From owner-freebsd-hackers  Sat Nov  4 11:48:20 2000
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From: John Hay <jhay@icomtek.csir.co.za>
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Subject: Re: dhcp boot was: Re: diskless workstation
In-Reply-To: <200011041928.LAA62802@whistle.com> from Doug Ambrisko at "Nov 4, 2000 11:28:02 am"
To: ambrisko@whistle.com (Doug Ambrisko)
Date: Sat, 4 Nov 2000 21:47:59 +0200 (SAT)
Cc: jhay@icomtek.csir.co.za (John Hay),
	msmith@FreeBSD.ORG (Mike Smith), danny@cs.huji.ac.il (Danny Braniss),
	freebsd-hackers@FreeBSD.ORG
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> | > You don't, it is done via the bootp or dhcp record option 128 for example
> | >           option option-128 "192.168.2.254:/usr/work/netboot";
> | > You then have to make the swap file in that directory of format
> | >       swap.<IP of client>
> | > Use dd to create the file by copying /dev/zero for the size you want.
> | > 
> | > Note during boot up the kernel will tell you what it is using for 
> | > swap via this request.
> | 
> | The option-128 confuse the pxeboot program. If I put
> | 
> | option root-path "/export/diskless";
> | option option-128 "10.1.2.3:/export/shark";
> | 
> | in the dhcpd.conf file, pxeboot tries to mount /export/sharkM-^[^B-i?
> | as the root filesystem. Removing the option-128 line at least get me to
> | boot albeit without swap.
> 
> Root path should have the IP address of the server such as:
>            option root-path "192.168.2.254:/usr/home/ambrisko/netboot";
> 
> Then in boot messages you should see:
> 	rootfs is 192.168.2.254:/usr/home/ambrisko/netboot
> 	swapfs is 192.168.2.254:/usr/work/netboot
> 

Yes, you are right. Putting the ip number in the root-path cures the
pxeboot failure. But is still only configure the NFS ROOT according
to the kernel's output. I had a look at the pxe code in
/sys/boot/i386/libi386/pxe.c where pxeboot is built from and in
/sys/i386/i386/autoconf.c which is the kernel side and it looks like
they don't do anything about swap. There is a /* XXX set up swap? */
placeholder though. :-)

John
-- 
John Hay -- John.Hay@icomtek.csir.co.za


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