Re: Help: kernel option root=/dev/nfs failing 2.6.10

[Matthias-Christian Ott]

Haven Skys wrote:

> 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@xxxxxxxxxxxxxxx
> [mailto:linux-kernel-owner@xxxxxxxxxxxxxxx] On Behalf Of Matthias-Christian
> Ott
> Sent: Wednesday, February 16, 2005 11:09 AM
> To: Haven Skys
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> 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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>
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> >
> >
> >    
> Hi!
> I did you follow the "tutorial" in Documentation/nfsroot.txt?
>
> Matthias-Christian Ott
> -
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>  
Your config looks good. Try to give the kernel the "nfsroot=" parameters 
and try to boot from the harddisk to see if the client really gets the 
bootp information correctly.

Matthias-Christian Ott
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