Re: Root nfs

[Marty Connor <mdc@entity.com>]

There are a number of excellent web pages on netbooting that may assist 
you:

Here is an interesting page, which goes into some depth on netbooting 
issues:

   http://electron.et.tudelft.nl/~jdegoede/nfsroot-howto.html
   Somewhat technical, but clearly a lot of thought on the subject of
   diskless workstations, and the tradeoffs of various configurations.

You might also want to check out:

   http://www.disklessworkstations.com/
   They have a targeted solution, but if you check out the "download" 
section
   of the site, you will find a tar file containing a sample ".config"
   file which works with 2.2.x kernels.

And of course:

   http://www.slug.org.au/
   which contains lots of interesting background informations about boot
   roms and netbooting, and an extensive set of links that may be of 
   assistance.

   http://www.slug.org.au/etherboot/doc/html/README-3.html#ss3.1
   has instructions on how to use mknbi to create a tagged kernel image
   that the rom code will load properly. The mknbi is part of the netboot
   package, but is included with the etherboot package as well.
   (e.g.  mknbi -x -k zImage -o /tftpdir/vmlinuz.xterm )

In more specific answer to your question, here is an excerpt from a 
/usr/src/linux/.config file that I used recently to create a net-bootable 
kernel image, which I then used mk

  ...

  #
  # Network File Systems
  #
  CONFIG_CODA_FS=n
  CONFIG_NFS_FS=y
  CONFIG_ROOT_NFS=y
  # CONFIG_NFSD_SUN is not set
  ....

I hope this is helpful.

Regards,

Marty Connor

On 9/9/1999 8:15 AM davide.rao@gsmbox.com Davide Dao wrote:

>Hi to everybody ...
>Old linux kernels used to have NFSROOT option ... I'm having some
>fifficulty from 2.0.36 on ... (BTW I only noticed the option but never
>used it, nor wanted to, until now ...  that I need it ... cant find the
>frigging thing)




>Looked under /usr/src/linux/fs/nfs and found nfsroot.c   but found no
>reference to that in user menuconfig interface for configuring kernel ?
>Looked alco in .configure for something like NFSROOT but found nothing
>... even in the commented lines.
>tried also strings on kernel image to see if anyting like nfs ... but
>gor no useful info.
>what should I do in order not to see the kernel panic message "unable to
>mount root" while booting from network on diskless pc ?
>
>By
>Dave
>
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---
        Martin D. Connor, CEO & President, Entity Cyber, Inc.
       US Mail: P.O. Box 391827, Cambridge, MA 02139-0018  USA
   Voice: (617) 491-6935, Fax: (617) 491-7046, Net: mdc@entity.com
                     Web: http://www.entity.com/

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