portsnap problem

[Wojciech Puchar]

i have up to day portsnap database on one host in /var/db/portsnap

portsnap update works correctly

i exported it over NFS
/var/db/portsnap -ro -network 10/8


and mounted on another computer

10.1.0.1:/var/db/portsnap /var/db/portsnap nfs ro,late 0 0


and portsnap doesn't work

# portsnap update
No snapshot available.  Try running
# portsnap fetch


what's more is needed that is not in /var/db/portsnap?