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IV59492: LPM TO P7+ OR P8 FOLLOWED BY DLPAR CAN CRASH THE LPAR APPLIES TO AIX 6100-09

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APAR status

  • Closed as program error.

Error description

  • ***************************************************************
* USERS AFFECTED:
* Systems running the AIX 6100-09 Technology Level
* with devices.chrp.base.rte below the 6.1.9.45 level.
***************************************************************
* PROBLEM DESCRIPTION:
* LPAR Migration (LPM) from p6 or p7 systems to p7+ or p8
* systems will add some information about new accelerators
* to the IPL Control Block (IPLCB).
* After LPM, some DLPAR functions, like adding CPU, can
* overwrite the new information in the IPLCB.
* After LPM and DLPAR operations, various parts of AIX may
* access and use the bad data in the IPLCB in ways that result
* in the LPAR crashing.
***************************************************************
* RECOMMENDATION:
* Install APAR IV59492.
* Prior to fix availability, an interim fix is available from
* either
* ftp://aix.software.ibm.com/aix/ifixes/iv59492/
* https://aix.software.ibm.com/aix/ifixes/iv59492/
* This ifix can be installed before or after LPM to prevent
* the problem and does not require a reboot.
***************************************************************

Local fix

  • 



Problem summary


    

  • ***************************************************************
* USERS AFFECTED:
* Systems running the AIX 6100-09 Technology Level
* with devices.chrp.base.rte below the 6.1.9.45 level.
***************************************************************
* PROBLEM DESCRIPTION:
* LPAR Migration (LPM) from p6 or p7 systems to p7+ or p8
* systems will add some information about new accelerators
* to the IPL Control Block (IPLCB).
* After LPM, some DLPAR functions, like adding CPU, can
* overwrite the new information in the IPLCB.
* After LPM and DLPAR operations, various parts of AIX may
* access and use the bad data in the IPLCB in ways that result
* in the LPAR crashing.
***************************************************************
* RECOMMENDATION:
* Install APAR IV59492.
* Prior to fix availability, an interim fix is available from
* either
* ftp://aix.software.ibm.com/aix/ifixes/iv59492/
* https://aix.software.ibm.com/aix/ifixes/iv59492/
* This ifix can be installed before or after LPM to prevent
* the problem and does not require a reboot.
***************************************************************

    



Problem conclusion


    

  • Modify IPLCB update code after LPM.

    



Temporary fix


    

  • *********
* HIPER *
*********

    



Comments


    

  • 6100-08 - use AIX APAR IV71109
6100-09 - use AIX APAR IV59492
7100-02 - use AIX APAR IV71110
7100-03 - use AIX APAR IV67876

    



APAR Information




    

  • APAR number
    IV59492
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    YesHIPER
    • 

  • Submitted date
    2014-04-18
    • 

  • Closed date
    2014-04-18
    • 

  • Last modified date
    2016-05-10
    • 






Fix information


    

  • Fixed component name
    AIX 610 STD EDI
    • 

  • Fixed component ID
    5765G6200
    • 



Applicable component levels


    

  • R610  PSY  U861366
       UP15/11/22  I  1000  Ž
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            10 May 2016
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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