PM80744: TPC-R INCORRECTLY PARSES PATH QUERY RESPONSE WHEN CCW ISSUED TO A TARGET

APAR status

• Closed as program error.

Error description

• It appears method buildPathsFromPathQueryResult incorrectly
  processes the target WWNN field when the query is issued to a
  target volume. The result of the incorrect processing, is that
  the source WWNN is stored in the target WWNN field in the
  database. Later, when paths are being established, this
  incorrect source WWNN is used on the establish paths command.
  This results in the 0FA1 error, since the source and target WWNN
  are the same.
  

Local fix

Problem summary

• The WWNN of the DS8000 source and target volumes were not
  correct (they were set to 0) when trying to create the PPRC
  paths to the DS8000s.
  Target WWNN selection is in error while issuing a start command
  while multiple paths exist to a single target LSS.
  

Problem conclusion

• Prior to this fix, the create PPRC path command may work
  depending on which LSS the path command was issued to. This
  really depends on the order of the LSS's within the path
  mapping. In example, the first LSS within the path mapping will
  get the WWNN of the source box. If the path happens to be a
  loopback path (within the same box), then the "correct" WWNN
  will be returned. Otherwise the LSS's will geturn 0 for the
  WWNN. The code will now choose the correct WWNN.
  

Temporary fix

Comments

APAR Information

• 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

  TPC FOR REPL Z/

• Fixed component ID

  5608TRMZ0

Applicable component levels

• R42B PSY

     UP

• R51B PSY

     UP