This system view returns a list of NFS mount points that have been created for storing external tables.

Column Name Data Type Description
ref_name text Reference name for the mount point.
resource text Actual path to the mount point.
options text Options used to create the mount point.
For example:
premdb=# select * from sys.mount;
        ref_name        |           resource            |        options         
   /qumulo/yb100        | nfs://qumulo:/data/yb100/     | {"gid" : 0, "uid" : 0}
(2 rows)