PTF Cover Letter
PTF ( Program Temporary Fixes ) Cover letter
OSP-OTHER-INCORROUT NETSERVER NOT RESPONDING AND QZLSFILET I
Pre/Co-Requisite PTF / Fix List
REQ LICENSED PTF/FIX LEVEL
TYPE PROGRAM RELEASE NUMBER MIN/MAX OPTION
---- -------- --------- ------- ------- ------
CO 5770999 V7R3M0 MF64772 00/00 0000
CO 5770999 V7R3M0 MF64296 00/00 0000
DIST 5770SS1 V7R3M0 SI65556 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.
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
-------------------------------------------------
Instances occur where IBM i NetServer response takes longer than
usual and eventually NetServer appears to lock up and mapped
drives are not accessible. When this happens, the QZLSFILET job
is in MTXW status. After a period of time the problem clears and
NetServer operates normally.
CORRECTION FOR APAR 'MA47234' :
-------------------------------
A timing window exists in the SMB2 Read and Write request
processors where a file reference may not be released if the
client session begins close processing while the operation is in
progress. The dangling reference can cause the session close
processing to take a long time to complete.
IBM i NetServer has been changed to ensure file references are
released. The PTF corrects the problem.
CIRCUMVENTION FOR APAR 'MA47234' :
----------------------------------
None.
DESCRIPTION OF PROBLEM FIXED FOR APAR 'MA47236' :
-------------------------------------------------
Attempts to run certain application executable files that are
stored in IBM i NetServer shares will hang. Network activity
shows that the client is repeatedly attempting to read the same
range of data beyond the end of the executable file during the
hang.
CORRECTION FOR APAR 'MA47236' :
-------------------------------
IBM i NetServer follows Posix file system semantics that reading
past the end of file is not an error. The read returns success
with zero bytes read. The SMB2 protocol specification is
unclear that an error response is expected in this situation.
Samba servers handle the same condition by returning a
STATUS_END_OF_FILE error.
The IBM i NetServer SMB2 behavior has been changed to return
STATUS_END_OF_FILE if a client attempts to read beyond the end
of file. This more closely matches the behavior of other SMB2
servers.
CIRCUMVENTION FOR APAR 'MA47236' :
----------------------------------
None.
Activation Instructions
None.
Special Instructions
ENDTCPSVR *NETSVR before applying or removing the PTF.
STRTCPSVR *NETSVR after applying or removing the 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 MF64938 :
=================================================
ENDTCPSVR *NETSVR before applying or removing the PTF.
STRTCPSVR *NETSVR after applying or removing the PTF.
If you have experienced corruption or loss of IBM i NetServer function,
an IPL of the system will be required to recover after applying the
PTF.
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
-------------- ------------------------------------------------------------
MF64871 LIC-INCORROUT Change Default SMB2 IOCTL Response
MF64871 LIC-INCORROUT Invalid Session Setup Responses After Failed C
MF64871 LIC-INCORROUT Unsupported Security Option on SMB2 Negotiate
MF64871 LIC-INCORROUT SMB2 Server Delays on Set Attribute
MF64871 LIC-INCORROUT Honor FILE_NON_DIRECTORY_FILE Flag
MF64938 LIC-INCORROUT IBM i NetServer RMDIR and Other Failures
MF64774 LIC-SRCB6000302-UNPRED SYSTEM FAILS WITH SRCB6000302
MF64672 LIC-UNPRED-MSGCPIB683 NETSERVER BECOMES UNUSABLE
MF64402 LIC-OTHER INTERNAL EXTENSIONS FOR MAINTAINABILITY
MF64414 LIC-INCORROUT Guest Access Fails with Extended Session Secur
MF64298 LIC-INCORROUT Add Extended Session Security for IBM i NetSer
MF61727 LIC-UNPRED TMPSTG LEAK IN NETSERVER SMB2 QUERY DIRECTORY
MF64207 LIC-PERF SMB2 Query Directory Causing Paging
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 MA47234 View details for APAR MA47236 |
Superseded by:...................... | View fix details for PTF MF69182 |
Recompile........................... | N |
Library............................. | QSYS |
MRI Feature ........................ | NONE |
Cum Level........................... | C9116730 |
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Modified date:
17 December 2021