IV64465: VIOS USING NPIV CAN CRASH SYSTEM APPLIES TO AIX 6100-08

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ***************************************************************
  * USERS AFFECTED:
  * Systems running the 6100-08 Technology Level with
  * devices.pciex.df1060e214103404.com between and
  * including the 6.1.8.15 and 6.1.8.19 levels.
  ***************************************************************
  * PROBLEM DESCRIPTION:
  * In a VIOS environment where you have client LPARs using
  NPIV,
  * Emulex FC/FCoe HBA/CNA 10Gb or higher Fibre Channel adapter,
  * and there are SAN/fabric issues for the NPIV-enabled paths,
  * the VIOS may crash if commands needed for error recovery or
  * the fabric login sequence times out.
  *
  * This has typically been seen when an NPIV client is doing
  * fabric operations such as fabric discovery, relogin after a
  * path failure, or dynamic tracking operations.
  *
  * During these operations some fields in the fscsi driver
  * structures may be erroneously cleared.  Later, when the
  * driver attempts to access these fields, it can result in a
  * system crash, hang, or other unexpected failure.
  ***************************************************************
  * RECOMMENDATION:
  * Install APAR IV64465.
  ***************************************************************
  

Local fix

Problem summary

• ***************************************************************
  * USERS AFFECTED:
  * Systems running the 6100-08 Technology Level with
  * devices.pciex.df1060e214103404.com between and
  * including the 6.1.8.15 and 6.1.8.19 levels.
  ***************************************************************
  * PROBLEM DESCRIPTION:
  * In a VIOS environment where you have client LPARs using
  NPIV,
  * Emulex FC/FCoe HBA/CNA 10Gb or higher Fibre Channel adapter,
  * and there are SAN/fabric issues for the NPIV-enabled paths,
  * the VIOS may crash if commands needed for error recovery or
  * the fabric login sequence times out.
  *
  * This has typically been seen when an NPIV client is doing
  * fabric operations such as fabric discovery, relogin after a
  * path failure, or dynamic tracking operations.
  *
  * During these operations some fields in the fscsi driver
  * structures may be erroneously cleared.  Later, when the
  * driver attempts to access these fields, it can result in a
  * system crash, hang, or other unexpected failure.
  ***************************************************************
  * RECOMMENDATION:
  * Install APAR IV64465.
  ***************************************************************
  

Problem conclusion

• Re-arranged the code to avoid the crash.
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

• 6100-08 - use AIX APAR IV64465
  6100-09 - use AIX APAR IV61759
  6100-09 - use AIX APAR IV61759
  7100-02 - use AIX APAR IV64283
  7100-03 - use AIX APAR IV61764
  7100-04 - use AIX APAR IV61771
  

APAR Information

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

  IV61759

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

Fix information

• Fixed component name

  AIX 610 STD EDI

• Fixed component ID

  5765G6200

Applicable component levels

• R610 PSY U867288

     UP15/01/18 I 1000

PTF to Fileset Mapping

• U867288 devices.pciex.df1060e214103404.com 6.1.8.20