IJ44831: MEMORY LEAK ON TOKEN MANAGER NODE

APAR status

• Closed as program error.

Error description

• After GPFS 5.1.2 release, on some token manager node,
  the memory from token management subpool may be leaked.
  This can be observed from output of mmfsadm dump malloc:
  
  Statistics for MemoryPool id 3 ("UNPINNED_TM") at
  0xF1000012C00246C8:
  ...
  Memory subpool 'HolderList' at 0xF1000012C00258B0
    objSize 16 spObjectsPerChunk 65536 expandInProgress 0
    inUse 140052583 free 63385 total 140115968 limit 2147483647
  the "inUse" filed is increased gradually.
  

Local fix

Problem summary

• After GPFS 5.1.2 release, on some token manager node,
  the memory from token management subpool may be leaked.
  This can be observed from output of mmfsadm dump malloc:
  
  Statistics for MemoryPool id 3 ("UNPINNED_TM") at
  0xF1000012C00246C8:
  ...
  Memory subpool 'HolderList' at 0xF1000012C00258B0
    objSize 16 spObjectsPerChunk 65536 expandInProgress 0
    inUse 140052583 free 63385 total 140115968 limit 2147483647
  the "inUse" filed is increased gradually.
  

Problem conclusion

• This problem is fixed in 5.1.2.9
  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:
  Avoid the memory subpool leak
  
  Work Around:
  None
  
  Problem trigger:
  During token management, one type of object is missed freed
  when the token is destroyed.
  
  Symptom:
  Out-of-memory, Unexpected Results/Behavior
  
  Platforms affected:
  ALL OS environments
  
  Functional Area affected:
  All Scale Users
  
  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