Is fstrim supported with NFS?

Solution Verified - Updated -

Issue

  • # fstrim ran directly against a NFS share returns "the discard operation is not supported"
  • If a KVM guest is backed by NFS storage, # fstrim ran within the guest frees up space with certain NFS server vendors.

Environment

  • Red Hat Enterprise Linux
    • 7
    • 8
  • NFSv4.2

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