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MF64570 - OSP-MSGMCH2815 DEADLOCK WHILE PROCESSING CONFIG CHANGE NOTIF

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  V7R3M0    MF99204   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
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.

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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
--------------  ------------------------------------------------------------
   MF64564      LIC-DISK-STG-PERFM Implement Write Same with Unmap on flashs

Summary Information

System.............................. i
Models..............................
Release............................. V7R3M0
Licensed Program............... 5770999
APAR Fixed.......................... View details for APAR MA46343
Superseded by:...................... View fix details for PTF MF99206
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C8242730


System i Support

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Document information

More support for: i family

Software version: V7R3M0

Operating system(s): OS/400

Reference #: MF64570

Modified date: 23 February 2018