From owner-freebsd-fs@FreeBSD.ORG Tue Aug 14 09:55:31 2012 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 A90AD10657C2 for ; Tue, 14 Aug 2012 09:55:31 +0000 (UTC) (envelope-from olivier@gid0.org) Received: from mail-lb0-f182.google.com (mail-lb0-f182.google.com [209.85.217.182]) by mx1.freebsd.org (Postfix) with ESMTP id BFA708FC16 for ; Tue, 14 Aug 2012 09:55:30 +0000 (UTC) Received: by lbbgk8 with SMTP id gk8so175363lbb.13 for ; Tue, 14 Aug 2012 02:55:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:x-gm-message-state; bh=4IsXUp5+Z15WleTSX3b1ZlbWsmTJy/CYny6NFyVROnI=; b=WPeBJ4oWtGqYEjyWnH4k2TYuUluPfukuQ9qjcCYFY5gUsFyBZwEVrF2qghCxHlAXBS R8UHuzRrz1fEcCRqclV953DwGNgzXQeltZNGtELx6PjTlSt/+ZqSP5eDMLPhjG5pRSu0 i3bQyyLL5ioYQ+F8NM75pVyNc4zSkUcerG4I4jIXrdkyc0Xo0yqIw+tj3NyA1ptoUCXm 9ab1TnG7sfMk/7J8KlF7ccU4WrUCw4EDzPThRl+mBWsz4hFikUUxyaGI5LGKntDqqK24 Kjm471UbHg3IHig6lJ3rmelQNyDcvRtn5QE5wZIuQjntf0Mpz/YHbf2pvdaDfYKkO6RX kTFQ== MIME-Version: 1.0 Received: by 10.112.82.42 with SMTP id f10mr7721376lby.95.1344938129125; Tue, 14 Aug 2012 02:55:29 -0700 (PDT) Received: by 10.112.2.36 with HTTP; Tue, 14 Aug 2012 02:55:29 -0700 (PDT) In-Reply-To: References: <7BDA02A3-99ED-4F67-9B2D-5AAF1523642E@helenius.fi> Date: Tue, 14 Aug 2012 11:55:29 +0200 Message-ID: From: Olivier Smedts To: Steven Hartland Content-Type: text/plain; charset=ISO-8859-1 X-Gm-Message-State: ALoCoQkBynAXo9WgFr0BZwfaSAVr+f0yeuBa17PT50wZQuiTDY2YLwKXARMXMu5etl+1xBQ2DNyi Cc: freebsd-fs@freebsd.org, Petri Helenius Subject: Re: zero deleted blocks 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: Tue, 14 Aug 2012 09:55:32 -0000 2012/8/13 Steven Hartland : > Also need to ensure compression isnt turned on and its not an device > that does compression on disk / disk controller such as Sandforce > based SSD's as that could resulting in something other than the > intended behavour. I think the "device" we're speaking of here is a flat file, as the OP wants to compact virtual machines' disks. -- Olivier Smedts _ ASCII ribbon campaign ( ) e-mail: olivier@gid0.org - against HTML email & vCards X www: http://www.gid0.org - against proprietary attachments / \ "Il y a seulement 10 sortes de gens dans le monde : ceux qui comprennent le binaire, et ceux qui ne le comprennent pas."