IJ53560: FILE SYSTEM CANNOT BE RECOVERED AFTER SGPANIC FOLLOWED BY UNMOUNT.

APAR status

• Closed as program error.

Error description

• Upon hitting SGPanic (due to OOS (Out Of Space) at the physical
  device(s)) in the file system with FCMs, there is (high)
  possibility that the diskSpaceState stays in DSS_OOS after the
  emergency space released.
  

Local fix

Problem summary

• Upon hitting SGPanic (due to OOS (Out Of Space) at the physical
  device(s)) in the file system with FCMs, there is (high)
  possibility that the diskSpaceState stays in DSS_OOS after the
  emergency space released.
  

Problem conclusion

• This problem is fixed in 5.2.2.1
  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:
  With the fix, the diskSpaceState will be transitioned properly
  (from DSS_OOS to DSS_Critical) upon releasing the emergency
  space.
  
  Work Around:
  None
  
  Problem trigger:
  On a file system with FCM 4, fill up the file system until all
  physical capacity is used so that it can trigger SGPanic due to
  OOS (Out Of Space) condition.
  
  Symptom:
  After the file system suffers with SGPanic, it will be
  unmounted. For recovery, the file system will be mounted in
  'restricted' mode and the emergency space will be release (with
  'mmreclaimspace <fs> --emergency-reclaim' command). However,
  after the emergency space is released, the file system would
  stay DSS_OOS as oppose to the expectation. Because of this, the
  file system can't be mounted in 'space-reclaim' mode which is a
  step required for the recovery.
  
  Platforms affected:
  Linux
  
  Functional Area affected:
  thin-provisioning
  
  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