From owner-freebsd-questions@FreeBSD.ORG Wed Jul 23 21:30:28 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 36E9FAB5 for ; Wed, 23 Jul 2014 21:30:28 +0000 (UTC) Received: from smtpb.telissant.net (smtpb.telissant.net [199.233.230.156]) by mx1.freebsd.org (Postfix) with ESMTP id 0B1A12C54 for ; Wed, 23 Jul 2014 21:30:27 +0000 (UTC) Received: from barrida.3dresearch.com (localhost [127.0.0.1]) by smtpb.telissant.net (Postfix) with ESMTP id DBF9B2734E for ; Wed, 23 Jul 2014 17:30:20 -0400 (EDT) X-Virus-Scanned: amavisd-new at telissant.net Received: from smtpb.telissant.net ([127.0.0.1]) by barrida.3dresearch.com (barrida.3dresearch.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UzdzSuMv7PnF for ; Wed, 23 Jul 2014 17:29:56 -0400 (EDT) Received: from doncurzio.3dresearch.com (pool-108-3-92-199.pitbpa.east.verizon.net [108.3.92.199]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by smtpb.telissant.net (Postfix) with ESMTPSA id AAC152731F for ; Wed, 23 Jul 2014 17:29:56 -0400 (EDT) Received: from doncurzio.3dresearch.com (localhost [127.0.0.1]) by doncurzio.3dresearch.com (Postfix) with SMTP id 21B11A1E2C for ; Wed, 23 Jul 2014 17:29:56 -0400 (EDT) Date: Wed, 23 Jul 2014 17:29:54 -0400 From: Janos Dohanics To: FreeBSD Questions Subject: Disk space economy Message-Id: <20140723172954.e86883fcc8f54ee7ccbe32fd@3dresearch.com> X-Mailer: Sylpheed 3.3.0 (GTK+ 2.24.19; amd64-portbld-freebsd9.1) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jul 2014 21:30:28 -0000 Hello List, I have a directory which contains 48 files. 35 of these files are large, close to 2 GB (reported by ls -l). 7 of the files a smaller than 4 K, the rest of the files are few dozen Ks in size. This is a FreeBSD 10 system with ZFS and RAIDZ2. du -h reports the directory to be 208G. du -A -h reports the directory to be 69G. It seems there is 2G wasted for each 1G stored data - would you explain why and what can I do make more economical use of disk space? -- Janos Dohanics