nfs mount via usb0

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1

Hi, Gentlemen,

Anyone has luck to mount nfs from beagleboard? I connected my
host pc with beagle board via usb cable. Both sides show up
as usb0 Ethernet devices. I configured their ip addresses: host -
192.168.1.2, beagle - 192.168.1.1.

I can ping from beagle to host, host to beagle.
I can mount host nfs share from my 3rd computer.

But when I try to mount nfs share from beagle, I got the following error.
Help is appreciated!

Thanks,
Guo

[root@beagleboard /]# mount 192.168.1.2:/home/gtang host
<5>rpcbind: server localhost not responding, timed out
rpcbind: server localhost not responding, timed out
<4>RPC: failed to contact local rpcbind server (errno 5).
RPC: failed to contact local rpcbind server (errno 5).
<5>rpcbind: server localhost not responding, timed out
rpcbind: server localhost not responding, timed out
<4>RPC: failed to contact local rpcbind server (errno 5).
RPC: failed to contact local rpcbind server (errno 5).
<5>rpcbind: server localhost not responding, timed out
rpcbind: server localhost not responding, timed out
<4>RPC: failed to contact local rpcbind server (errno 5).
RPC: failed to contact local rpcbind server (errno 5).
mount: mounting 192.168.1.2:/home/gtang on host failed: Input/output error

2

Guo Tang <tangguo77@gmail.com> writes:

Hi, Gentlemen,

Anyone has luck to mount nfs from beagleboard? I connected my
host pc with beagle board via usb cable. Both sides show up
as usb0 Ethernet devices. I configured their ip addresses: host -
192.168.1.2, beagle - 192.168.1.1.

I can ping from beagle to host, host to beagle.
I can mount host nfs share from my 3rd computer.

But when I try to mount nfs share from beagle, I got the following error.
Help is appreciated!

Thanks,
Guo

[root@beagleboard /]# mount 192.168.1.2:/home/gtang host
<5>rpcbind: server localhost not responding, timed out
rpcbind: server localhost not responding, timed out

Did you start the portmap daemon on the beagle?

3

No. I don't. I am using the kernel and rootfs file from

http://code.google.com/p/beagleboard/wiki/BeagleBoardDiagnostics

I cannot find /usr/sbin/portmap in the mounted rootfs.

Thanks for pointing that out. I will try to find/compile a rootfs with
portmap next.

Thanks again,
Guo

4

Hi Guo,
What is Host operating system?
Is that you connected beagle board to Windows host and tried to ping
from both sides?

I downloaded Rootfs from
http://www.angstrom-distribution.org/demo/beagleboard/
and has binary "portmap" in it.

Regards,
Shivdas

5

Host is Fedora9. I will give angstrom Rootfs a try.

Thanks,
Guo

6

Hi, Shivdas,

My SD card is only 32MB. This rootfs is too big for me.
I finally fingured out how to make it working with rootfs in google code.
Just run mount with "-o nolock", and it works.

Now I have a nice development environment setup.
1. RS232 console.
2. TCP/IP over USB cable, then nfs mount the host file system.
3. cross compile in host, run directly in beagle via nfs mount.

Thanks,
Guo

7

Hi All,
please, find below procedure to mount root file system with Fedora.

1) Add file ifcfg-usb0 into /etc/sysconfig/network-scripts/

DEVICE=usb0

IPADDR=192.168.1.5
   NETMASK=255.255.255.0
   ONBOOT=yes
   TYPE=USB
   BOOTPROTO=none
   USERCTL=no
   IPV6INIT=no
   PEERDNS=yes

2) Add following line to /etc/exports
/data/target 192.168.1.1(rw,no_root_squash,no_all_squash,async)

3) Create directory /data/target. and copy your rootfile system to /
data/target

4) Type following commands
   #service rpcbind restart
   #service nfs restart

5) On BeagleBoard console type following command.
   OMAP3 beagleboard.org # setenv bootargs console=ttyS2,115200n8
root=/dev/nfs rw nfsroot=192.168.1.5:/data/target
ip=192.168.1.1::255.255.255.0 nolock,rsize=1024,wsize=1024 rootdelay=2

6) OMAP3 beagleboard.org # saveenv

7) OMAP3 beagleboard.org # mmcinit

8) OMAP3 beagleboard.org # fatload mmc 0 0x80300000 uImage

9) OMAP3 beagleboard.org # bootm 0x80300000

Hope, this will help to all.

Thanks and Regards,
Shivdas Gujare

8

Nice guide. I will try it out when I back home today.

By the way, do you want to mention in Fedora host, we need to enable NFS in firewall setting?
I think iptables is on by default in Fedora 9.

Thanks,
Guo