From owner-freebsd-current  Sat Feb 22 23:40:32 2003
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To: Matthew Dillon <dillon@apollo.backplane.com>
Cc: Chris Shenton <chris@shenton.org>, current@FreeBSD.ORG
Subject: Re: Diskless: 5.0R scripts, boot, NFS mount problems I didn't have in 
 4.7S
In-Reply-To: Message from Matthew Dillon <dillon@apollo.backplane.com> 
   of "Sat, 22 Feb 2003 17:46:26 PST." <200302230146.h1N1kQrZ024560@apollo.backplane.com> 
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Date: Sun, 23 Feb 2003 09:40:24 +0200
From: Danny Braniss <danny@cs.huji.ac.il>
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I have been using diskless boots for some time, and selecting different
kernels is very easy, see
	ftp://ftp.cs.huji.ac.il/users/danny/freebsd/diskless-boot
danny

> 
> :Seems like diskless clients would have to have separate kernels with
> :the "option BOOTP" while any servers must omit this option.
> :
> :How do you keep them separate? or am I missing something fundamental?
> :
> :Thanks.
> 
>     You can compile pxeboot with the LOADER_TFTP_SUPPORT=YES option.
>     Add LOADER_TFTP_SUPPORT=YES to your /etc/make.conf and recompile
>     /usr/src/sys/boot (make clean; make obj; make; make install from
>     within /usr/src/sys/boot).
> 
>     If you do this pxeboot will attempt to load the kernel via TFTP
>     instead of via NFS.  You then put your kernel in /tftpboot right along
>     side a copy of pxeboot.
> 
>     This allows you to netboot a different kernel then the one in the 
>     server's root directory.
> 
> :PS: could you show me your dhcpd.conf so I can see how you're
> :    specifying your root filesystem? Mine's currently:
> :	option root-path	"192.168.255.185:/";
> 
> subnet 216.240.41.0 netmask 255.255.255.192 {
>     range ...;
> 
>     server-name "apollo.backplane.com";
>     option subnet-mask 255.255.255.192;
>     option domain-name-servers 216.240.41.2;
>     option domain-name "backplane.com";
>     option broadcast-address 216.240.41.63;
>     option routers 216.240.41.15;
> 
>     group {
> 	filename "pxeboot";
> 	option root-path "216.240.41.2:/";
> 
> 	host net1 {
> # Alternative server to boot -current
> #	    option root-path "216.240.41.12:/";
> #	    next-server 216.240.41.12;
> 	    hardware ethernet ...;
> 	}
> 	host net2 {
> 	    hardware ethernet ...;
> 	}
> 	...
>     }
> }
> 
> 					-Matt
> 					Matthew Dillon 
> 					<dillon@backplane.com>
> 
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