PI18544: NEW FUNCTION: ADDITIONAL GDPS CHECKING FOR HYPERSWAP READINESS

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• Client requested additional checking for a special condition
  that can arise in MGM if PPRC relationships are manipulated
  outside of GDPS control. If incremental resynchronization change
  recording is inadvertently enabled on the PPRC secondary device,
  the condition can cause a HyperSwap failure.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: GDPS/PPRC GDPS/HM                            *
  *                 keywords: GDPSPPRC/K GDPSPPRCHM/K HYPERSWP/K *
  ****************************************************************
  * PROBLEM DESCRIPTION: New function - Addtional checking for   *
  *                      HyperSwap readiness                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

Temporary fix

Comments

• PRODUCT ENHANCEMENT
  This APAR provides additional checking for HyperSwap readiness
  in planned HyperSwap and Monitor2 processing. If any PPRC
  secondary device has Incremental Resynchronization (IR) change
  recording active, planned HyperSwap will be aborted and Monitor2
  will disable HyperSwap and unprepare all systems.
  PRODUCT DEPENDENCY
  In order for this fix to be fully effective on systems with
  z/OS release 1.13 or 2.1, the fix for IOS APAR OA46683 must
  be installed. PTFs UA76441 and UA76442 are available for the
  two releases, respectively.
  DOCUMENTATION UPDATES
  Revision to GDPS/PPRC Installation and Customization Guide
  (ZG24-6703) and GDPS/PPRC HyperSwap Manager Installation and
  Customization Guide (ZG24-6746): In Appendix E, 'GDPS Monitors',
  add the following to the list of actions performed by Monitor2:
   "Check that Incremental Resynchronization (IR) change recording
    is not enabled for any PPRC secondary device.  Note that
    mirroring status will not be set to OK and HyperSwap will be
    disabled if an IR-enabled PPRC secondary is found, even if all
    pairs are duplex."
  Revision to GDPS Messages and Codes (ZG24-1756): Add the follow-
  ing to the <reason-text> list in the GEO551I explanation.
   "INCRES(YES) found on secondary disk"
  

APAR Information

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

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

  OA45287 UI34340 UI34341 UI34342 UI34343 UI34344 UI34345

Modules/Macros

• GEO55    VPCEDASD VPCEHSMO
  

Fix information

• Fixed component name

  GDPS-GEO DISP P

• Fixed component ID

  694235B00

Applicable component levels

• R3BA PSY UI34342

     UP16/01/12 P F601

• R3BH PSY UI34343

     UP16/01/12 P F601

• R3B0 PSY UI34340

     UP16/01/12 P F601

• R3CA PSY UI34344

     UP16/01/12 P F601

• R3CH PSY UI34345

     UP16/01/12 P F601

• R3C0 PSY UI34341

     UP16/01/12 P F601

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.