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cifs access slow or failing with veritas fpolicy due to zero window replies

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Applies to

  • ONTAP 9
  • Vertias Data Insight fpolicy

Issue

  • Cifs access may increased slowness, latency, or may fail when fpolicy for veritas is enabled
  • Disabling fpolicy works around the issue
  • Disabling then re-enabling may temporarily workaround the issue
  • logs may show 
    • [node:fpolicy.eagain.on.write:notice]: Write returned EAGAIN while sending notification to the FPolicy server
      
  • packet trace shows continuous zero windows being sent from veritas data insight

 

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