From owner-freebsd-current@FreeBSD.ORG  Wed Oct 23 13:38:15 2013
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTP id B288878B
 for <freebsd-current@freebsd.org>; Wed, 23 Oct 2013 13:38:15 +0000 (UTC)
 (envelope-from eric@vangyzen.net)
Received: from aussmtpmrkpc120.us.dell.com (aussmtpmrkpc120.us.dell.com
 [143.166.82.159]) (using TLSv1 with cipher RC4-SHA (128/128 bits))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id 76FCF2FE6
 for <freebsd-current@freebsd.org>; Wed, 23 Oct 2013 13:38:15 +0000 (UTC)
X-Loopcount0: from 64.238.244.148
X-IronPort-AV: E=Sophos;i="4.93,554,1378875600"; d="scan'208";a="49587592"
Message-ID: <5267D145.9070502@vangyzen.net>
Date: Wed, 23 Oct 2013 08:38:13 -0500
From: Eric van Gyzen <eric@vangyzen.net>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
 rv:17.0) Gecko/20130702 Thunderbird/17.0.7
MIME-Version: 1.0
To: Kimmo Paasiala <kpaasial@gmail.com>, 
 FreeBSD current <freebsd-current@freebsd.org>
Subject: Re: 10.0-BETA1 ZFS install -- /var/empty read-only
References: <5267CE4B.8050602@vangyzen.net>
 <CA+7WWSc51d2G7KfoP=sg1uL4cyKDGxxLikn5b2WNh8doAQDufQ@mail.gmail.com>
 <CA+7WWSc=Qr9oj=nJM7RxqFhzGCKaiDm8KJPPNbTEH9Q1rhvc=w@mail.gmail.com>
In-Reply-To: <CA+7WWSc=Qr9oj=nJM7RxqFhzGCKaiDm8KJPPNbTEH9Q1rhvc=w@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 23 Oct 2013 13:38:15 -0000

On 10/23/2013 08:30, Kimmo Paasiala wrote:
> On Wed, Oct 23, 2013 at 4:29 PM, Kimmo Paasiala <kpaasial@gmail.com> wrote:
>> On Wed, Oct 23, 2013 at 4:25 PM, Eric van Gyzen <eric@vangyzen.net> wrote:
>>> I just installed 10.0-BETA1 using the [very cool] new automatic ZFS
>>> option.  I noticed that /var/empty is not mounted read-only.  I suspect
>>> it could be.  I made it so, and sshd still seemed to work.
>>>
>>> Eric
>> I don't think there's a standard for how to break down the ZFS pool to
>> individual datasets. If the install made only a single dataset for
>> /var you would then effectively get a read-write /var/empty. The
> *The same applies*
>
>> applies if you install on UFS and don't assign a separate filesystem
>> for /var/empty like the default install does in fact.

There might not be a standard, but the installer does have a default
set, which includes a separate filesystem for /var/empty.  I imagine
this was done specifically to make it read-only.  Since that was not
done, it seems like an oversight.

Eric