[Qemu-devel] booting Netboot images created by mknbi

[Qemu-devel] booting Netboot images created by mknbi

[David Ahern]

Is it possible to run qemu with a netboot image -- something created by
mknbi? If so any notes on how to do that?

David

Re: [Qemu-devel] booting Netboot images created by mknbi

[Stefan Hajnoczi]

On Thu, Jul 15, 2010 at 5:09 PM, David Ahern <dsahern@gmail.com> wrote:
> Is it possible to run qemu with a netboot image -- something created by
> mknbi? If so any notes on how to do that?

Yes, QEMU ships with a gPXE network boot ROM.  Previously it shipped
with a legacy Etherboot boot ROM.

You can use the -boot n command-line option to enable the network bootloader.

Stefan

Re: [Qemu-devel] booting Netboot images created by mknbi

[David Ahern]

On 07/15/10 12:26, Stefan Hajnoczi wrote:
> On Thu, Jul 15, 2010 at 5:09 PM, David Ahern <dsahern@gmail.com> wrote:
>> Is it possible to run qemu with a netboot image -- something created by
>> mknbi? If so any notes on how to do that?
> 
> Yes, QEMU ships with a gPXE network boot ROM.  Previously it shipped
> with a legacy Etherboot boot ROM.
> 
> You can use the -boot n command-line option to enable the network bootloader.

I've tried that without success. DHCP is configured, and it gets an IP
address just fine. From there it's not clear what to do.

For pxe boot I tell it to load pxelinux.0. After that it retrieves the
mac addr file. For pxe boots the mac addr file is something like:

label linux
  kernel vmlimuz
  append initrd=initrd.img

Should the same work for netboot images? If so, is it:

   kernel image.nbi?

David

> 
> Stefan

[Qemu-devel] Re: booting Netboot images created by mknbi

[Jan Kiszka]

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David Ahern wrote:
> 
> On 07/15/10 12:26, Stefan Hajnoczi wrote:
>> On Thu, Jul 15, 2010 at 5:09 PM, David Ahern <dsahern@gmail.com> wrote:
>>> Is it possible to run qemu with a netboot image -- something created by
>>> mknbi? If so any notes on how to do that?
>> Yes, QEMU ships with a gPXE network boot ROM.  Previously it shipped
>> with a legacy Etherboot boot ROM.
>>
>> You can use the -boot n command-line option to enable the network bootloader.
> 
> I've tried that without success. DHCP is configured, and it gets an IP
> address just fine. From there it's not clear what to do.
> 
> For pxe boot I tell it to load pxelinux.0. After that it retrieves the
> mac addr file. For pxe boots the mac addr file is something like:
> 
> label linux
>   kernel vmlimuz
>   append initrd=initrd.img
> 
> Should the same work for netboot images? If so, is it:
> 
>    kernel image.nbi?
> 

-net user,bootfile=yourimage,tftp=/path/

or set up your own (real) dhcp and tftp servers when using bridged
networking.

Jan


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