OA61285: LINKINFO=REFRESH FORM OF THE D M,DEV SYSTEM COMMAND REPORTS ON OBSOLETE ENTRY LINK ADDRESS AFTER ENTRY SWITCH CHANGE

APAR status

• Closed as duplicate of another APAR.

Error description

• Definition of a channel path with at least one logical control
  unit and devices on the path was updated in the I/O
  configuration in the IODF with a new Entry Switch ID for a
  switch with a different switch address (Domain).
  The channel path was configured offline before executing dynamic
  I/O configuration, and then configured online afterwards.
  Output of the D M=DEV system command came up clean, with a new
  entry link address.
  Output of the D M=DEV,LINKINFO=REFRESH system command continued
  to point to an obsolete entry switch address (domain), thus
  contradicting the updated I/O configuration, as well as the D
  M=DEV output.
  Both entry link addresses came the same after IPL.
  
  ANALYSIS:
  The syslog confirms transition of the CHPID from ONLINE to
  OFFLINE, followed by the ACTIVATE command in HW and SW mode, and
  the CF CHP,ONLINE back
  
  Here is the D M=DEV output with a new entry link address:
    D M=DEV(3001)
    IEE174I 15.39.53 DISPLAY M 518
    DEVICE 03001   STATUS=ONLINE
    CHP                   64
    ENTRY LINK ADDRESS    0307     <-- New Domain 03, port 07
  
  Here is the D M=DEV,LINKINFO=REFRESH output
    D M=DEV(3001,(64)),LINKINFO=REFRESH
    IEE584I 15.40.33 DISPLAY M 203
    DEVICE 03001   STATUS=ONLINE
    Link Information: Last (Refresh)
    Description  Channel  Entry Port
    Identifier   01EC(64) 050B     <--Obsolete Domain 05, port 0B
  
  KNOWN IMPACT:
  No impact to the system, only a distraction
  
  VERIFICATION STEPS:
  Follow verification steps below if two types of the D M=DEV
  system command report on different entry link addresses:
  1. Check that the difference was reported after dynamic I/O
  configuration in HW and SW mode that changed an entry switch
  data in the definition of a channel path in question.
  2. Make sure that the channel path in question was configured
  OFFLINE prior to the ACTIVATE command, and then back ONLINE
  
  ADDITIONAL SYMPTOMS:
  no additional symptoms
  

Local fix

• BYPASS/CIRCUMVENTION:
  the issue is with reporting only, no impact to the system.
  IPL clears the difference
  
  RECOVERY ACTION:
  Nothing to recover. Proper reporting after IPL
  

Problem summary

Problem conclusion

Temporary fix

Comments

• The problem reported by APAR OA61285 is fixed at all supported
  releases (HBB77B0, HBB77C0 and HBB77D0) by New Function APAR
  OA59792.
  

APAR Information

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

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

Fix information

Applicable component levels