Difference between revisions of "Network File System configuration"

Revision as of 22:30, 1 January 2007

Introduction

On this page, you will find usefull informations to configure your Host or Target network

NFS server on your devt Host

Installation

• On Fedora NFS is part of your distribution so you normally don't need to install it.
• On Ubuntu/Kubuntu:

apt-get install nfs-user-server

Configuration

You have to configure the directory where you will store the files you want to share accross the network. For that you have to modify the /etc/exports file (for example):

# Directory for Armadeus:
/local/export     192.168.0.0/255.255.0.0(ro,no_root_squash,sync)

(In that case your Host will authorize all client from the subnet 192.168.*.* to access /local/export in read only mode)

Then restart your NFS server:

• On Fedora:

# /sbin/service nfs restart

Next time you boot, you can check your NFS server status with:

# /sbin/service nfs status

and if not started then:

# /sbin/service nfs start

• On Ubuntu/Kubuntu:

/etc/init.d/nfs-user-server restart

Next time you boot, you can check your NFS server status with: System Settings->System services

• On OpenSUSE

/etc/init.d/nfsserver restart

On your Armadeus target:

Mount the NFS partition manually

- create a mount point (for example):

# mkdir -p /mnt/host

- mount it (for example):

# mount -t nfs 192.168.0.2:/local/export /mnt/host

192.168.0.2 is your Host IP address and /local/export the name of your Host directory you want to mount.

How to mount the NFS partition at each boot

- login at the Armadeus Card as root - open file /etc/fstab and add this line:

<host-ip>:/<path-to-shared-folder> /mnt/<path-to-mount-folder> nfs hard,intr,rsize=8192,wsize=8192 0 0

example:

192.168.0.2:/local/export /mnt/host nfs hard,intr,rsize=8192,wsize=8192 0 0

- open file /etc/inittab and add the line in bold between mount -t and mount -a (respect the order !):

...
null::sysinit:/bin/mount -o remount,rw /
null::sysinit:/bin/mount -t proc proc /proc
null::sysinit:/sbin/portmap 
null::sysinit:/bin/mount -a
null::sysinit:/bin/hostname -F /etc/hostname
...

- reboot the Armadeus Card

reboot

- Verify and enjoy the result

df
ls /mnt/host

When you have a problem: verify that the NFS server is running on the host

Troubleshooting:

1] If nfsd and mountd daemon are not running on your Host, then you will get a message like:

# mount: RPC: Program not registered

In that case, restart the NFS service on your Host (see above) 2] To successfully mount a NFS drive, portmap daemon should be running on your target, if not system will hang during some minutes when you launch the mount !! To check if portmap is running, look at the running processes:

# ps faux

If portmap is not listed, then launch it manually:

# /etc/init.d/S14portmap

Required Packages:

• portmap (buildroot)
• nfs (busybox)
• nfs support (linux)

TFTP Server under Windows:

For those who want to transfer some files from Windows (kernel image / root fs), a small and FREE tftp server is available here: http://tftpd32.jounin.net/

NFS Server under Windows:

For those who want to use the NFS service on Windows, a small and FREE NFS server is available here: http://www.freedownloadscenter.com/Utilities/Misc__Utilities/nfsAxe.html

Links

• http://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.8.

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