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IJ52998: DEFRAGFS -F ON A LARGE JFS2 FILESYSTEM MAY CAUSE CORRUPTION APPLIES TO AIX 7300-04

 

APAR status

  • Closed as program error.

Error description

  • ?defragfs -f? on a very large jfs2 filesystem may cause
corruption. The command will complete but may eave the
filesystem degraded so that no file can be created or
updated. In order to make the filesystem mountable
again, fsck has to be run fix corruption.

Local fix

  • fsck can be run to correct corruption, but defragfs
does not do a complete job of defragging filesystem

Problem summary

  • jfs2 becomes readonly

Problem conclusion

  • use int64 as data type to store extent offsets instead
of int32

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IJ52998
    • 

  • Reported component name
    AIX V7.3
    • 

  • Reported component ID
    5765CD300
    • 

  • Reported release
    730
    • 

  • Status
    CLOSED  PER
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2024-11-05
    • 

  • Closed date
    2024-11-05
    • 

  • Last modified date
    2025-12-10
    • 





    

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

    
IJ51416
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX V7.3
    • 

  • Fixed component ID
    5765CD300
    • 



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SG11T","label":"AIX 7.3 HIPERS- APARs and Fixes"},"Platform":[{"code":"PF053","label":"Power Systems"}],"Version":"730","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            10 December 2025
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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