From owner-freebsd-fs@FreeBSD.ORG Fri Dec 10 00:44:56 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id F1096106564A for ; Fri, 10 Dec 2010 00:44:56 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from qmta12.westchester.pa.mail.comcast.net (qmta12.westchester.pa.mail.comcast.net [76.96.59.227]) by mx1.freebsd.org (Postfix) with ESMTP id 5C3D88FC24 for ; Fri, 10 Dec 2010 00:44:55 +0000 (UTC) Received: from omta06.westchester.pa.mail.comcast.net ([76.96.62.51]) by qmta12.westchester.pa.mail.comcast.net with comcast id gzjZ1f00816LCl05CCkvtd; Fri, 10 Dec 2010 00:44:55 +0000 Received: from koitsu.dyndns.org ([98.248.41.155]) by omta06.westchester.pa.mail.comcast.net with comcast id hCkt1f00B3LrwQ23SCkuxj; Fri, 10 Dec 2010 00:44:55 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id 4F5DC9B427; Thu, 9 Dec 2010 16:44:52 -0800 (PST) Date: Thu, 9 Dec 2010 16:44:52 -0800 From: Jeremy Chadwick To: Julian Elischer Message-ID: <20101210004452.GA15765@icarus.home.lan> References: <20101208225352.GK33073@deviant.kiev.zoral.com.ua> <201012082356.oB8NuxwX040914@chez.mckusick.com> <20101209103411.GL33073@deviant.kiev.zoral.com.ua> <4D01731C.4070802@freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4D01731C.4070802@freebsd.org> User-Agent: Mutt/1.5.21 (2010-09-15) Cc: Kirk McKusick , pjd@freebsd.org, freebsd-fs@freebsd.org, Oliver Fromme Subject: Re: TRIM support for UFS? X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Dec 2010 00:44:57 -0000 On Thu, Dec 09, 2010 at 04:23:56PM -0800, Julian Elischer wrote: > On 12/9/10 2:34 AM, Kostik Belousov wrote: > > [patch] > > commit when ready.. I'm looking forwards to being able to try it out. And how does one actually verify TRIM is working? Most SSDs I've used do not have a SMART attribute that can help determine this. I would rather not make a bunch of assumptions about Attributes 226, 232, or 233 to help give some indication of it working. For folks to test this, there needs to be some indicator/verification mechanism that it's working. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |