IJ53594: I/O FAILURE OCCUR DURING GW NODE FAILOVER AND FAILBACK

APAR status

• Closed as program error.

Error description

• Earlier a fix for the same issue was made, but it was
  considering to return RESTART between the Gateway node and app
  node only whenqueue is dropped. But there can be cases where
  Gateway node is being shutdown without queue being in dropped
  state.
  

Local fix

Problem summary

• Earlier a fix for the same issue was made, but it was
  considering to return RESTART between the Gateway node and app
  node only whenqueue is dropped. But there can be cases where
  Gateway node is being shutdown without queue being in dropped
  state.
  

Problem conclusion

• This problem is fixed in 5.1.9.8
  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:
  Fixed the code more generically so that RESTART is returned from
  gateway to app node in many such failure scenarios.
  
  Work Around:
  None
  
  Problem trigger:
  Trigger Read on a single large file from COS to Cache and
  meanwhile shutdown the fileset's gateway or start a gateway node
  that was shutdown already.
  
  Symptom:
  IO Failure
  
  Platforms affected:
  Linux Only
  
  Functional Area affected:
  AFM
  
  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