linux-kernel - Switch between IO schedulers at runtime

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Message-ID: <AANLkTikLQ_nd3XAeR+nj2fRF8hPLJLn59OO=j6noVsZH@mail.gmail.com>
Date:	Mon, 14 Mar 2011 14:18:50 +0330
From:	Amirali Shambayati <amirali.shambayati@...il.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Switch between IO schedulers at runtime

Dear all,

I'm using Qemu + GDB to debug my new IO scheduler code. I need to be
able to switch between IO schedulers at runtime. As much as I know and
I've tested it in my system, I should echo 'IO-sched name'>
/sys/block/sda/queue/scheduler but the linux image I use(linux-0.2.img
Small Linux disk image containing a 2.6.20 Linux kernel, X11 and
various utilities to test QEMU ) doesn't have "sys folder". Anybody
knows another way to switch IO schedulers runtime?

Any help is appreciated.

Regards,

-- 
Amirali Shambayati
Bachelor Student
Computer Engineering Department
Sharif University of Technology
Tehran, Iran
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