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CONTAP-438668: The client does not receive the 'change notify' response on either the origin or cache end in the FlexCache environment

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ontap-9
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Issue

  • In a FlexCache environment, the CIFS client does not receive change notification responses from ONTAP. 
  • As a result, the client is not ablet promptly reflect file changes, which affects applications that rely on change notifications.
  • Encounter this issue, the following symptoms can be observed:

           1. Change notification works normally shortly after ONTAP reboots, however the issue appears after few days.
           2. The same problem occurs whether the client accesses the origin or cache side of the FlexCache environment.
           3. This phenomenon is unrelated to the FlexCache WriteBack feature.

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