Re: [Qemu-devel] Netboot happens twice (first fail) when using etherboot ROMs

[Stefan Hajnoczi <stefanha@gmail.com>]

On Sun, Aug 1, 2010 at 10:44 AM, Michael Tokarev <mjt@tls.msk.ru> wrote:
> I wonder why with etherboot ROMs, the network boot
> happens two times (0.12.x), like this:
>
> -----
>  Starting SeaBIOS (version 0.5.1-20100801_125707-gandalf)
>
>  Booting from virtio-net.zrom 5.4.4 (GPL) ether...
>  ROM segment 0xc900 length 0x8000 reloc 0x00000000
>  Etherboot 5.4.4 (GPL) http://etherboot.org
>  Drivers: VIRTIO-NET   Images: NBI ELF PXE   Exports: PXE
>  Protocols: DHCP TFTP
>  Relocating _text from: [00087780,0009f310) to [07ee8470,07f00000)
>  Boot from (N)etwork or (Q)uit?
>
>  Probing pci nic...
>  Probing isa nic...
>  <sleep>
>  Boot from (N)etwork or (Q)uit?
>
>  Probing pci nic...
>  [virtio-net]I/O address 0x0000c020, IRQ #11
>  MAC address 52:54:00:12:34:56
>  Searching for server (DHCP)....
> -----
>
> The boot ROMs supplied with the source works as expected.
>
> What's the difference?  Is gpxe behaves differently, or
> is that a difference in build options?

Etherboot and gPXE are different codebases.  gPXE was forked from
Etherboot around 2005 and is now very different.  The Etherboot and
gPXE behavior cannot always be compared, they are not meant to work
the same.

CCed gPXE mailing list.

Stefan

> (This applies to both qemu and qemu-kvm).
>
> Thanks!
>
> /mjt
>
>