Re: Root path and booting from a menu

[James Pearson <james-p@moving-picture.co.uk>]

After a lot of digging about, I've managed to answer my own question - I
added "nfsroot=/disk1/disklessroot/rftest1_root" to the menu item's
"cmdline". Unfortunately the documentation doesn't seem to make it clear
what bootp tags do or do not get passed to the kernel when you use an
extension file ... 

James Pearson 



> 
> I'm currently using etherboot-4.4.2 and bootp-2.4 to boot diskless Linux
> machines - which works fine. I'm using the following /etc/bootptab:
> 
> .global.prof:\
>         :sm=255.255.0.0:\
>         :ds=172.16.3.1:\
>         :gw=172.16.2.1:\
>         :ht=ethernet:\
>         :hd=/disk1/disklessroot/kernels:
> 
> rftest1:\
>         :ha=00902759cb91:\
>         :ip=172.16.60.1:\
>         :bf=diskless_1_up:\
>         :rp=/disk1/disklessroot/rftest1_root:\
>         :tc=.global.prof:
> 
> Root is mounted from /disk1/disklessroot/rftest1_root as given by "rp="
> above.
> 
> However, I want to use "menu" capabilities to pass parameters to the
> kernel. So I've added the following to /etc/bootptab:
> 
> rftest1:\
>         :ha=00902759cb91:\
>         :ip=172.16.60.1:\
>         :bf=diskless_1_up:\
>         :rp=/disk1/disklessroot/rftest1_root:\
>         :T128=E44574680000:\
>         :T160="timeout=10:default=192:":\
>         :T192="linux:::/disk1/disklessroot/kernels/diskless_1_up":\
>         :T193="linux
> single:::/disk1/disklessroot/kernels/diskless_1_up:::single":\
>         :ef=/disk1/disklessroot/rftest1_menu.ext:\
>         :tc=.global.prof:
> 
> and run bootpef to generate the extensions file.
> 
> However, when the system boots the kernel, it tries to mount root from
> /tftpboot/172.16.60.1 and fails - as it doesn't exist. i.e. it appears
> to ignore the rp= tag in bootptab. I notice that the entry for rp does
> appear in the extensions file.
> 
> Copying the client's root to /tftpboot/172.16.60.1 works fine.
> 
> Is there a way to use an extensions file and have a non-default root
> path?
> 
> Thanks
> 
> James Pearson
===========================================================================
This Mail was sent to netboot mailing list by:
James Pearson <james-p@moving-picture.co.uk>
To get help about this list, send a mail with 'help' as the only string in
it's body to majordomo@baghira.han.de. If you have problems with this list,
send a mail to netboot-owner@baghira.han.de.