0006112: NFS or LiveNet Functionality Not Working Correctly with Dracut

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Date Submitted

Last Update

0006112

CentOS-6

dracut

public

2012-12-03 18:20

Reporter

kecalli

Priority

normal

Severity

major

Reproducibility

always

Status

new

Resolution

open

Platform

X86_64

OS Version

6.3

Product Version

6.3

Target Version

Fixed in Version

Summary

0006112: NFS or LiveNet Functionality Not Working Correctly with Dracut

Description

I am trying to create a new initrd to support booting diskless machines over the network. The DHCP/TFTP configuration is working as intended. The client gets and IP address and is able to download the initrd file and vmlinuz.

The problem appears when attempting to mount the root filesystem on the client. I have tried to use both the livenet module and nfs, but an error appears saying:

"don't know how to handle root=nfs (or root=live)"

I even tried downloading the newest version of dracut (024) and still experience this issue.

Steps To Reproduce

1. Setup DHCP/TFTP server to lease addresses.
2. Installed appropriate dracut RPMs (dracut, dracut-network) using Yum.
3. Ran the following command to make the initrd

dracut -v --force -a "livenet nfs" initrd.img

4. Configured /var/lib/tftpboot/linux-install/pxelinux.cfg/default to contain the following
----------
default rhel6

label rhel6
kernel vmlinuz
append initrd=initrd.img root=nfs:<serverip>:/exports/root rw
----------

I also tried the folowing for the livenet module

append initrd=initrd.img console=tty0 rd.shell rd.debug root=live:http://<serverip>/squashfs.img [^] rw

5. Created the /exports/root filesystem to include the base packages for CentOS

yum --releasever=6 groupinstall Base --installroot=/exports/root

6. Exported this via /exports/root via NFS

7. Squashed it to try with the livenet module

mksquashfs /exports/root /var/www/html/squashfs.img -e /var/www/html

Additional Information

I even tried uninstalling the version of dracut that is installed with CentOS and installing dracut 024 (including the network modules), but this did not make a difference.

At this point, I'm trying anyway to create a diskless system to boot over the network. If there is another way (besides dracut), let me know.

Issue History
Date Modified	Username	Field	Change
2012-12-03 18:20	kecalli	New Issue

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