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IZ81123: DF AND DU OUTPUTS ARE OUT OF SYNC WHEN J2 FS IS NFS EXPORTED APPLIES TO AIX 6100-06

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APAR status

  • Closed as program error.

Error description

  • When a J2 filesystem is NFS exported to clients, and an
I/O
operation (read/write) is happening when the file is
removed
then this leaves the filesystem space in use although the
disk blocks are not used. This results in "df" showing
more
space used while "du" reports not as many blocks in use.
The problem happens on AIX 6.1 only and not on AIX 5.3.

Local fix

  • Unmount and remount the J2 filesystem.

Problem summary

  • If a file on an NFS exported J2 file system is deleted on the
NFS server while the file is in use by a NFS client (ie, reads,
writes, etc), there exists a timing window where the disk
space the file is using may not be immediately released.

Problem conclusion

  • Do not add vnodes who's corrosponding inode has a link count of
zero to the vnode cache.

Temporary fix

  • 



Comments


    

  • 6100-03 - use AIX APAR IZ80510
6100-04 - use AIX APAR IZ80359
6100-05 - use AIX APAR IZ82857
6100-06 - use AIX APAR IZ80694
6100-06 - use AIX APAR IZ81123
7100-00 - use AIX APAR IZ82098

    



APAR Information




    

  • APAR number
    IZ81123
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2010-07-27
    • 

  • Closed date
    2010-07-27
    • 

  • Last modified date
    2013-04-16
    • 





    

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

    
IZ80359
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX 610 STD EDI
    • 

  • Fixed component ID
    5765G6200
    • 



Applicable component levels


    

  • R610  PSY  U833973
       UP11/05/13  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            16 April 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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