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IV60214: SCIOLSTART FAILS WITH EIO VS ESTALE IF DUP TARGET_INFO FOUND APPLIES TO AIX 7100-04

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APAR status

  • Closed as program error.

Error description

  • An SCIOLSTART of a target port may fail with EIO error if
there is already an existing target_info for that target.
This can happen if an SCIOLSTART is issued from an NPIV
client, after the target port has been moved to another
physical SAN switch port.

When the request to log in to the target port is received
on the VIOS, only the scsi_id value is provided.  This
scsi_id is the new location of the storage, versus the
old, and gets treated as a new device.  During device
initialization, the protocol driver discovers the storage
WWPN, and now finds an existing entry in its device
tables.

This causes a duplicate target_info structure, so the
SCIOLSTART is failed back to the vfchost adapter.
However, the error returned is an EIO versus an ESTALE,
so the EIO error is passed back up to the client,
instead of the vfchost adapter initiating recovery.

Local fix

  • 



Problem summary


    

  • IOs from the VIO client fails with EIO after changing the
storage port with no LUNs started from the port.

    



Problem conclusion


    

  • Code changed to avoid the issue.

    



Temporary fix


    

  • 



Comments


    

  • 6100-08 - use AIX APAR IV55341
6100-09 - use AIX APAR IV59967
6100-09 - use AIX APAR IV59967
7100-02 - use AIX APAR IV64209
7100-03 - use AIX APAR IV59963
7100-04 - use AIX APAR IV60214

    



APAR Information




    

  • APAR number
    IV60214
    • 

  • Reported component name
    AIX V7.1
    • 

  • Reported component ID
    5765H4000
    • 

  • Reported release
    710
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2014-05-07
    • 

  • Closed date
    2014-05-07
    • 

  • Last modified date
    2016-05-10
    • 





    

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

    
IV55341
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX V7.1
    • 

  • Fixed component ID
    5765H4000
    • 



Applicable component levels


    

  • R710  PSY  U861774
       UP15/11/23  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            10 May 2016
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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