IJ52512: FIX POTENTIAL ASSERTION IN THE GPFS DAEMON (MMFSD) DURING DELETE SNAPSHOT OPERATIONS

APAR status

• Closed as program error.

Error description

• During some delete snapshot operations, the parallel inode
  traversal (PIT) operation may unexpectedly fail with an
  assertion when trying to send the interesting inodes file back
  to the client command.
  

Local fix

Problem summary

• During some delete snapshot operations, the parallel inode
  traversal (PIT) operation may unexpectedly fail with an
  assertion when trying to send the interesting inodes file back
  to the client command.
  

Problem conclusion

• This problem is fixed in 5.2.1.1
  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:
  By hardening the communication between the parallel inodes
  traversal (PIT) operation and the client command, the GPFS
  daemon (mmfsd) will not assert while servicing the delete
  snapshot request.
  
  Work Around:
  None.
  
  Problem trigger:
  There is no specific trigger that forces this issue to manifest.
  
  
  Symptom:
  Failure to delete snapshots.
  
  Platforms affected:
  ALL
  
  Functional Area affected:
  GPFS Core
  
  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