From owner-freebsd-doc@FreeBSD.ORG Mon Jun 24 15:05:33 2013 Return-Path: Delivered-To: freebsd-doc@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id C11C289F for ; Mon, 24 Jun 2013 15:05:33 +0000 (UTC) (envelope-from kaduk@mit.edu) Received: from dmz-mailsec-scanner-2.mit.edu (dmz-mailsec-scanner-2.mit.edu [18.9.25.13]) by mx1.freebsd.org (Postfix) with ESMTP id 7C55B1CA4 for ; Mon, 24 Jun 2013 15:05:33 +0000 (UTC) X-AuditID: 1209190d-b7f078e000000937-4e-51c85f097c31 Received: from mailhub-auth-4.mit.edu ( [18.7.62.39]) by dmz-mailsec-scanner-2.mit.edu (Symantec Messaging Gateway) with SMTP id 5E.97.02359.90F58C15; Mon, 24 Jun 2013 11:00:25 -0400 (EDT) Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by mailhub-auth-4.mit.edu (8.13.8/8.9.2) with ESMTP id r5OF0OU0028648; Mon, 24 Jun 2013 11:00:25 -0400 Received: from multics.mit.edu (system-low-sipb.mit.edu [18.187.2.37]) (authenticated bits=56) (User authenticated as kaduk@ATHENA.MIT.EDU) by outgoing.mit.edu (8.13.8/8.12.4) with ESMTP id r5OF0MPN022370 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 24 Jun 2013 11:00:24 -0400 Received: (from kaduk@localhost) by multics.mit.edu (8.12.9.20060308) id r5OF0Mee007305; Mon, 24 Jun 2013 11:00:22 -0400 (EDT) Date: Mon, 24 Jun 2013 11:00:22 -0400 (EDT) From: Benjamin Kaduk To: Chip Senkbeil Subject: Re: Misprint in Architecture Handbook? In-Reply-To: Message-ID: References: User-Agent: Alpine 1.10 (GSO 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrNIsWRmVeSWpSXmKPExsUixG6nrssVfyLQ4O1SVovnyx6wWpw608Xq wOQx49N8Fo+ds+6yBzBFcdmkpOZklqUW6dslcGWc+7yepeA1f8XxK0ENjI94uhg5OSQETCS2 /17DCmGLSVy4t56ti5GLQ0hgH6PEnX3fWEASQgIbGSXmbYmASBxiklg0cRsbRKKBUWL5IrBJ LALaEu3f9jGC2GwCKhIz32wEqxEBiu/ftZwdxGYWkJZoWL+ZCcQWFtCX+DehnxnE5hQIlPi7 7juQzcHBK+AocepvPMSuqYwSe2ecB+sVFdCRWL1/CthBvAKCEidnPmGBmGkpce7PdbYJjIKz kKRmIUktYGRaxSibklulm5uYmVOcmqxbnJyYl5dapGukl5tZopeaUrqJERSmnJK8OxjfHVQ6 xCjAwajEwzsj5kSgEGtiWXFl7iFGSQ4mJVHeM1FAIb6k/JTKjMTijPii0pzU4kOMEhzMSiK8 oSJAOd6UxMqq1KJ8mJQ0B4uSOK/orZ2BQgLpiSWp2ampBalFMFkZDg4lCd6tsUCNgkWp6akV aZk5JQhpJg5OkOE8QMPPgdTwFhck5hZnpkPkTzEqSonzOoEcKQCSyCjNg+uFpZFXjOJArwjz zgJp5wGmILjuV0CDmYAGT049DjK4JBEhJdXAuLbmhZbr10nzKrbzr7fZwDzvRmzYASXl5Lj1 16t6pOYkKgXU/W47eWQV2+SrPxzeFDja//URcN53gJFx0oOnX2bZPH8wVXN7n6p2kKZJt0vt Bj+JnTuu9NhteZAd3TjV3rKiyu7H8blNr7sSPpg53LnKt3Gd8PP5IWvXd96VyJx+OU0kd8eC T0osxRmJhlrMRcWJADDlrv3+AgAA Cc: freebsd-doc@freebsd.org X-BeenThere: freebsd-doc@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Documentation project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Jun 2013 15:05:33 -0000 On Sun, 23 Jun 2013, Chip Senkbeil wrote: > Hello, > > I was taking a look at the guide for SSDs and FreeBSD ( > http://www.freebsd.org/doc/en/articles/solid-state/index.html) and think > that there "might" be some old instructions. On the second page ( > http://www.freebsd.org/doc/en/articles/solid-state/kernel.html), the > instructions say to add "options MFS", "options MD_ROOT", and > "pseudo-device md" to your kernel configuration. I've been searching > briefly (very briefly) and came across a fairly old post ( > http://lists.freebsd.org/pipermail/freebsd-stable/2005-May/015115.html) > claiming that pseudo-device is no longer used or is at least deprecated. > Trying to add that option gave me a syntax error; so, I'm going out on a > limb to say that the option isn't supported? I later found in the generic > kernel that the line "device md" is already in place with the comment > "Pseudo devices." > > Another issue (this may or may not be a fault of my own) is regarding > "options MFS" as a suggested addition to the configuration. Attempt to > include the option and build the kernel yields an unknown option error. > I'll be digging around, but if this is blatantly no longer the correct > option, please let me know! > > The final option regarding MD_ROOT was already included in the generic > kernel; so, I guess that's fine to still reference. > > I haven't taken a look at the later pages since I wasn't able to build the > kernel. Since I'm not very familiar with FreeBSD, I wouldn't know what to > look for in terms of outdated material. If this page is indeed out of date, > it might be worth adding to the backlog to take a look at the rest of the > SSD material to ensure it isn't old. Hi Chip, I believe you are correct; unfortuately, the architecture handbook has many places which are woefully out of date, and there is no ETA for fixes. Could you file a PR or three noting these issues? (http://www.freebsd.org/send-pr.html) Thanks, Ben Kaduk