PI26702: GDPS GLOBAL MIRROR PERFORMANCE INVALID SMF RECORD105 SUBTYPE2

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• GDPS SMF RECORD 105 SUBTYPE 2 LSS SECTION reports null value
  in fields SMF105LTV,SMF105LPV,SMF105LSV,SMF105LUV,SMF105LCV,
  SMF105LJV,SMF105LFV when number of volumes in LSS is 256.
  

Local fix

• The problem occurs only when the LSS volume count is 256.
  No local or temporary fix except removing one volume from
  the GDPS global mirror configuration.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: GDPS/GM MGM SMF record 105                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: GDPS SMF RECORD 105 SUBTYPE 2 LSS       *
  *                      SECTION reports null value when number  *
  *                      of volume mirrored in LSS is 256.       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  GDPS SMF RECORD 105 SUBTYPE 2 LSS SECTION SMF105LTV, SMF105LOV,
  SMF105LPV,SMF105LSV,SMF105LUV,SMF105LCV, SMF105LJV, SMF105LFV
  are null when number of volumes in Global Mirror LSS is 256.
  These fields are one byte length, '00'x to 'FF'x implies
  decimal value of 256 LSS is not supported.
  For downward compatibility reason, these SMF subfields content
  have to remain unchanged and a new set of fields are required
  to support such GDPS/GM MGM configuration setting.
  The problem does not occur for installation with less than 256
  volumes defined per LSS.
  

Problem conclusion

• This PTF changes macro GEOMSMF, which maps the SMF type 105
  record that contains information from the Global Mirror monitor
  The macro can be found in the SGDPSAMP macro library.
  The changes affect record subtype 2.
  If you have locally written programs that use this macro,
  they will need to be modified accordingly in order to function
  correctly.
  Similarly, if you have a vendor-supplied program that processes
  SMF type 105 subtype 2 records, you will need to obtain an
  updated version of the program to handle the modified
  record format.
  The flag byte field SMF105DFL provides the new record trigger
  information. When this flag is set to x'01', LSS volumes
  count is stored in new two bytes fields SMF105LxxM.
  The CSV formatter utility has been changed to support the new
  SMF 105 record subtype 2.
  

Temporary fix

Comments

APAR Information

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

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

  UI23593 UI23594 UI23595 UI23596 UI23597 UI23598

Modules/Macros

•    GEOMSMF  VPCMSMFF
  

Fix information

• Fixed component name

  GDPS-GEO DISP P

• Fixed component ID

  694235B00

Applicable component levels

• R3AG PSY UI23593

     UP14/12/06 P F412

• R3AH PSY UI23594

     UP14/12/06 P F412

• R3BG PSY UI23595

     UP14/12/06 P F412

• R3BH PSY UI23596

     UP14/12/06 P F412

• R39G PSY UI23597

     UP14/12/06 P F412

• R39H PSY UI23598

     UP14/12/06 P F412

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.