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IJ29918: NODE CRASH IF TREMENDOUS PARALLEL ACCESS TO A FILE USING NFS

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APAR status

  • Closed as program error.

Error description

  • Rare crash of a single node under very specific to the
environment conditions.

nfsd4_open+0x562/0x850 [nfsd]
nfsd4_proc_compound+0x3dd/0x780 [nfsd]
nfsd_dispatch+0xe0/0x290 [nfsd]
svc_process_common+0x400/0x7d0 [sunrpc]
svc_process+0xf3/0x110 [sunrpc]
nfsd+0xdf/0x150 [nfsd]
? nfsd_destroy+0x80/0x80 [nfsd]
kthread+0xd1/0xe0
? insert_kthread_work+0x40/0x40
ret_from_fork_nospec_begin+0x21/0x21


Reported In: Spectrum Scale 5.0.4.4

Local fix

  • 



Problem summary


    

  • NODE CRASH IF TREMENDOUS PARALLEL
ACCESS TO FILE WITH NFS

    



Problem conclusion


    

  • Benefits of the solution, in customer terms:
Avoid node crash

Work around:
No

Problem trigger:
File operation lease is broken

Symptom:
Abend/Crash

Platforms affected:
All Linux

Functional Area affected:
kNFS

Customer Impact:
High Importance

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IJ29918
    • 

  • Reported component name
    SPEC SCALE STD
    • 

  • Reported component ID
    5737F33AP
    • 

  • Reported release
    510
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2020-12-14
    • 

  • Closed date
    2020-12-14
    • 

  • Last modified date
    2020-12-14
    • 





    

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

    
IJ29312
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    SPEC SCALE STD
    • 

  • Fixed component ID
    5737F33AP
    • 



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"STXKQY","label":"IBM Spectrum Scale"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"510","Line of Business":{"code":"LOB26","label":"Storage"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            15 December 2020
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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