Why my NFS not work

You have to make sure you have allowed access to your nfs directory on the host machine by specifying it in /etc/exports.

Normally you export a different directory other than /mnt/nfs.

If you want to export /home/user from your host machine and your nios2 IP address is "w.x.y.z", then try the following in etc exports.

/home/user w.x.y.z(rw,no_root_squash)

You then might have to restart the nfs server on your host machine.

On the nios2, try using the following line in your /etc/rc script, or manually type it in after logging in.

/bin/mount -t nfs 192.168.0.7:/home/user /mnt/nfs -n -o nolock &

Hopefully this helps.

I do it as you tell me ,but my NFS still not work ,why?

The Nios information as follows:# nfs warning :mount version older than Kernel# NFS: NFSv3 not supported# mount:PRC:Time out

Hi su-30mk,

> The Nios information as follows:

># nfs warning :mount version older than Kernel

># NFS: NFSv3 not supported

># mount:PRC:Time out

This looks like portmap is not running. Make sure you

have RPC and the portmapper started prior to running

the mount.

Regards,

--Scott

BTW: if you need to do simple NFS testing (file download), you

can use the u-boot boot monitor.

Hi su-30mk,

> an you give me some example and tell me how let portmap runing

You can simply enter the command:

$ portmap

I haven't used NFS with the Nios-II uClinux yet. I'm assuming that it

is indeed available with the other network apps (it should be if the

nfs server is available).

Regards,

--Scott

> but system not support portmap

You can try building portmap using the sources from uClinux.org.

Regards,

--Scott

I have a related problem. I have a uKit board with a Cyclone running uClinux.

I am using the configuration stated in the first reply:

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

/bin/mount -t nfs 192.168.0.7:/home/user /mnt/nfs -n -o nolock &[/b]

--- Quote End ---

When I run this, I get the warning:

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

# nfs warning :mount version older than Kernel[/b]

--- Quote End ---

I am able to browse through the mounted directory to a point, but if I try to copy "cp" anything from the /mnt/nfs over to my ramdisk at /tmp, then it hangs with no error messages. This also occurs if I try to run something directly from the nfs mounted directory.

My kernel that is on my host machine is older, it is a 2.4.20 kernel. I&#39;m guessing that is why I get the warning. However, should this really be a problem?

I am hoping that I can use nfs to speed up my development cycle, but so far it hasn&#39;t worked out for me.

Does anyone have any ideas on why it would be unstable?