Loading Ubuntu Server over TFTP, getting Kernel Panic on client.

[MGertz]

Hi guys.

I'm new here at this forum, so i have i have posted the right place.

I have a tried setting up a TFTP server, and that part actually works.

I have been following this guide.
http://www.stevekelly.eu/cluster.shtml
But someplaces i have been editing a little bit.

my pxelinux.cfg/default file looks like this.

LABEL Ubuntu Server CloudNode
DEFAULT vmlinuz-3.5.0-23-generic
APPEND root=dev/nfs initrd=initrd.img nfsroot=10.0.0.200:/NFSROOT/ ip=dhcp rw

And the clients loads the vmlinuz-3.5.0-23-generic

But under the boot process they stalls with this error.

VFS: Cannot open root device "(null)" or unknown-block(2,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
0b00      1048575  sr0   driver: sr
Kernel panic - not syncing: NFS: Unable to mount root fs on unknown-block(2,0)
Pid: 1, comm: swapper/0 Net tainted 3.5.0-23-generic #35~precise1-Ubuntu

I hope you guys can help me fix this issue.

[matt_symes]

Hi

root=dev/nfs

Try this.

root=/dev/nfs

Kind regards

[MGertz]

That didnt fix it.

[matt_symes]

Hi

I am setting up a pxe boot server today, something i have been meaning to to do for an age now, as i want the ability to boot a live CD for computers that are having trouble booting from USB or CD/DVD for various reasons. I'm currently downloading the alternate ISO and lubuntu 12.10 as a test environment.

I am following these guides.

http://www.serenux.com/2010/05/howto...ubuntu-server/

and

http://www.serenux.com/2010/05/howto...-a-pxe-server/

and the official pxeboot help from help.ubuntu.com.

I'll report back on how i get on. If i can get it working then hopefully that'll provide some insight into your problem.

Kind regards