linux-kernel - Re: Can initramfs be mounted read-only?

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Message-ID:  <loom.20090812T220624-312@post.gmane.org>
Date:	Wed, 12 Aug 2009 22:10:21 +0000 (UTC)
From:	David Wuertele <dave+gmane@...rtele.com>
To:	linux-kernel@...r.kernel.org
Subject:  Re: Can initramfs be mounted read-only?

Alan Jenkins <sourcejedi.lkml <at> googlemail.com> writes:

>> I've been trying to create a system with a read-only rootfs using initramfs,
> 
> Changing this could potentially break a lot of systems.  At least
> Debian has "ro" as a default boot option, and it uses an initramfs by
> default.

I don't want to change it for everybody, just my own system.  Since I'm not
using Debian, or any other distribution, I can handle the consequences.

>> Is it possible to
>> mount an initramfs read-only?
>
> Have you tried running "mount / -oremount,ro" in an init script?

Yes, and it works (the rootfs appears read-only after doing this).
I was hoping to get it to be read-only before init gets run.

Dave

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