IJ44119: ADD VINFOLOCKONWRITE CONFIG TO HOLD VINFO LOCK FOR FILE WRITE OPERATION

APAR status

• Closed as program error.

Error description

• Add vinfoLockOnWrite config to hold vinfo lock for
  file write operation. Enabling this config
  can solve the write performance
  degradation of Ganesha/NFS found
  between GPFS 5.1.1 and GPFS 5.1.2.
  

Local fix

Problem summary

• Add vinfoLockOnWrite config to hold vinfo lock for
  file write operation. Enabling this config
  can solve the write performance
  degradation of Ganesha/NFS found
  between GPFS 5.1.1 and GPFS 5.1.2.
  

Problem conclusion

• This problem is fixed in 5.1.2 PTF 8
  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:
  Enabling this config can solve the write performance
  degradation of Ganesha/NFS found between
  GPFS 5.1.1 and GPFS 5.1.2.
  
  Work Around:
  None
  
  Problem trigger:
  Ganesha/NFS write performance degradation is more likely
  to occur if the number of Ganesha threads is large.
  
  Symptom:
  Performance Impact/Degradation
  
  Platforms affected:
  
  ALL Operating System environments
  
  Functional Area affected:
  NFS
  
  Customer Impact:
  Suggested
  

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