LI82427: HANG WHEN STOPPING SNA: LOOP IN SNATNSRVR_MT

APAR status

• Closed as program error.

Error description

• When stopping SNA, it is possible the snatnsrvr_mt process can
  enter a loop for a period of time, causing the following
  messages to be logged thousands of times:
  
  In sna.err:
  SNAPATH  Message 16388 - 8, Subcode: 0 - 0
  Log category: PROBLEM   Cause Type: External
  System: snalab1
  Process ID: 5439972 (snatnsrvr_mt)
  
  I/O Error during Stream IOCtl or FCntl.
  Errno = 9 (Bad file number)
  
  Cause:  The Stream to the SNA software has reported an I/O
  error.
  Action:  Check the operating system return code shown; check for
  other messages providing more information about the failure.
  
  In sna.aud:
  TNSERVER Message 4102 - 15, Subcode: 1 - 0
  Log category: AUDIT     Cause Type: Audit
  System: snalab1
  Process ID: 5439972 (snatnsrvr_mt)
  
  TN Server stopping - system termination message received.
  
  Cause:  The SNA software has been stopped.
  

Local fix

Problem summary

• The snatnsrvr_mt process can enter a loop when "sna stop" is
  issued while there is a tn3270 connected with an active LU-LU
  session.
  

Problem conclusion

• The TN Server code has been changed to ensure the snatnsrvr_mt
  process is terminated when this streams error is detected during
  termination of SNA.
  

Temporary fix

Comments

APAR Information

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

  IJ30173

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

Fix information

• Fixed component name

  CS DCD LINUX 7.

• Fixed component ID

  5725H3201

Applicable component levels