NFS 4.1 - How does proxmox gets the status?

Hello @fiona and all

Do you know how proxmox get a NFS share status?

I have managed to add Tintri 5.6.0 release using NFS 4.1 and able to have live VMs on it but the status is shown as such
root@node16-84:~# pvesm status
Name Type Status Total Used Available %
PBS-16-254 pbs active 14912781196 8874556332 5286589256 59.51%
local dir...

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