AutoFS

Server:

apt-get install nfs-kernel-server

edit /etc/exports:
/a1/base 10.0.0.2 (rw, async, no_subtree_check, no_root_squash)
/a1/out 10.0.0.2 (rw, async, no_subtree_check, no_root_squash)

/etc/init.d/nfs-kernel-server restart

Client

apt-get install autofs

edit /etc/auto.master:
/a1 /etc/auto.nfs

edit /etc/auto.nfs:
base -rw 10.0.0.1:/a1/base
out -rw 10.0.0.1:/a1/base/logs

/etc/init.d/autofs restart

Test:

Server:

touch /a1/base/logs/TEST_FILE

Client:

ls /a1/out
TEST_FILE