boot the micro 2440 with NFS

Hi all,

I want to make my micro 2440 board boot with NFS. 
my u-boot configuration is:
bootargs=console=ttySAC0,115200 noinitrd init=/sbin/init mini2440=1tb
root=/dev/nfs rw nfsroot=192.168.1.2:/export/fs
ip=192.168.1.85:192.168.1.1::255.255.255.0:mini2440:eth0:off

I am able to read the uImage from NFS server and boot. But when it mount to
file system, the following warning occur:

Initializing random number generator... read-only file system
detected...done
Failed to create file
'/usr/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache.6PRTTS': Read-only file
system
Starting network...
ip: RTNETLINK answers: File exists

Welcome to Buildroot
buildroot login: 


Why is the filesystem readonly? In the bootargs I already put the rw
option.
I can not login to the system. It keep asking me for the root password that
I don't know.

How can I solve this problem

My /ect/export file is:
/export 192.168.1.0/24 *(rw,fsid=0,insecure,no_subtree_check,async)
/export/fs 192.168.1.0/24
*(rw,fsid=0,insecure,no_subtree_check,async,no_root_squash)
/export/kernel 192.168.1.0/24 *(rw,fsid=0,insecure,no_subtree_check,async)

Thank you very much

Firstly:

You have to have your NFS set up correctly. (I am running Ubuntu 10.10 so
your mileage may very - so check out the man pages accordingly).

I think your /etc/export contents are incorrect and should be:

/export        192.168.1.*/24(rw,sync,no_subtree_check)
/export/fs     192.168.1.*/24(rw,sync,no_subtree_check)
/export/kernel 192.168.1.*/24(rw,sync,no_subtree_check)

make the above changes. As root "exportfs -a" and then check using another
linux or windoze system that you can indeed mount an exported file system
across.

Secondly:
Your u-boot configuration seems OK, but you will need to double check it.

Hope this assists.
Cheers.