RHEL8.1: DFS provided SMB shares are not accessible after failover

Solution Verified - Updated -

Issue

  • Accessing a SMB share through DFS after failover returns Resource temporarily unavailable
  • Network captures show Tree Connect Response, Error: STATUS_BAD_NETWORK_NAME
  • Access is retained during DFS failover for toplevel SMB targets, but SMB targets within sub-directories fail.

Environment

  • Red Hat Enterprise Linux 8.1
  • kernel-4.18.0-147.el8 or later.
  • SMB targets accessed through DFS.

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