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IV00531: A SINGLE NFS4 LOCK REQUEST COULD EXHAUST SYSTEM FILOCK POOL APPLIES TO AIX 6100-07

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APAR status

  • Closed as program error.

Error description

  • When nfs4 client makes a blocking lock request and if the
lock is unavailable the nfs server would allocate a
filock
struct to sleep on that lock. Since the nfs client will
keep
retrying the request, the total pool of filock on the
system
could eventually be exhausted if the lock never becomes
available.

Local fix

  • 



Problem summary


    

  • System resources eventually get exhausted and the system
becomes unusable

    



Problem conclusion


    

  • Add in a check to prevent unnecessary flock structs from
being created

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV00531
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2011-05-17
    • 

  • Closed date
    2011-05-17
    • 

  • Last modified date
    2013-04-07
    • 






Fix information


    

  • Fixed component name
    AIX 610 STD EDI
    • 

  • Fixed component ID
    5765G6200
    • 



Applicable component levels


    

  • R610  PSY  U848374
       UP11/10/25  I  1000
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            07 April 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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