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MF64569 - OSP-MSGMCH2815 DEADLOCK WHILE PROCESSING CONFIG CHANGE NOTIF

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

OSP-MSGMCH2815 DEADLOCK WHILE PROCESSING CONFIG CHANGE NOTIF


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
TR   5770999  V7R2M0    MF99108   00/00    0000



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
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for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

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REGARDING THE PTF.





APAR Error Description / Circumvention

-----------------------------------------------
System may appear hung or running slow if the storage box is
returning errors or not returning I/O requests.


CORRECTION FOR APAR MA46343 :
-----------------------------
We hit a deadlock trying to process a config change notification
at same time other I/O requests were not get responses from the
SVC and eventually timed out.  This caused several client I/O
requests to never get responded to which could cause jobs or the
entire system to hang.
A change will be made to insure we do not hang on the config
change notification, thus allowing us to process the time out
for the client I/O requests and retry them on another active
path.


CIRCUMVENTION FOR APAR MA46343 :
--------------------------------
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
--------------  ------------------------------------------------------------
     NONE

Summary Information

System..............................i
Models..............................
Release.............................V7R2M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA46343
Superseded by:......................View fix details for PTF MF99109
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C8249720


System i Support

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Document Information

Modified date:
07 February 2018