nfsserver resource with nfsv4_only=true fails to stop with the following error 'Failed to unmount a bind mount'

Solution In Progress - Updated -

Issue

  • nfsserver resource configured with nfsv4_only=truefails to stop with exitreason='Failed to unmount a bind mount', leading to fencing

Environment

  • Red Hat Enterprise Linux 8 (with the Pacemaker High Availability Add-on)
  • nfsserver resource configured with nfsv4_only=true
  • resource-agents-4.9.0-54.el8_10.1

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