IBM Support

IJ29213: AFM: READ A FILE MIGHT RETURN INCORRECT DATA WHEN IT IS EVICTED

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APAR status

  • Closed as program error.

Error description

  • Error Description:
When read a file, and at the same the file is evicted by
command "mmafmctl evict" or auto eviction, incorrect data
might be returned.

Reported in:
Spectrum Scale 5.0.4.4 on RHEL7

Known Impact:
Incorrect data read out.

Verification steps:

Recovery action:
Do not evict a file that is in-used.
Stop auto eviction until upgraded.

Local fix

  • N/A

Problem summary

  • While reading the file, the file can
be evicted and its
captured checksum shows
inconsistency for this opened file.

Problem conclusion

  •  Benefits of the solution:
No more checksum  inconsistencies

Work around: NO

Problem trigger:
Read/write file and run manual evict
on the same file.

Symptom:
File gets evicted even though the
file is opened for operations.

Platforms affected:
All Linux OS environments
Functional Area affected: AFM
Customer Impact: low

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IJ29213
    • 

  • 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
    2020-11-10
    • 

  • Closed date
    2020-11-10
    • 

  • Last modified date
    2020-11-10
    • 





    

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

    
IJ29112
    

    • 

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

    
IJ29719
    

    • 



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:
            

            04 December 2020
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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