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If I have Computer-A, and share a folder to be accessed by Computer-B, can I take that same shared folder and share it with Computer-C?

Computer-B has two itnerface cards, eth0, and eth1. eth0 is connected on the same network as Computer-A, and eth1 is connected on an alternate network that Computer C.

Computer-B is on both networks.

Computer-A <--> Computer B <--> Computer C

Platform: Ubuntu 10.04



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What version of NFS are you using? – ghm1014 Sep 30 '11 at 20:22
someuser@somewhere:/usr/include/nfs$ rpcinfo -p localhost | grep -i nfs 100003 2 udp 2049 nfs 100003 3 udp 2049 nfs 100003 4 udp 2049 nfs 100003 2 tcp 2049 nfs 100003 3 tcp 2049 nfs 100003 4 tcp 2049 nfs – The_Green_Manster Sep 30 '11 at 20:45

You cannot re-export a mounted NFS filesystem, second-hand, because Computer B doesn't have authority to export that filesystem again. Not to mention the problems you could have with locking, and stale nfs handles.

There is a userland nfs server, uNFS, that can share just about anything, including re-exporting mounted NFS filesystems, however it specifically says that results should be considered unreliable.

You're really better off having Computer A share to both B and C

Computer A --> Computer B
           --> Computer C
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