nfs is the Network File System. - Configured in linux at /etc/exports - Great info here: http://nfs.sourceforge.net/

Tips and Tricks

Regarding mount points within shares

If you have a mount point within an NFS share, you must have a separate entry in your exports file that sets the permissions of this mount point. Currently OS X has a problem with this, but officially this is the way to do it.

Show hosts that are connected to this NFS server

showmount

Show what hosts are using what exports

showmount -a

Show exported directories

showmount-e

Show directories in use by NFS

showmount -d

Add an NFS mount to fstab

opal:/z4 /mnt/z4 nfs rsize=8192,wsize=8192,timeo=14,intr

Linux Tips and Tricks

Show which versions of NFS your NFS server supports

rpcinfo -p

Allow an OS X client to mount nfs4 nested zfs data sets

OS X has problems with the privileged port default requirement in nfs4, so the insecure option is required.

The nohide option allows you to mount nested zfs datasets, instead of requiring a separate export for each dataset.

/z4 *.local(rw,async,no_subtree_check,insecure,nohide)

OS X Tips and Tricks

Create persistent NFS mount in OS X 10.8

This is not bulletproof. Modern OS X 10.9+ version are switching away from NFS to CIFS. The NFS client on OS X is pretty weak. For instance it might crash your machine if the share has 0 bytes free but is mounted RW. Use at your own risk.

sudo mkdir /mnt # OS X doesn't like you playing with /Volumes, it may delete your dirs
sudo dscl . -create /Mounts/z4
sudo dscl . -create /Mounts/z4 VFSLinkDir /mnt/z4
sudo dscl . -create /Mounts/z4 VFSOpts resvport rw nosuid
sudo dscl . -create /Mounts/z4 VFSType nfs
sudo dscl . -create /Mounts/z4 RecordName opal:/z4
sudo dscl . -create /Mounts/iTunes
sudo dscl . -create /Mounts/iTunes VFSLinkDir /mnt/z4/iTunes
sudo dscl . -create /Mounts/iTunes VFSOpts resvport rw nosuid
sudo dscl . -create /Mounts/iTunes VFSType nfs
sudo dscl . -create /Mounts/iTunes RecordName opal:/z4/iTunes
sudo dscl . -read /Mounts/opal:/z4
sudo dscl . -read /Mounts/opal:/z4/iTunes
sudo dscl . -list /Mounts

sudo dscl . -delete /Mounts opal:/z4/iTunes