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IJ30461: MMBACKUP MIGHT UNNECESSARILY BACK UP FILES AFTER FAILURE

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APAR status

  • Closed as program error.

Error description

  • Due to a logic error in mmbackup recovery logic, after a
mmbackup failure another mmbackup invocation might
 nnecessarily back up file data (using "dsmc selective")
when only meta information is in need of backup
(using "dsmc incremental").

One might notice file data being backed up unnecessary
after a mmbackup failure.

Local fix

  • 



Problem summary


    

  • Mmbackup could backup files unnecessary after failure

    



Problem conclusion


    

  • Benefits of the solution:
After a mmbackup failure, the metadata
update candidate objects will correctly
remain as the metadata update candidates.

Work around:
None

Problem trigger:
mmbackup failing during Scale Protect
client and server backup phase

Symptom:
Performance Impact/Degradation

Platforms affected:
All

Functional Area affected:
mmbackup

Customer Impact:
High Importance

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IJ30461
    • 

  • Reported component name
    SPEC SCALE STD
    • 

  • Reported component ID
    5737F33AP
    • 

  • Reported release
    505
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2021-01-22
    • 

  • Closed date
    2021-01-22
    • 

  • Last modified date
    2021-01-22
    • 





    

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

    
IJ30139
    

    • 

  • 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":"505","Line of Business":{"code":"LOB26","label":"Storage"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            23 January 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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