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Wafl memory utilization keeps fluctuating

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ontap-9
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perf
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Applies to

  • FAS arrays over FCP
  • ONTAP 9.4 and later version 

Issue

  • Multiple EMS events can be seen over time where wafl memory utilization fluctuates and availability varies from 1 GB to 3 GB

     wafl.memory.statusLowMemory

     wafl.memory.statusVeryLowMemory

  • Performing TO/GB clears the thread and events were not seen for few days but fix is to upgrade the ONTAP to the fixed version 

 

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