VM65485: BACKOUT DURING HARDWARE ACTIVATE CAN LEAD TO INCONSISTENT STATE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When a bad hardware response code is given for one of the change
  requests of an activate, a backout of the activate action is
  started. This might be unsuccessful.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: 1. z/VM HCD users performing bigger          *
  *                 dynamic activates                            *
  *                 2. z/VM HCD users working with IODFs         *
  *                 containing processors where the              *
  *                 processors support is not installed          *
  ****************************************************************
  * PROBLEM DESCRIPTION: In a backout situation a OC5 might      *
  *                      occur.                                  *
  ****************************************************************
  * RECOMMENDATION: This apar will ONLY address the inaccurate   *
  *                 message regarding the 2 byte link address.   *
  *                 If the processor support is not applied to   *
  *                 the machine future activates will still be   *
  *                 rejected. Apply the fix for this APAR AND    *
  *                 ensure that you have the correct processor   *
  *                 support code for your machine.               *
  ****************************************************************
  1. In a backout situation usually all hardware change request
  have are rolled back in reverse order. If more then about 1000
  requests had to be backed out, the backout action failed. A
  recovery action could not solve the problem and a POR is
  needed.
  2. When the processor support PTF is not installed, an
  ACTIVATE for this processor may be rejected with message
  CBDA863I, MSGCBDA863:"Activate request contains 2-byte link
  address(es) for CU(s) <cu-list>. This is not supported by the
  active processor or OS level."In other cases, the ACTIVATE may
  complete without error message, but changes involving new
  processor features are not applied to the HSA.
  

Problem conclusion

• The cause of the failed backout (addressing wrong storage) was
  fixed.
  

Temporary fix

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

Comments

APAR Information

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

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

  UM34262 UM34263

Modules/Macros

• CBDMYCCB CBDMYDCC
  

Fix information

• Fixed component name

  HCD/HCM

• Fixed component ID

  568411219

Applicable component levels

• R540 PSY UM34262

     UP14/04/30 P 1401

• R620 PSY UM11071

     UP15/02/16 P 1501

Fix is available

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