VM66866: Z/VM 7.4 CP FIX PACK - FEATURE 02 FIX 02

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• This is Feature Pack 02 Fix Pack 02 for z/VM 7.4.
  
  It contains fixes for the following problems:
  1. TDMF receives RC 2 on Diagnose x98 Lock request
  2. FLASHCOPY error on compression-enabled target drive
  3. Transfer of spool file corrupts the originator ID
  4. System failure in module HCPNVM tracing PCIe event
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of diagnose x'98' by VM TDMF,          *
  *                 rdrlist/spool, flashcopy, and PCIe EDEVICE.  *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION: APPLY PTF                                    *
  ****************************************************************
  TDMF receives RC 2 on Diagnose x98 Lock Request
  -----------------------------------------------
  Diag x98 Block Function x10, Sub-Function Lock x00 request
  results in RC 2 when VM66824 is applied due to changes in
  instruction simulation interfaces. This results in VM
  TDMF initialization errors after applying the z17
  compatibility APAR VM66824.
  
  Transfer of spool file corrupts the originator ID
  -------------------------------------------------
  Transferring a spool file to an ID other than your own may cause
  rdrlist on the target to display a corrupted originator ID when
  attempting to display the transferred spool file.  The problem
  only occurs if the file was sent to a system different than the
  originating system, for example over RSCS via SENDFILE.
  
  FLASHCOPY error on compression-enabled target drive
  ---------------------------------------------------
  Enables command processing for compression-enabled FLASHCOPY
  drives.
  
  System failure in module HCPNVM tracing PCIe event
  --------------------------------------------------
  When using CP TRACE to trace a PCIe event, it's possible the
  associated I/O request could complete before the initiating code
  path completes its work, which includes constructing a trace
  entry. This could result in different system failures.
  

Problem conclusion

• TDMF receives RC 2 on Diagnose x98 Lock request
  -----------------------------------------------
  Diag x'98' input to instruction simulation interfaces was
  updated to resolve the RC2 condition on diag x'98' with
  block function x'10', subfunction x'00'.
  
  Transfer of spool file corrupts the originator ID
  -------------------------------------------------
  The problem is in the code that transmits the transfer
  notification to other members of the SSI that have an interest
  in this file; that is, members that have a copy of this file's
  SPFBK. Which members need to be notified are indicated by the
  SPFBRDBT bit map field. The SPFBRDBT field is in the in-memory
  copy of the SPFBK but not in checkpointed copy of the SPFBK in
  the SPMBK. The DELFILE subroutine requires the SPFBRDBT field to
  be in the SPFBK passed in as input. The code in HCPXTPCK passes
  in the checkpointed copy of the SPFBK which is too short to hold
  SPFBRDBT.
  
  The input to DELFILE is changed to use a SAVEWRK field to pass
  in the broadcast bits. Both the checkpoint code and delete-file
  code call the DELFILE subroutine to delete any copies of the
  file on non-originating members. The complication is that
  DELFILE is called from two different entry points so the fix
  must change the input in both HCPXTPCK (the failing entry point)
  and HCPXTPDL (delete-file processing). The fix passes the
  broadcast bits (SPFBRDBT) to the DELFILE routine in a separate
  field rather than in the SPFBK because the SPFBK is too short to
  contain that field. Instead, the fix passes the broadcast bits
  in a SAVEWRK field. This avoids the overlay of the SPMSRCUS
  field in the SPMBK copy of the SPFBK.
  
  FLASHCOPY error on compression-enabled target drive
  ---------------------------------------------------
  A new bit was defined and set in the Flashcopy VDEV and
  Flashcopy Establish command processing. This adds support for
  new DS8Ks which are compression-enabled and is ignored by the
  hardware when unsupported.
  
  System failure in module HCPNVM tracing PCIe event
  --------------------------------------------------
  Once a PCIe request is initiated, the associated save area block
  can no longer be referenced by the initiating code path. This is
  because the associated request could complete before the
  initiating code path completes its work, which includes
  constructing a trace entry. The code introduced by APAR VM66665
  referred to the save area to obtain the address of the EDEV bloc
  for the EDEVICE associated with the PCIe request. In the event
  that the I/O completed before the trace entry was constructed,
  the EDEV address in the save area could be reused for another
  purpose, leading to, in some cases, a SIT002 ABEND.
  

Temporary fix

• FOR RELEASE VM/ESA CP/ESA R740 :
  PREREQ: VM66854 VM66796 VM66844
  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:

  UM90549

Modules/Macros

• CBDMCONF CBDMNDSP CBDMOD   EEQINSTM HCPCPE   HCPDGR   HCPNFC
  HCPNVM   HCPVMS   HCPXTP   7VMCPR40
  

Fix information

• Fixed component name

  VM CP CP

• Fixed component ID

  568411202

Applicable component levels

• R740 PSY UM90549

     UP25/08/20 P 2502 ¢

Fix is available

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