Every filesystem on the ZFSSA must be given a unique mountpoint which serves as the access
point for the filesystem data. Projects can be given mountpoints, but these serve only as a tool to
manage the namespace using inherited properties. Projects are never mounted, and do not export data
over any protocol.
All shares must be mounted under /export. While it is possible to create a
filesystem mounted at /export, it is not required. If such a share doesn't exist,
any directories will be created dynamically as necessary underneath this portion of the hierarchy.
Each mountpoint must be unique within a cluster.