PTF Cover Letter
PTF ( Program Temporary Fixes ) Cover letter
LIC-PERF SMB2 Query Directory Causing Paging
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
-----------------------------------------------
The IBM i NetServer QZLSSERVER job experiences high paging
levels when SMB2 is in use.
CORRECTION FOR APAR MA46670 :
-----------------------------
An internal heap allocation used by IBM i NetServer for Query
Directory operations is much larger than necessary. Frequent
Query Directory operations will cause a lot of system activity
to allocate and clear heap space.
This PTF reduces the internal allocation to an appropriate size
for the amount of data that can be returned in a Query Directory
response.
CIRCUMVENTION FOR APAR MA46670 :
--------------------------------
None.
Activation Instructions
None.
Special Instructions
ENDTCPSVR *NETSVR before applying or removing this PTF.
STRTCPSVR *NETSVR after applying or removing this PTF.
********************************************************************
THE FOLLOWING ARE SUPERSEDED SPECIAL INSTRUCTIONS. IF THE SUPERSEDED
PTF HAS ALREADY BEEN APPLIED AND ITS SPECIAL INSTRUCTION FOLLOWED,
IT IS NOT NECESSARY TO FOLLOW THAT SPECIAL INSTRUCTION AGAIN.
********************************************************************
SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF MF64187 :
=================================================
ENDTCPSVR *NETSVR before applying or removing the PTF.
STRTCPSVR *NETSVR after applying or removing the PTF.
IBM i NetServer can be configured to disable the SMB1 protocol by using
the following command:
CALL QZLSMAINT PARM('40' '1' '0x100')
The configuration change takes effect immediately, and any existing
SMB1 connections to the server will fail. It is recommended to make
the configuration change while NetServer is not active.
Use of the SMB1 protocol can be restored by calling the following
command, if needed:
CALL QZLSMAINT PARM('40' '2' '0x100')
Whenever the server is configured to enable or disable a version of the
SMB protocol, it may be necessary to reboot client PCs for the client
to begin using the new settings.
Default Instructions
THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.
Supersedes
PTF/FIX NO(S). APAR TITLE LINE
-------------- ------------------------------------------------------------
MF64187 LIC-OTHER Allow Disable of SMB1 Support for IBM i NetServer
MF64050 LIC-INCORROUT SMB2 Close chained after Query fails with STAT
MF63675 LIC-INCORROUT 'SAVE AS' FROM INTERNET EXPLORER TO A NETSERVE
MF63672 OSP-MSGMCH3203 HEAP SPACE PROBLEM CAUSES NETSERVER TO FAIL T
MF63402 LIC-INCORROUT SMB2 COMPATIBILITY ENHANCEMENTS
MF63369 LIC-INCORROUT SMB2 Delete Fails for Some Clients
MF63136 LIC-OTHER-INCORROUT WINDOWS SYSTEM ERROR 1359 MAPPING SMB2 N
MF61210 LIC-OTHER-INCORROUT NETSERVER ACCESS DENIED
MF60936 LIC Support Raw NTLMSSP Authentication to IBM i NetServer
MF62394 OSP-OTHER-UNPRED WINDOWS CLIENT GETS "SYSTEM ERROR 1359" WHE
MF62364 OSP-OTHER-INCORROUT CANNOT WRITE TO NETSERVER SHARE WHEN "AL
MF61485 LIC-INCORROUT SMB2 Null bytes padded at end of file
MF61182 LIC-OTHER IBM i NetServer does not grant SMB2 oplocks
MF61075 LIC-OTHER Listing shares by UNC server name fails for Window
MF61075 LIC-OTHER SMB2 with Samba client slow when signing is requir
MF61075 LIC-OTHER SMB2 Lock requests may unexpectedly conflict
MF60937 LIC Heap Storage Leak for IBM i NetServer SMB2 Requests
MF60937 LIC-INCORROUT SMB2 Sharing Violation on Get Attributes
MF60934 LIC Multiple SMB2 Failures with Samba 4 Clients
Summary Information
System.............................. | i |
Models.............................. | |
Release............................. | V7R3M0 |
Licensed Program............... | 5770999 |
APAR Fixed.......................... | View details for APAR MA46670 |
Superseded by:...................... | View fix details for PTF MF69182 |
Recompile........................... | N |
Library............................. | QSYS |
MRI Feature ........................ | NONE |
Cum Level........................... | C8025730 |
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Modified date:
17 December 2021