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IV98321: PROTOCOL DRIVER INCORRECTLY HANDLES CHANGE IN WWNN APPLIES TO AIX 7200-02

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APAR status

  • Closed as program error.

Error description

  • If the WWPN or WWNN of a target changes for some reason,
error recovery actions are enforced for the initiator by
an SCN event. While changes of a WWPN are correctly
processed, changes of a WWNN are not properly processed.
This may cause a loop in error recovery resulting in a
number of FCP_ERR14 errpt entries in the error log.

In some cases, cfgdev and/or cfgmgr, as well as
other commands may hang.

This defect does NOT apply to adapters which are
8 GB (or slower).  For those adapters, reference
APAR IV87358 (and its sysrouted APARs).

Local fix

  • Without the fix, the only option to recover from the
hanging commands is to reboot the host.

Problem summary

  • errpt entry similar to below entry can be seen LABEL:
FCP_ERR14 IDENTIFIER:     D5676F6F

Date/Time:       Thu Jun 29 17:28:42 2017 Sequence Number: 239
Machine Id:      00FA6C1F4C00 Node Id:         soamb4
Class:           H Type:            TEMP WPAR:
Global Resource Name:   fscsi4 Resource Class:  driver Resource
Type:   emfscsi Location:        U78C9.001.WZS0N1T-P1-C4-T1


Description ATTACHED SCSI TARGET DEVICE ERROR

        Recommended Actions PERFORM PROBLEM DETERMINATION
        PROCEDURES

Detail Data SENSE DATA 0000 0020 0000 00A2 0000 0000 0202 0301
1000 0090 FAC7 E51F 0000 0000 0017 3A00 0000 0000 0000 073A
0000 0000 0000 01E0 0000 0004 0000 0201 0200 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 2201 0002 AC01 B743 2FF7 0002 AC01 B743
0000 0000 0000 0000 0000 0000 0000 0000 0017 3100 0000 0000
0000 034F 0000 0000 0000 0003 0012 0300 0000 0000 0000 0002
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0018 0609 0000 0000 0000 0017 3100 0000 0000
0000 0000 0000 0000 2201 0002 AC01 B743 2FF7 0002 AC01 B743
0000 0000 0000 0000 0000 0000 0000 0000 7400 0000 8864 C004
0000 0008 7400 0000 0000 0000 0031 1700 BD14 250C 008A 0214
8000 0000 0074 0000 00EA 1000 0C00 FFFF 7400 0000 FC64 C004
0000 0008 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0074 7400 0000 003A 1700 0000 0180 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 5000 0000 0908 0050
8000 0800 00FF FFFF 0000 07D0 1000 0090 FAC7 E51F 2000 0090
FAC7 E51F 0000 0000 0000 0000 0000 0000 0001 0000 8000 0000
0000 0800 00FF 000C 0001 0000 8800 0000 0000 0800 00FF 0000
0001 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0200 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000

Problem conclusion

  • We added code to handle WWNN changes and issue relogin
in such situtaion.

Temporary fix

  • 



Comments


    

  • 6100-09 - use AIX APAR IJ00540
7100-04 - use AIX APAR IJ01803
7100-05 - use AIX APAR IV99525
7200-00 - use AIX APAR IJ01719
7200-01 - use AIX APAR IJ01413
7200-02 - use AIX APAR IV98321

    



APAR Information




    

  • APAR number
    IV98321
    • 

  • Reported component name
    AIX V7.2
    • 

  • Reported component ID
    5765CD200
    • 

  • Reported release
    720
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2017-07-20
    • 

  • Closed date
    2017-07-20
    • 

  • Last modified date
    2018-09-21
    • 





    

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

    
IV97797
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX V7.2
    • 

  • Fixed component ID
    5765CD200
    • 



Applicable component levels


    

  • R720  PSY  U876241
       UP18/03/06  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

              [{"Business Unit":{"code":"BU070","label":"IBM Infrastructure"},"Product":{"code":"SSVEF8","label":"AIX 7.2 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"720","Edition":"","Line of Business":{"code":"LOB68","label":"Power HW"}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SG11S","label":"AIX 7.2 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"720","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            10 September 2025
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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