From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from list by lists.gnu.org with archive (Exim 4.71)
	id 1UjMgy-0001JZ-9q
	for mharc-grub-devel@gnu.org; Mon, 03 Jun 2013 00:48:24 -0400
Received: from eggs.gnu.org ([2001:4830:134:3::10]:58393)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <arvidjaar@gmail.com>) id 1UjMgw-0001JT-B3
	for grub-devel@gnu.org; Mon, 03 Jun 2013 00:48:23 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <arvidjaar@gmail.com>) id 1UjMgv-00024c-Go
	for grub-devel@gnu.org; Mon, 03 Jun 2013 00:48:22 -0400
Received: from mail-lb0-f172.google.com ([209.85.217.172]:51218)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <arvidjaar@gmail.com>) id 1UjMgv-00024P-A0
	for grub-devel@gnu.org; Mon, 03 Jun 2013 00:48:21 -0400
Received: by mail-lb0-f172.google.com with SMTP id p10so3370448lbi.31
	for <grub-devel@gnu.org>; Sun, 02 Jun 2013 21:48:19 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
	h=date:from:to:subject:message-id:x-mailer:mime-version:content-type
	:content-transfer-encoding;
	bh=lc+i8NIt5Uzv5KeUdtlzlNWfdS4i21w3da+z12ySgck=;
	b=lthU47PIxEho1yuXOqaaNiAIV+7ctjF/0/M5QQP8EutURNFyRBEzUsJt9z00zyWyAS
	L+UyxN+dDPCy8tTz+V4MIK5hDutiwh0AGmP0Hzbs39tu7OiNaiCEzNq2+s44TurUMI+F
	M2i4rcaNo9pMk6N9YY1JzKfQdJZoc+N+h5COHvU1ldQQrgKjmfQ0Bxv/16bXUhurnT3r
	q3gHlT/pTi0rusyGuzisTCPbfqBI5CBQHluwKkaxPl6urc2rcspNPehK7DRgDFK0uxcB
	8b29w1aXI0TR1+W0O4eu8vTx48yAidT/WYfSBtcQTwgGgZO8WUwnukVA/3hrg0T0b7ae
	KM1g==
X-Received: by 10.112.22.6 with SMTP id z6mr7584911lbe.43.1370234899576;
	Sun, 02 Jun 2013 21:48:19 -0700 (PDT)
Received: from opensuse.site (ppp79-139-160-84.pppoe.spdop.ru. [79.139.160.84])
	by mx.google.com with ESMTPSA id x3sm23652060lag.6.2013.06.02.21.48.18
	for <grub-devel@gnu.org> (version=SSLv3 cipher=RC4-SHA bits=128/128);
	Sun, 02 Jun 2013 21:48:19 -0700 (PDT)
Date: Mon, 3 Jun 2013 08:48:18 +0400
From: Andrey Borzenkov <arvidjaar@gmail.com>
To: grub-devel@gnu.org
Subject: grubenv vs. diskfilter
Message-ID: <20130603084818.74125432@opensuse.site>
X-Mailer: Claws Mail 3.9.0 (GTK+ 2.24.18; x86_64-suse-linux-gnu)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]
	[fuzzy]
X-Received-From: 209.85.217.172
X-BeenThere: grub-devel@gnu.org
X-Mailman-Version: 2.1.14
Precedence: list
Reply-To: The development of GNU GRUB <grub-devel@gnu.org>
List-Id: The development of GNU GRUB <grub-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/grub-devel>,
	<mailto:grub-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/grub-devel>
List-Post: <mailto:grub-devel@gnu.org>
List-Help: <mailto:grub-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/grub-devel>,
	<mailto:grub-devel-request@gnu.org?subject=subscribe>
X-List-Received-Date: Mon, 03 Jun 2013 04:48:23 -0000

While grub itself can be installed on diskfilter devices (LVM, Linux
MD, ...), diskfilter devices are read-only. As grubenv is automatically
assumed to be in /boot/grub, this makes it impossible to set variables
from within grub. So grub cannot reset boot once indicator, cannot save
currently selected menu entry etc.

Just looking for ideas here. Thank you.