IJ41014: ESTALE ERROR USING KNFS ON SCALE 5.1.3.0

APAR status

• Closed as program error.

Error description

• After upgrading Scale on the exporting kNFS nodes to
  5.1.3.0 (or 5.1.2.4) NFS clients mounting from Scale
  report
   stale file handles after a while.
  

Local fix

• Downgrade Spectrum Scale to 5.1.2.3 or lower
  

Problem summary

• After upgrading Scale on the exporting kNFS nodes to
  5.1.3.0 (or 5.1.2.4) NFS clients mounting from Scale
  reports
  stale file handles after a while.
  

Problem conclusion

• This problem is fixed in 5.1.2 PTF 6
  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:
  The NFS COMMIT request through the Linux kernel nfsd
  server is handled correctly, and no unnecessary error
  is sent back to the NFS client system.
  
  Work Around:
  There is no direct workaround. Using the CES protocol
  stack, which uses NFS Ganesha could be a workaround,
  but is a larger config change.
  
  Problem trigger:
  This is triggered by the NFS client sending a NFS
  commit message to the Linux kernel nfsd server on
  a GPFS node. The exact trigger depends on the NFS
  client, and memory usage on the NFS client system,
  so can be hard to predict.
  Symptom: IO Error
  Specify those that apply: ALL Linux OS environments
  Functional Area affected: NFS
  Customer Impact: Critical
  

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 DME

• Fixed component ID

  5737F34AP

Applicable component levels