NFS: Mount FE dir on BE

fe# cat /etc/exports
#
/mythtv 192.168.1.0/24(rw,sync)

fe# service nfs start

be# mount 192.168.1.13:/mythtv /mnt
---
Mount be dir on fe:

be# cat /etc/exports
/mythtv/recordings 192.168.1.0/24(rw,sync)

fe# mount 192.168.1.200:/mythtv/recordings /mnt