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From: "Haven Skys" <hskys@frontbridge.com>
To: "'Matthias-Christian Ott'" <matthias.christian@tiscali.de>
Cc: <linux-kernel@vger.kernel.org>
Subject: RE: Help: kernel option root=/dev/nfs failing 2.6.10
Date: Wed, 16 Feb 2005 12:02:08 -0800
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Thanks.  Yes I have.
Here are a couple configuration options I have set:

CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y

CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
CONFIG_NFS_V4=y
CONFIG_NFS_DIRECTIO=y
CONFIG_NFSD=y
CONFIG_NFSD_V3=y
CONFIG_NFSD_V4=y
CONFIG_NFSD_TCP=y
CONFIG_ROOT_NFS=y

Everything is textbook really.  I followed several different examples and
still nothing works.


-----Original Message-----
From: linux-kernel-owner@vger.kernel.org
[mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of Matthias-Christian
Ott
Sent: Wednesday, February 16, 2005 11:09 AM
To: Haven Skys
Cc: linux-kernel@vger.kernel.org
Subject: Re: Help: kernel option root=/dev/nfs failing 2.6.10

Haven Skys wrote:

>I am attempting to create network bootable system with 2.6.10 and nfs and
am
>having trouble.
>
>I am using grub and the boot goes without a hitch until the kernel attempts
>to use the commands I've sent.
>
><SNIP from grub.conf>
>bootp
>root (nd)
>kernel (nd)/redhat-2.6.10/kernel root=/dev/nfs ip=bootp
>nfsroot=10.0.120.1:/diskless/redhat-2.6.10/
>baseos
></SNIP>
>
>Network booting machine X does fine until. It attempts to open the root
>device.
>
><SNIP>
>VFS: Cannot open root device "nfs" or unknown-block(0,255) Please append a
>correct "root=" boot option Kernel panic - not syncing: VFS: Unable to
mount
>root fs on unknown-block(0,255) </SNIP>
>
>It looks like the kernel isn't recognizing the virtual device /dev/nfs but
>I've enabled all the NFS options and everything is compiled into the
kernel.
>
>Any ideas?
>
>
>Thanks
>Haven
> 
> 
>
>
>
>
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Hi!
I did you follow the "tutorial" in Documentation/nfsroot.txt?

Matthias-Christian Ott
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