VM65486: PEVM65416 ABENDXLK001 AFTER DYNAMIC I/O CHANGE CRW 14/08/12 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABENDXLK001 occurs after a dynamic I/O CRW event that deleted/
  added a device at the same device number.  The virtual
  configuration associated with the old device definition was
  not cleaned up and caused an ABENDXLK001 during logoff
  processing.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All zVM users                                *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION: APPLY PTF                                    *
  ****************************************************************
  PROBLEM 1
  ------------
  ABENDXLK001 occurs after a dynamic I/O CRW event that deleted/
  added a device at the same device number.  The virtual
  configuration associated with the old device definition was
  not cleaned up and caused an ABENDXLK001 during logoff
  processing.  ABENDPRG006 and ABENDHTT001 have also been seen
  in this type of scenario.
  ------------
  PROBLEM 2
  ------------
  After CRW events that deleted/added a dedicated dump device
  at the same device number, the dump device is left in the
  DRAINed state and is unusable.
  ------------
  PROBLEM 3
  ------------
  After a CRW event that deleted HyperPav alias volumes and
  caused an unplanned hyperswap of the the HyperPAV base
  volumes in the same pool, HyperPAV alias device were not
  found attached to the system, ready for use on the destination
  system of the Hyperswap.
  

Problem conclusion

• ---------------
  SOLUTION 1
  ---------------
  PEVM65416 ABENDXLK001 ABENDPRG006 ABENDHTT001
  Processing that handles a CRW which indicates that a device
  has been added to the configuration (HCPRFCDC) was modified
  when it finds an existing RDEV for the device.  Currently,
  the RDEV is quiesced and deleted in HCPRFCDC (possibly
  orphaning an associated virtual configuration), so that a new
  RDEV can be created and used for the new instance of the device.
  Instead, HCPRFCDC will now remove the existing RDEV from the
  RDEV radix tree.  This still allows the new RDEV to be created,
  added to the RDEV radix tree and used for the new instance of
  the device, but also allows subsequent processing in HCPRFCDL
  to find and delete any virtual configuration via the
  existing RDEV address.  After the virtual configuration
  is deleted, the existing RDEV will be deleted.  This will
  prevent the ABENDXLK001 and ABENDPRG006 and ABENDHTT001 from
  occurring.
  ---------------
  SOLUTION 2
  ---------------
  HCPRFCAD (post-processing of a CRW that adds a device to
  the configuration) was modified to reset the RDEVDRAN
  bit.  This will allow a dump device that was deleted/added
  to the configuration via CRW to be usable again.
  ---------------
  SOLUTION 3
  ---------------
  HCPRFCDC was modified to check the associated base devices
  of alias devices being deleted to see if they are quieseced
  or enabled for Hyperswap.  If they are, then the alias devices'
  RDEVs are left intact so that hyperswap processing can correctly
  determine the need for alias devices on the destination system.
  

Temporary fix

• *********
  * HIPER *
  *********
  FOR RELEASE VM/ESA CP/ESA R540 :
  PREREQ: VM65416 VM65232 VM65105 VM64970 VM64683 VM65287
  CO-REQ: NONE
  IF-REQ: NONE
  FOR RELEASE VM/ESA CP/ESA R620 :
  PREREQ: VM65416 VM65232 VM65105 VM65287
  CO-REQ: NONE
  IF-REQ: NONE
  FOR RELEASE VM/ESA CP/ESA R630 :
  PREREQ: VM65416 VM65322
  CO-REQ: NONE
  IF-REQ: NONE
  

Comments

APAR Information

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

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

  UM34430 UM34431

Modules/Macros

• HCPDTS   HCPRDEV  HCPRFC   HCPZDR
  

Fix information

• Fixed component name

  VM CP

• Fixed component ID

  568411202

Applicable component levels

• R540 PSY UM34429

     UP14/09/22 P 1401 ®

• R620 PSY UM34430

     UP14/09/22 P 1501 ®

• R630 PSY UM34431

     UP14/09/22 P 1501 ®

Fix is available

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