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MF53798 - OSP-INCORROUT Add IDE dasdensureclear command

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

OSP-INCORROUT Add IDE dasdensureclear command


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED      PTF/FIX  LEVEL

TYPE PROGRAM  REL  NUMBER   MIN/MAX  OPTION
---- -------- ---  -------  -------  ------
TR   5770999  710  MF99003   00/00    0000



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-------
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APAR Error Description / Circumvention

-----------------------------------------------
It is faster to clear SAS disk using the Format command instead
of the Write Same command.  Therefore, ensure clear changed to
issue the Format command for SAS drives in V7R1M3.  The users of
IDE desire to still have the capability to clear the entire disk
using a single Write Same command.

CORRECTION FOR APAR MA41237 :
-----------------------------
The command dasdzero will change to use the Write Same command.
A new dasdensureclear command will invoke the code previous
invoked by dasdzero.  This will provide the new behavior on SAS
drives, and the old behavior on non-SAS drives.  For IOP based
drives, dasdzero and dasdensureclear will have the same
behavior.

To provide that capability, the IoHwDevDasd:ensureClearAsync()
is adding a new input parameter of forceWPB.  The new interface
is:

void ensureClearAsync(IoDdEnsureClearStatus &statusObject,
Boolean forceSFI = FALSE,
Boolean logicalWPB = FALSE,
NumberOfPages maxPageCount = IoDdMaxPageCnt,
DasdErrorRecovery erpLevel = ExhaustDasdErp,
Boolean forceWPB = FALSE );


The new dasdensureclear command calls the code previously called
by dasdzero.  The dasdzero code changes to set the forceWPB
input of ensureClearAsync.

CIRCUMVENTION FOR APAR MA41237 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


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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.............................V7R1M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA41237
Superseded by:......................View fix details for PTF MF99011
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C2115710


System i Support

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Document Information

Modified date:
13 October 2011