IZ81607: IMPROVE DISK ERROR LOGGING ON MPIO PATH SELECTION FAILURE. APPLIES TO AIX 5300-12

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Disk I/O failed to MPIO disk due to the path control
  module failing path selection.  In some rare cases there is
  no PERM disk error log in the AIX error log associated with
  this I/O failure.
  

Local fix

Problem summary

• Disk I/O failed to MPIO disk due to the path control
  module failing path selection.  In some rare cases there is
  no PERM disk error log in the AIX error log associated with
  this I/O failure.
  

Problem conclusion

• It is expected the PCM will log an error log associated with
  the path selection failure, or path failures.  The disk
  device driver will be improved to always build an error
  log on all path selection errors even for read/write
  I/O.
  

Temporary fix

Comments

• 5300-10 - use AIX APAR IZ82509
  5300-11 - use AIX APAR IZ82087
  5300-12 - use AIX APAR IZ81607
  6100-03 - use AIX APAR IZ79534
  6100-04 - use AIX APAR IZ78852
  6100-05 - use AIX APAR IZ78785
  6100-06 - use AIX APAR IZ77673
  6100-06 - use AIX APAR IZ77760
  7100-00 - use AIX APAR IZ81869
  

APAR Information

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

  IZ77673

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

Fix information

• Fixed component name

  AIX 5.3

• Fixed component ID

  5765G0300

Applicable component levels

• R530 PSY U830341

     UP10/09/20 I 1000

PTF to Fileset Mapping

• U830341 devices.fcp.disk.rte 5.3.12.2