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Old 10-11-2009, 04:16 AM   #1
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Registered: Oct 2009
Posts: 1

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NFS mounting

Hi all,

I apologise if I posted in the wrong thread as I am not sure which category this falls under.

I am trying to get my arm board to obtain it root file system from the host my laptop but I encounter lots of problem and require some help.

what I have done:

- my arm board ip = (interface to host => ethernet cable and serial port)

- host Ethernet address =

On host
- added in /etc/hosts.allow


- added in /etc/hosts.deny


- added in /etc/exports

=> /home/EVA/Desktop/Project,sync,crossmnt)

- under system services:
turn on netfs, nfs, nfslock, rpcbind
turn off iptables
firewall disabled

chkconfig --list iptables
iptables 0: off 1: off 2: off 3: off 4: off 5: off 6: off

chkconfig --list ipchains
error reading information on service ipchains: No such file or directory

For client

- under linux kernel Kconfig
=> enabled NFS client support with NFS version 3 client protocol
=> enable “Root File System on NFS”

Kernel Commandline =
console=ttyS0,115200 root=/dev/nfs rw nfsroot=,nolock ip= off


When I run my kernel on the arm board it gives me the following

Kernel command line: console=ttyS0,115200 root=/dev/nfs/ rw nfsroot=,nolock ip= off
IP-Config: Failed to open eth0
IP-Config: No network devices available.
Looking up port of RPC 100003/2 on
rpcbind: server not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on
rpcbind: server not responding, timed out
Root-NFS: Unable to get mountd port number from server, using default
Root-NFS: Server returned error -5 while mounting /home/EVA
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "nfs/" or unknown-block(2,0)
Please append a correct "root=" boot option; here are the available partitions:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)

Can someone tell me what's wrong with my setup?

Old 10-19-2009, 03:53 PM   #2
Registered: Jan 2009
Location: wherever I can make a living
Distribution: OpenBSD / Debian / Ubuntu / Win7 / OpenVMS
Posts: 440

Rep: Reputation: 57
That looks to me like the initial problem is the network card isn't starting up properly. Are you using the correct drivers?


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