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IJ48661: FILESET BACKUP WITH GLOBAL SNAPSHOT SELECTS BACKUP CANDIDATES INCORRECTLY

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APAR status

  • Closed as program error.

Error description

  • When mmbackup generates policy rule to select backup candidates,
it composites pathname list using snapshot name in snapshot
backup case.  In fileset backup, mmbackup treats snapshot as
fileset snapshot unconditionally even though the snapshot is
global snapshot. Hence, generated pathname is incorrect.

Local fix

  • use fileset snapshot for fileset backup

Problem summary

  • When mmbackup generates policy rule to select backup candidates,
it composites pathname list using snapshot name in snapshot
backup case.  In fileset backup, mmbackup treats snapshot as
fileset snapshot unconditionally even though the snapshot is
global snapshot. Hence, generated pathname is incorrect.

Problem conclusion

  • This problem is fixed in 5.1.2.14
To see all Spectrum Scale APARs and their respective
Fix solutions refer to page:
https://public.dhe.ibm.com/storage/spectrumscale/spectrum_scale_
apars.html

Benefits of the solution:
Single global snapshot can be used for multiple fileset
backups.

Work around:
use fileset snapshot for fileset backup

Problem trigger:
run fileset backup using global snapshot

Symptom:
Component Level Outage

Platforms affected:
all platforms that support mmbackup

Functional Area affected:
mmbackup

Customer Impact:
High Importance

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IJ48661
    • 

  • Reported component name
    SPEC SCALE STD
    • 

  • Reported component ID
    5737F33AP
    • 

  • Reported release
    512
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2023-09-21
    • 

  • Closed date
    2023-09-21
    • 

  • Last modified date
    2023-09-21
    • 





    

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

    • 

  • 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"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"512","Line of Business":{"code":"LOB26","label":"Storage"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            21 September 2023
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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