IJ39945: REPLICA MISMATCH AFTER NODE FAILURE/FILE SYSTEM PANIC

APAR status

• Closed as program error.

Error description

• Replica mismatch could occur if file system panic or node
  fails while there are directIO writes in progress.
  This could happen on a file system with data replication
  and rapid repair is enabled.
  

Local fix

• Disable rapid repair feature on the file system
  

Problem summary

• Replica mismatch could occur if file system panic or node
  fails while there are directIO writes in progress.
  This could happen on a file system with data replication
  and rapid repair is enabled.
  

Problem conclusion

• This problem is fixed in 5.1.2 PTF 5
  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:
  Update code to prevent possible replica mismatch after
  file system panic or node failure during directIO write.
  
  Work Around:
  Disable rapid repair feature on the file system
  
  Problem trigger:
  File system panic or node failure while directIO write
  is in progress and down disk in 1 or more replica
  
  Symptom:  Unexpected Results/Behavior
  
  Platforms affected:  ALL Operating System environments
  
  Functional Area affected:  All Scale Users
  
  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 STD

• Fixed component ID

  5737F33AP

Applicable component levels