IJ51712: ROBUSTNESS IMPROVEMENTS TO WINDOWS HELPER UTILITY MMWMI.EXE.

APAR status

• Closed as program error.

Error description

• mmwmi.exe is a helper utility on Windows which is used by
  various mm* administration scripts to query various system
  settings such as IP addresses, mounted filesystems and so on.
  Under certain conditions such as active realtime scanning by
  security endpoints and anti-malwares, the output of mmwmi is not
  sent to stdout and any connected pipes that depend on it. This
  can cause various GPFS configuration scripts, such as
  mmcrcluster to fail.
  

Local fix

Problem summary

• mmwmi.exe is a helper utility on Windows which is used by
  various mm* administration scripts to query various system
  settings such as IP addresses, mounted filesystems and so on.
  Under certain conditions such as active realtime scanning by
  security endpoints and anti-malwares, the output of mmwmi is not
  sent to stdout and any connected pipes that depend on it. This
  can cause various GPFS configuration scripts, such as
  mmcrcluster to fail.
  

Problem conclusion

• This problem is fixed in 5.1.9.5
  To see all Spectrum Scale APARs and their respective
  Fix solutions refer to page: 
  https://public.dhe.ibm.com/storage/spectrumscale/spectrum_scale
  _apars.html
  
  
  Benefits of the solution:
  Make mmwmi.exe robust so that any slowness induced by security
  endpoints does notresult in output errors during invocation of
  various GPFS administration commands.
  
  Work Around:
  None.
  
  Problem trigger:
  Execute GPFS administration commands (such as mmcrcluster)
  during active anti-virus and anti-malware realtime scanning.
  
  Symptom:
  Unexpected Results/Behavior.
  
  Platforms affected:
  Windows/x86_64 only.
  
  Functional Area affected:
  Admin Commands.
  
  Customer Impact:
  High Importance.
  

Temporary fix

Comments

APAR Information

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

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

Fix information

• Fixed component name

  SPEC SCALE STD

• Fixed component ID

  5737F33AP

Applicable component levels