---------- Forwarded message ---------- From: Amirali Shambayati <amirali.shambayati@gmail.com> Date: Tue, May 10, 2011 at 3:11 PM Subject: how to debug kernel in qemu using ubuntu image To: Linux Kernel <linux-kernel@vger.kernel.org> Hello all, I asked my question in "linux kernel" mailing list, and I was suggested to forward it to this mailing list. I'm using linux-0.2.img image(which is a light linux image) to debug kernel using Qemu. 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. 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. So I want to use an ubuntu image instead. But I don't know where I should see kernel printks. Thanks in advance Regards, -- Amirali Shambayati Bachelor Student Computer Engineering Department Sharif University of Technology Tehran, Iran -- Amirali Shambayati Bachelor Student Computer Engineering Department Sharif University of Technology Tehran, Iran