHER BINARIES TO BUILD: YES
    (C) <sys>/obj/ccsons.o
    (C) <sys>/load/CPS0.so
    
    COMMENTS:
    Customer running TPF guest under VM performed a FICON director
    maintenance activity that took some CHPIDs offline. This caused
    persistent reset notification unit checks. The recovery at
    CJIXCD04 in CCSONS created multiple CPAG ECBs which ran the
    system out of common blocks while doing FDCTC CCW translation.
    Reset notification recovery should be limited to fewer retries
    and the CXFRC to CPAG should be bypassed if the failing I/O was
    initiated by CPAG.
    

Problem conclusion

  • SOLUTION:
    Copy segment cjix.cpy of ccsons.asm has been modified to
    perform 16 reset notification retries rather than 255. The
    CXFRC to CPAG will be bypassed if reset notification is
    presented to a CPAG I/O request.
    
    COREQS: NO
    None.
    
    MIGRATION CONSIDERATIONS: NO
    None.
    
    BUILD COMMANDS AND INSTRUCTIONS: YES
    #maketpf commands for linux
    maketpf -f CPS0 ccsons.o
    maketpf CPS0 link
    
    UPDATED INFORMATION UNITS: NO
    None.
    
    See your IBM representative if you need additional information.
    
    DOWNLOAD INSTRUCTIONS:
    http://www.ibm.com/software/htp/tpf/maint/maintztpf.html
    
    APAR URL:
    http://www.ibm.com/software/htp/tpf/ztpfmaint/put10/PJ40793.htm
    

Temporary fix

Comments

APAR Information

  • APAR number

    PJ40793

  • Reported component name

    Z/TPF

  • Reported component ID

    5748T1501

  • Reported release

    110

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-12-13

  • Closed date

    2013-01-04

  • Last modified date

    2013-01-04

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

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

Fix information

  • Fixed component name

    Z/TPF

  • Fixed component ID

    5748T1501

Applicable component levels

  • R110 PSY

       UP



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Document information


More support for:

TPF
z/TPF

Software version:

110

Reference #:

PJ40793

Modified date:

2013-01-04

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