II08210: DFSMS/NFS V1R2M0 FMIDS HDZ11NE & HDZ11NP - ADDITIONAL INFORMATION AND TEMPORARY RESTRICTIONS. NFSS

APAR status

• Closed as canceled.

Error description

• Component ID:  5695DF121
  Releases:      1NP  1NE
  Information APAR to document additional information and
  temporary restrictions for MVS NFS server feature of
  DFSMS v1r2m0:
  1). APAR dependency list :
  
  Product       APAR       Symptom                  Comments
  
  OE Socket     OW08076     hang                    HDZ11NE only
  
                OW05135                             HDZ11NE only
  OE Kernel     OW06094     Racf Permission denied  If access HFS
  
  
  LE 1.3        PN55785                             Must install
  
                PN55980
  
                PN56000
  
  DFSMS 1.2     OW07230    Cannot access legacy
  
                OW06999    External link fails
  
                OW08101    Damage HFS
  
  TCP/IP 3.1    PN62474    NFS appears hang
  
  2) Dispatching Priority
     Problem: When TCP/IP and NFS are assigned to the same
              mean-time-to-wait dispatching priority in MVS SP 5.1
              there can be times when NFS will have a higher
               dispatching priority than TCP/IP.  This seems
               to affect NFS performance adversely.
     Solution: Assign fixed priorities to TCP/IP and NFS such
               that TCP/IP has a higher priority than NFS.
  
  3)  Problem:  NFS Server shuts down on startup, issues -
  GFSA402I READ FAILED FOR THE ATTRIBUTE DATA SET.
  GFSA330I SERVER SHUTDOWN COMPLETE.
  check your nfstasks attributes.  APAR OW08266 reduced the
  maximum of n+m from 100 to 25:
  "nfstasks (n,m) limits in the installation attributes data
       set. The sum of n and m cannot exceed 25."
  
  Be sure to reduce the value to 25 or below.  The documentation
  change is done with APAR OW19389.
  .
  4) Temporary restriction of mounting HFS :
  
   Mounting on a child or parent directory of an existing mount
   point for OpenEdition HFS is not allowed and will be blocked.
  
  e.g. If a mount is made against /u/smith,
  the mount against /u/smith/project or against /u will be
  rejected.
  GFSA785I MOUNT ON CHILD/PARENT OF AN ALREADY MOUNTED DIRECTORY
           string FAILED (TEMPORARY HFS RESTRICTION: REFER TO
           INFO APAR: II08210).
  
  This restriction is removed with application of OW12199 -
  HDZ11NE/UW18827  HDZ11NP/UW18828.
  .
  5) Temporary restriction of accessing data set with recfm of
     VS OR VBS:
     Read and write accesses are blocked.
  .
  This restriction is removed with application of APAR OW12200,
  HDZ11NE/UW18827  HDZ11NP/UW18828.
  
  6) Updated message:
   GFSA898I - EOL SEQUENCE MISMATCH FOR DATA SET dsname(mem-name).
  
   - Apply only to textmode processing with end-of-line character
  
   - Condition that may influence the processing:
  
    -- Append or update a record and overwrite the end-of-line
       characters is not allowed.
  
    -- File timed out before the continuation of data packet ar-
   rive. It may occur due to the inefficiency of network traffic,
   clients delayed write algorithm of the last data packet.
   Processing attribute writetimeout value should be lengthened
   if the error occurs frequently.
    Some information about NFS's useage of port 2049.
       Both DFSMS/MVS NFS Server and Client use
     port 2049 to communicate with any other
     NFS Client or Server in the network.
     Any reservation of this port number
     will cause a communications problem.
       If your TCP/IP profile and/or OpenEdition MVS file system
     profile have a reserve statement for port 2049, you will
     have a communication problem between DFSMS/MVS NFS and
     any other NFS Server or Client.
     1) TCP/IP profile
  
     The statement under PORT reservation
  
       2049 UDP MVSNFS              ; NFS Server
  
     causes TCP/IP to reserve port 2049.
     This means the DFSMS/MVS NFS server cannot
     register port 2049. This causes the communications
     problem between DFSMS/MVS NFS Server and any NFS Client.
     THIS STATEMENT SHOULD BE COMMENTED OUT.
     2) OpenEdition MVS file system profile
  
     During OpenEdition MVS file system initialization, the
     FILESYSTYPE PARMLIB statement for the network
     in the SYS1.PARMLIB(BPXPRMxx) member may have incorrect
     port information. This causes the DFSMS/MVS NFS Server
     and/or Client communicaitons problem.
     If your BPXPRMxx member looks like the following:
  
     FILESYSTYPE TYPE(INET) ENTRYPOINT(BPXTCINT)
     NETWORK DOMAINNAME(AF_INET)
             DOMAINNUMBER(2)
             MAXSOCKETS(64)
             TYPE(INET)
             INADDRANYPORT(2000)
             INADDRANYCOUNT(325)
  
     SUBFILESYSTYPE NAME(INETONE)
                    TYPE(INET)
                 ENTRYPOINT(BPXTIINT)
                 DEFAULT
  
     This statement causes OpenEdition
     to reserve a range of ports starting
     at 2000 until 2324. DFSMS/MVS NFS port, 2049,
     happens to be within this reserved
     range. This causes port 2049,
     to be unavailable to DFSMS/MVS NFS.
     This causes the communications problem.
  
  
     To correct this statement you should:
  
        change the ENTRYPOINT name to BPXTIINT and
        MAXSOCKETS to 2000.
  
        delete the lines beginning with:
            INADDRANYPORT
            INADDRANYCOUNT
            SUBFILESYSTYPE
            TYPE
            ENTRYPOINT
            DEFAULT
     Once you have done this you should end up with a FILESYSTYPE
     statement that looks like this:
  
     FILESYSTYPE TYPE(INET) ENTRYPOINT(BPXTIINT)
     NETWORK DOMAINNAME(AF_INET)
             DOMAINNUMBER(2)
             MAXSOCKETS(2000)
             TYPE(INET)
  
  
  Using the DFSMS/MVS NFS Server to access conventional MVS data
  sets, the server generates dummy values for the UNIX
  attributes of file system information because they have no
  meaning in the MVS context.  The hard coded values for the
  filesystem are as follows:
        - block size (in bytes)      = 4096
        - total number of blocks     = 30000
        - number of free blocks      = 15000
        - number of blocks available = 15000
  The file size for conventional MVS dataset as a directory has
  a hard coded value of 8192 bytes.
  
  The NFS Server starts and message GFSA348I is not received.
  If TCP/IP is terminated, NFS Server ends with the console
  message: GFSA559I CANNOT CREATE UDP SERVICE.
  Check to see that Portmapper is active.
  msgGFSA348I msgGFSA559I
  

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

• Closing
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels