From owner-freebsd-questions@FreeBSD.ORG Tue Jul 15 06:25:25 2008 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 9BCDD1065675 for ; Tue, 15 Jul 2008 06:25:25 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.freebsd.org (Postfix) with ESMTP id 609A88FC25 for ; Tue, 15 Jul 2008 06:25:25 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (smmsp@localhost [127.0.0.1]) by dan.emsphone.com (8.14.3/8.14.2) with ESMTP id m6F6POTO034632 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 15 Jul 2008 01:25:24 -0500 (CDT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.14.3/8.14.2/Submit) id m6F6POcx034628; Tue, 15 Jul 2008 01:25:24 -0500 (CDT) (envelope-from dan) Date: Tue, 15 Jul 2008 01:25:23 -0500 From: Dan Nelson To: Steve Bertrand Message-ID: <20080715062523.GA73799@dan.emsphone.com> References: <487BFD29.5030708@ibctech.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <487BFD29.5030708@ibctech.ca> X-OS: FreeBSD 7.0-STABLE User-Agent: Mutt/1.5.18 (2008-05-17) Cc: freebsd-questions@freebsd.org Subject: Re: Calculating disk space with ZFS 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, 15 Jul 2008 06:25:25 -0000 In the last episode (Jul 14), Steve Bertrand said: > I'm configuring Amanda over ZFS, with plans for a five 'tape' > diskless cycle. > > When I'm calculating the size of each 'tape', should I divide up my > dedicated backup space based on a 'df -h', or a 'zpool list'? > > Assume that if I go by the 'zpool list' command, I'd like to allocate > 1.8TB, divided by five to tapes. Should I use this number, or would > it be more appropriate to slice up the space based on the 'df -h' > below? I'm assuming the latter, but I'd just like to ask for > clarification. > > amanda# zpool list > NAME SIZE USED AVAIL CAP HEALTH ALTROOT > storage 1.82T 2.86G 1.82T 0% ONLINE - zfs list will give you a more accurate number, I think. At least all the posts matching this search seem to say so: http://www.google.com/search?q=site:mail.opensolaris.org+"zpool+list"+"zfs+list" > amanda# df -h > Filesystem Size Used Avail Capacity Mounted on > storage 1.3T 2.1G 1.3T 0% / > devfs 1.0K 1.0K 0B 100% /dev -- Dan Nelson dnelson@allantgroup.com