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IZ86900: BLOCKING LOCK REQUESTS GET BLOCKED FOR 60SEC WITH ENOUGH LOAD APPLIES TO AIX 6100-06

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APAR status

  • Closed as program error.

Error description

  • When several blocking lock requests are made from the
same
process and the same client in parallel (such as in a
multi-
threaded process environment), depending on the timing,
it
is possible that some lock requests receive a
"NLM4_BLOCKED"
response (even though the lock could have been granted)
and
have to wait for up to 60 sec before a retry is
attempted.

Local fix

  • None. The lock requests will be retried after 60 sec
automatically
by the client side code.

Problem summary

  • From an NFS client, when several blocking file lock requests
are made from the same process and the same client in parallel
(such as in a multi-threaded process environment), depending
on the timing, it is possible that some lock requests receive
a "NLM4_BLOCKED" response (even though the lock could have
been granted) and have to wait for up to 60 sec before a
retry is attempted.

Problem conclusion

  • Modified NFS server code to properly handle the blocking file
lock requests.

Temporary fix

  • 



Comments


    

  • 5300-10 - use AIX APAR IZ91017
5300-11 - use AIX APAR IZ91093
5300-12 - use AIX APAR IZ91096
6100-03 - use AIX APAR IZ93967
6100-04 - use AIX APAR IZ93968
6100-05 - use AIX APAR IZ93361
6100-06 - use AIX APAR IZ93081
6100-06 - use AIX APAR IZ86900
7100-00 - use AIX APAR IZ87075

    



APAR Information




    

  • APAR number
    IZ86900
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2010-10-19
    • 

  • Closed date
    2010-10-19
    • 

  • Last modified date
    2013-04-17
    • 





    

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

    
IZ70698
    

    • 

  • 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  U835918
       UP11/05/10  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            17 April 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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