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MF55029 - LIC-MEDIA-TAPE Drive reservation not released

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

LIC-MEDIA-TAPE Drive reservation not released


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED      PTF/FIX  LEVEL

TYPE PROGRAM  REL  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.

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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

-----------------------------------------------
This problem occurs when a tape drive or media library is taken
off-line, or the configuration is changed, while the device is
varied on. The device driver encounters the change when the next
I/O operation is initiated, and the error recovery may
incorrectly report the condition to the operating system. If the
operation is a device reservation, this can result in the system
obtaining a reservation without recording it.

CORRECTION FOR APAR MA41788 :
-----------------------------
Apply this fix to correctly perform the error recovery when a
reset condition is detected by the device driver.

CIRCUMVENTION FOR APAR MA41788 :
--------------------------------
Vary the device off before changing the configuration or taking
off line. If the problem occurs, the reservation will be
released when the device is varied off.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
     NONE

Summary Information

System..............................i
Models..............................
Release.............................V7R1M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA41788
Superseded by:......................View fix details for PTF MF68574
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C2115710


IBM i Support

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Document Information

Modified date:
11 June 2021