linux-kernel - Re: [PATCH] init: Support mounting devices from kernel command line

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Message-ID: <CAOJsxLFEBknf8m5k6XOG=by_-avWT5P+ScoBBHfO0sgZbo_kSA@mail.gmail.com>
Date:	Mon, 18 Jul 2011 15:27:49 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Michael Tokarev <mjt@....msk.ru>
Cc:	Sasha Levin <levinsasha928@...il.com>,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Avi Kivity <avi@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] init: Support mounting devices from kernel command line

On Mon, Jul 18, 2011 at 3:15 PM, Michael Tokarev <mjt@....msk.ru> wrote:
>>> In /tools/kvm we are interested in such feature to allow us to automatically
>>> mount user home directory using virtio-9p from the host to the guest
>>> filesystem under '/hostfs'.
>
> Can't the same be done within initramfs just as easy?
>
> Long time ago when initramfs first appeared the plan was to,
> more or less, move all that mounting and root= handling
> functionality to userspae, and here we're adding more
> to kernel.  To me that sounds backwards...

Well, we can currently boot distro images using custom kernel combined
with distro initramfs. I'm not sure how we can inject our mount point
to initramfs as easily.

I don't think it's backwards progress but then again, I don't really
use initramfs or modules for that matter so maybe I'm just old
fashioned.

                        Pekka
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