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IZ85135: DISK DRIVER REQUEST FC DRIVER USE LUN RESET OVER TARGET RESET. APPLIES TO AIX 6100-06

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APAR status

  • Closed as program error.

Error description

  • If commands are timing out to a Fibre Channel Storage device,
then Fibre Channel drivers may use Target Reset to bring
back the device.  Many newer storage devices support LUN Reset,
which would only affect that one LUN instead all LUN's under
the target.  Using Target Reset may result in more errors seen
on FC Fabric after command time outs.

Local fix

  • 



Problem summary


    

  • If commands are timing out to a Fibre Channel Storage device,
then Fibre Channel drivers may use Target Reset to bring
back the device.  Many newer storage devices support LUN Reset,
which would only affect that one LUN instead all LUN's under
the target.  Using Target Reset may result in more errors seen
on FC Fabric after command time outs.

    



Problem conclusion


    

  • Request FC Protocol Device Driver use LUN Reset for recovering
device instead of Target Reset.

    



Temporary fix


    

  • 



Comments


    

  • 6100-06 - use AIX APAR IZ85135
7100-00 - use AIX APAR IZ85502

    



APAR Information




    

  • APAR number
    IZ85135
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2010-09-16
    • 

  • Closed date
    2010-09-16
    • 

  • Last modified date
    2013-04-17
    • 





    

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

    • 

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

    
IZ85353 IZ85502 IZ85640
    

    • 



Fix information


    

  • Fixed component name
    AIX 610 STD EDI
    • 

  • Fixed component ID
    5765G6200
    • 



Applicable component levels


    

  • R610  PSY  U835912
       UP11/05/10  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            17 April 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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