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To: Rick Macklem <rmacklem@uoguelph.ca>
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Comments: In-reply-to Rick Macklem <rmacklem@uoguelph.ca>
	message dated "Tue, 29 Jun 2010 11:37:29 -0400."
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Date: Wed, 30 Jun 2010 09:14:37 +0300
From: Daniel Braniss <danny@cs.huji.ac.il>
Message-ID: <E1OTqZC-000Km1-07@kabab.cs.huji.ac.il>
Cc: freebsd-stable@freebsd.org, alexs@ulgsm.ru
Subject: Re: diskless boot, nfs server behind router 
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> 
> 
> On Mon, 28 Jun 2010, Daniel Braniss wrote:
> 
> >>
> >>
> >> On Mon, 28 Jun 2010, alexs@ulgsm.ru wrote:
> >>
> >>>
> >>>
> >>> kernel built with:
> >>> options     BOOTP          # Use BOOTP to obtain IP address/hostname
> >>> options     BOOTP_NFSROOT  # NFS mount root file system using BOOTP info
> >>> options     BOOTP_NFSV3
> >>>
> >> Try building a kernel without the above options, but with
> >> options NFS_ROOT
> >> specified. I think that's what most pxeboot users do and it was what
> >> I had assumed when I looked at the code.
> >>
> >> If that doesn't fix the problem...I haven't got a solution for you, rick
> >
> > I use:
> > options         BOOTP_NFSV3             # Use NFS v3 to NFS mount root
> >
> 
> Here's the critical snippet of code:
> #if defined(BOOTP_NFSROOT) && defined(BOOTP)
>  	bootpc_init();		/* use bootp to get nfs_diskless filled in */
> #elif defined(NFS_ROOT)
>  	nfs_setup_diskless();
> #endif
> 
> Just fyi, as you can see, unless you have BOOTP_NFSROOT and BOOTP options, 
> it does things the NFS_ROOT way and basically ignores BOOTP_NFSV3.
> (At least thats the way it looks to me. I've been tricked by convoluted
> code before:-)

you are correct, I missed the NFS_ROOT which is defined in GENERIC, and yes,
convoluted is an understatement :-)

danny