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IJ04279: POSSIBLE HANG DURING POWERHA VERIFY & SYNC AND OTHER PROCESSES APPLIES TO AIX 6100-09

 

APAR status

  • Closed as program error.

Error description

  • **************************************************************
* USERS AFFECTED:
* Systems running the AIX 6100-09 Technology Level
* with bos.cluster.rte below the 6.1.9.400 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 IJ04279.
* Prior to fix availability, an interim fix is available from
* either
* ftp://aix.software.ibm.com/aix/ifixes/ij04279/
* https://aix.software.ibm.com/aix/ifixes/ij04279/
* Installation of the ifix does not require 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
    IJ04279
    • 

  • Reported component name
    AIX 6.1 EXT SUP
    • 

  • Reported component ID
    5765G6299
    • 

  • Reported release
    61E
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    YesHIPER
    • 

  • Submitted date
    2018-02-20
    • 

  • Closed date
    2018-03-05
    • 

  • Last modified date
    2018-09-21
    • 





    

  • 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 6.1 EXT SUP
    • 

  • Fixed component ID
    5765G6299
    • 



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSLLZP","label":"AIX Standard Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"61E","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11Q","label":"AIX 6.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"61E","Edition":"","Line of Business":{"code":"","label":""}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            21 September 2018
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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