From owner-freebsd-questions@FreeBSD.ORG Tue Jun 23 19:46:21 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 611211065670 for ; Tue, 23 Jun 2009 19:46:21 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl [IPv6:2001:4070:101:2::2]) by mx1.freebsd.org (Postfix) with ESMTP id 95A458FC16 for ; Tue, 23 Jun 2009 19:46:18 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1]) by wojtek.tensor.gdynia.pl (8.14.3/8.14.3) with ESMTP id n5NJk7Wg059417; Tue, 23 Jun 2009 21:46:08 +0200 (CEST) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from localhost (wojtek@localhost) by wojtek.tensor.gdynia.pl (8.14.3/8.14.3/Submit) with ESMTP id n5NJk20I059414; Tue, 23 Jun 2009 21:46:04 +0200 (CEST) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Date: Tue, 23 Jun 2009 21:46:01 +0200 (CEST) From: Wojciech Puchar To: Roland Smith In-Reply-To: <20090623182225.GC33220@slackbox.xs4all.nl> Message-ID: References: <20090622230729.GA20167@thought.org> <20090623170739.GA33220@slackbox.xs4all.nl> <20090623182225.GC33220@slackbox.xs4all.nl> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: Gary Kline , FreeBSD Mailing List Subject: Re: you're not going to believe this. X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Jun 2009 19:46:21 -0000 >> and lifetime. > > Even a flash filesystem will have to do wear levelling. yes - but it don't have to copy blocks that are free. with disk emulation - it doesn't know anything about filesystem and don't know what blocks are free.