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MF66477 - LIC-DISK-OTHER-UNPRED HyperSwap secondary migration failure

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

LIC-DISK-OTHER-UNPRED HyperSwap secondary migration failure


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
NONE



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

This PTF is subject to the terms of the 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.

SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.





APAR Error Description / Circumvention

-----------------------------------------------
When migrating from one Hyperswap Secondary to another without
an IPL, there is a recommended sequence to follow.  Several
issues were found while testing other possible sequences and by
fixing these, we can improve the robustness of the design and
avoid inadvertent problems customers might hit if they don't
follow the recommendation.  For the most part, the problems
encountered put the hyperswap manager in a invalid state that
required an IPL for recovery.

CORRECTION FOR APAR MA47871 :
-----------------------------
Fixes now allow migration from one Hyperswap Secondary to
another without an IPL even when the recommended reconfiguration
sequence is not strictly followed.

CIRCUMVENTION FOR APAR MA47871 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS IS A DELAYED PTF TO BE APPLIED AT IPL TIME.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF65791      LIC-DISK-OTHER-INCORROUT-DISK-D/T2145 IASP disk unit is miss

Summary Information

System..............................i
Models..............................
Release.............................V7R4M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA47871
Superseded by:......................View fix details for PTF MF99304
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C9304740


IBM i Support

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Document Information

Modified date:
03 March 2021