NFS setting error in Ubuntu 8.10

[Tom H]

On Sun, Nov 1, 2009 at 9:49 AM, loody <miloody at gmail.com> wrote:

> I sudo apt-get install nfs-kernel-server, nfs-user-server and nfs-common.
> After config /etc/exports as I need, I execute "nfs-kernel-server
> restart", but I cannot see any message show out.
> then I execute "showmount -e localhost" and I cannot see any files shared out.
>
> below are my outputs:
> # /etc/init.d/nfs-kernel-server restart
> # showmount -e localhost
> portmap getport: RPC: Success
> #
>
> if I execute "nfs-user-server restart", I can see my sharing folders as below:
> # /etc/init.d/nfs-user-server restart
> Stopping NFS servers: mountd nfsd.
> Starting NFS servers: nfsd mountd.
> # showmount -e localhost
> Export list for localhost:
> /media/test_NFS      *
> #
>
> but I cannot mount it from another Ubuntu.
> my questions are:
> 1. what is difference between "nfs-kernel-server" and "nfs-user-server"?
> 2. why my nfs-kernel-server doesn't show anything? did I miss something?
> 3. are there any additional commands or packages can help me to find
> out what's wrong?

1. nfs-user-server runs in user-space. It was replaced by unfs in
Jaunty. It is less reliable and is limited to nfsv2. It also has other
limitations when compared to nfs-kernel-server but I have forgotten
them.

2. I am surprised that you are able to install them both. I thought
that they were incompatible. I would uninstall nfs-user-server, set up
nfs-kernel-server again, and make sure that all the relevant services
are running (if you want to use nfs-kernel-server). With
nfs-user-server, you might need to force an nfsv2 mount on your
client.

3. "rpcinfo -p nfs_server" and "nmap -n -sT nfs_server"