how to debug kernel in qemu using ubuntu image

[Mulyadi Santosa]

Hi...

On Mon, May 16, 2011 at 13:40, Amirali Shambayati
<amirali.shambayati at gmail.com> wrote:
> I'm using linux-0.2.img image(which is a light linux image) to debug
> kernel using Qemu.

where do you get that image? and why don't you make one by yourself?

> I'm working on IO schedulers' optimization. As Qemu
> boots kernel, IO scheduler sends read requests to disk. Also by
> entering commands such as 'ls', it sends read requests. I'm looking
> for a way to send write requests.

"echo" command? "dd"?

>Thus I thought that using a
> benchmark which sends both read and write requests, is suitable, but
> as linux-0.2.img is a very simple and light image, it is almost
> impossible to setup heavy benchmarks on it.

could you explain what do you mean by "heavy"?

>So I want to use an ubuntu
> image instead. But I don't know where I should see kernel printks.

"see"? or "set"? I believe it's the latter, right?

what do you want to see through printk, anyway?

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com