Kernel options to boot root over NFS (kernel-4.1.fc22/linux-4.1.3-200.fc22.x86_64)

Kernel options to boot root over NFS (kernel-4.1.fc22/linux-4.1.3-200.fc22.x86_64)

[Nestor Waldyd]

Hello,
I would like to compile a kernel bzImage in order to boot root over NFS. I am using the fedora kernel source package (kernel-4.1.fc22/linux-4.1.3-200.fc22.x86_64). What kernel options should i modify in Kernel Configuration in order to do so? (I have already configured both tftp and dhcp server, and PXELINUX)
Best Regards,
Nestor Waldyd?
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Kernel options to boot root over NFS (kernel-4.1.fc22/linux-4.1.3-200.fc22.x86_64)

[Chetan Nanda]

On Fri, Aug 7, 2015 at 6:10 AM, Nestor Waldyd <nwaldyd@yahoo.co.uk> wrote:

> Hello,
>
> I would like to compile a kernel bzImage in order to boot root over NFS. I
> am using the fedora kernel source package
> (kernel-4.1.fc22/linux-4.1.3-200.fc22.x86_64). What kernel options should i
> modify in Kernel Configuration in order to do so? (I have already
> configured both tftp and dhcp server, and PXELINUX)
>
> Best Regards,
>
> Nestor Waldyd
>

AFAIK, NFS client support needs to be selected as built-in during
configuration.
Rest is through kernel command line parameters.

There is a good description in 'Documentation/filesystems/nfs/nfsroot.txt'

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> ~Chetan Nanda
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Kernel options to boot root over NFS (kernel-4.1.fc22/linux-4.1.3-200.fc22.x86_64)

[Artem Savkov]

On Fri, Aug 07, 2015 at 12:40:16AM +0000, Nestor Waldyd wrote:
> Hello,
> I would like to compile a kernel bzImage in order to boot root over NFS. I am using the fedora kernel source package (kernel-4.1.fc22/linux-4.1.3-200.fc22.x86_64). What kernel options should i modify in Kernel Configuration in order to do so? (I have already configured both tftp and dhcp server, and PXELINUX)
> Best Regards,
> Nestor Waldyd?

You'll need to enable CONFIG_ROOT_NFS which requires CONFIG_IP_PNP and
CONFIG_NFS_FS to be enabled.