linux-kernel - Re: pivot_root alternative

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Message-ID: <467EE48D.5010204@arndnet.de>
Date:	Sun, 24 Jun 2007 23:39:25 +0200
From:	Arnd Hannemann <arnd@...dnet.de>
To:	Jan Engelhardt <jengelh@...putergmbh.de>
CC:	Salvatore De Paolis <depaolis.salvatore@...ero.it>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: pivot_root alternative

Jan Engelhardt schrieb:
> On Jun 24 2007 23:27, Salvatore De Paolis wrote:
>> i built the kernel with a busybox initramfs which runs from a usb stick. While
>> i boot i need to mount the real root and i'm using pivot_root.
>> Pivot_root . old-root return to me an "Invalid argument" error and googling i
>> found here http://lkml.org/lkml/2005/10/8/17 that pivot_root should be avoided.
>> I want to ask now what i should do to switch to a real root?
> 
> use run-init from klibc?

However be aware of the limitation of run-init:
It only works for direct childs of root directory
/mnt/newroot won't work
/newroot should work ;-)

Good luck,
Arnd
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