[K12OSN] Network booting iMac clients

[Craig White]

On Tue, 2007-11-06 at 11:36 -0800, Bill Moseley wrote:
> I'm not using K12LTSP, but rather Edubuntu at this time, but a number
> of people have noted that the K12LTSP project has good support for
> booting powerpc clients -- and that's where I'm having trouble.
> 
> I've got an i386 server and both i386 and powerpc clients.  I've
> watched both boot using Wireshark.
> 
> With the i386 I see the DHCP exchange and the boot file name returned
> /ltsp/i386/pxelinux.0.  I then see the client do a request for that
> file using TFTP.
> 
> With the powerpc clients I see DHCP go through the same process,
> except it returns Boot file name: /ltsp/powerpc/yaboot.  But then I
> never see the powerpc client do a TFTP request.
> 
> Is there an extra parameter that must be passed from DHCPD back to the
> client that says fetch the file?
> 
> I'm using a recent G4 powerpc iBook and holding down "n" when booting.
> I get the flashing network icon.
> 
> I also tried the option+command+o+f to get to the Open Firmware
> screen. There I entered:
> 
>     boot enet: 0
> 
> and watched the same DHCPD interaction with Wireshark but not TFPT
> request from the client.
> 
> The DHCPD server is returning the correct "Next Server" IP address,
> and also "Server Identifier" with the same IP.
> 
> Now Open Firmware did time out and respond:
> 
>   BOOTP/BSOP failed: no FILENAME specified can't open: enet:0
> 
> But Wireshark is showing the file name.
> 
> One minor thing that didn't seem right is after a while the iBook
> sent a DHCP Inform and the dhcpd server responded with DHCP ACK but
> with a filename /ltsp/i386/nbi.img.
> 
> 
> 
> I tried taking nice to the Mac, and swearing a bit, too, but it
> didn't respond.
> 
> 
> Here's my dhcpd.conf file:
> 
>     authoritative;
> 
>     subnet 192.168.0.0 netmask 255.255.255.0 {
>         range 192.168.0.20 192.168.0.250;
>         option domain-name "example.com";
>         option domain-name-servers 192.168.0.1;
>         option broadcast-address 192.168.0.255;
>         option routers 192.168.0.1;
>         option subnet-mask 255.255.255.0;
> 
>         option root-path "/opt/ltsp/i386";
>         if substring( option vendor-class-identifier, 0, 9 ) = "PXEClient" {
>             filename "/ltsp/i386/pxelinux.0";
>         } else {
>             filename "/ltsp/i386/nbi.img";
>         }
>     }
> 
>     group {
>         option root-path "/opt/ltsp/powerpc";
>         filename "/ltsp/powerpc/yaboot";
> 
>         # Define powerpc machines by their MAC address.
> 
>         host ibook {
>             hardware ethernet 00:14:51:32:BA:44;
>             fixed-address 192.168.0.15;
>         }
> 
>         host mac1 {
>             hardware ethernet 00:30:65:f3:50:58;
>         }
>     }
----
mac kernel (as far as I can tell) must be in root directory of tftp
server. I have never gotten it to work anywhere else.

also my global section of dhcpd.conf includes...

option option-128 code 128 = string;
option option-129 code 129 = text;
option dhcp-parameter-request-list 1,3,6,15,17,43,44,46,60;

then here's what a relevant section of my dhcpd looks like for mac
client(s)

group mac-clients {
        ddns-updates on;
        next-server 192.168.3.11;
        option root-path "192.168.3.11:/opt/ltsp/ppc";
        filename "yaboot";
        # install client
        host mac-linux-1 {
                option vendor-class-identifier "AAPLBSDPC";
                option vendor-encapsulated-options \
01:01:02:08:04:01:00:00:01:82:
                05:             # length
                69:6d:61:63:34; # hostname
                option option-128  e4:45:74:68:00:00;
                option option-129  "NIC=ne IO=0x300";

                hardware ethernet 00:03:93:7f:5d:1a;
                fixed-address 192.168.3.47;
                option host-name "mac-linux-1";
                ddns-hostname "mac-linux-1";
                }
}

Craig