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IJ04267: POSSIBLE HANG DURING POWERHA VERIFY & SYNC AND OTHER PROCESSES

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APAR status

  • Closed as program error.

Error description

  • **************************************************************
* USERS AFFECTED:
* Systems running the AIX 7200-01 Technology Level
* with bos.cluster.rte at or below the 7.2.1.3 level.
  **************************************************************
* ERROR DESCRIPTION:
* PowerHA Verify & Sync, clcmd, or other processes that
* utilize clcomd may hang.
* Large numbers of zombie processes for clcmd, clmgr, or
* similar commands may be seen if this is occurring.
*
* Restarting clcomd with stopsrc/startsrc will clean up zombie
* processes and allow clcomd to process new events again;
* however the issue could re-occur again later, until the fix
* is applied.
  **************************************************************
* RECOMMENDATION:
* Install APAR IJ04267.
* Prior to fix availability, an interim fix is available from
* either
* ftp://aix.software.ibm.com/aix/ifixes/ij04267/
* https://aix.software.ibm.com/aix/ifixes/ij04267/
* The ifix can be installed using Live Update (LU).
* If LU is not used, installation of the ifix requires a
* reboot.
  **************************************************************

Local fix

  • Stopping and restarting clcomd (stopsrc -s clcomd;
startsrc
-s clcomd) will allow clcomd to process new events, and
clean up existing zombie processes.  However, it will not
prevent further hangs.

Problem summary

  • Operations involving clcomd, such as PowerHA Verify & Sync and
clcmd commands may hang.

Problem conclusion

  • Remove unnecessary connection conflict logic that led to an
infinite loop of clcomd refreshes.

Temporary fix

  • *********
  * HIPER *
  *********

Comments

  • 



APAR Information




    

  • APAR number
    IJ04267
    • 

  • Reported component name
    AIX V7.2
    • 

  • Reported component ID
    5765CD200
    • 

  • Reported release
    720
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    YesHIPER
    • 

  • Submitted date
    2018-02-19
    • 

  • Closed date
    2018-03-05
    • 

  • Last modified date
    2019-01-23
    • 





    

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

    
IJ04266
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX V7.2
    • 

  • Fixed component ID
    5765CD200
    • 



Applicable component levels


    

  • R720  PSY  U878987
       UP19/01/23  I  1000  Ž
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            23 January 2019
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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