From owner-freebsd-fs@FreeBSD.ORG Thu Apr 27 03:17:26 2006 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id BBD0516A400 for ; Thu, 27 Apr 2006 03:17:26 +0000 (UTC) (envelope-from kent@outblaze.com) Received: from corpmail.outblaze.com (corpmail.outblaze.com [203.86.166.82]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3F59E43D48 for ; Thu, 27 Apr 2006 03:17:26 +0000 (GMT) (envelope-from kent@outblaze.com) Received: from vexira-out.outblaze.com (unknown [210.17.191.253]) by corpmail.outblaze.com (Postfix) with SMTP id 35A7037C88 for ; Thu, 27 Apr 2006 03:16:18 +0000 (GMT) Received: from [192.168.2.177] (210-177-227-130.outblaze.com [210.177.227.130]) by corpmail.outblaze.com (Postfix) with ESMTP id 7A0D516DD83 for ; Thu, 27 Apr 2006 03:16:17 +0000 (GMT) Message-ID: <44503865.4040809@outblaze.com> Date: Thu, 27 Apr 2006 11:20:05 +0800 From: Kent Ho User-Agent: Thunderbird 1.5 (X11/20051201) MIME-Version: 1.0 To: freebsd-fs@freebsd.org References: <444FA4CF.7040507@outblaze.com> <444FD6CB.2080805@centtech.com> In-Reply-To: <444FD6CB.2080805@centtech.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-AntiVirus: Checked by VAMS 1.57.2 Build 1.57.2-21 VDB 8.1162 Subject: Re: Do I need to reserve disk space for UFS snapshots? 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: Thu, 27 Apr 2006 03:17:26 -0000 > FreeBSD snapshots do not work the same way as NetApp snapshots. First, > they must reside on the same filesystem as the snapshotted filesystem. > They will initially eat up some space upon creation equal to the space > used by the cylinder group summaries and superblocks, but it isn't a > whole lot. You'll need to have however much space is changed weekly for > each snapshot, so if 10Gb per week is changed, then you'll need that > much space per snapshot file done. Thanks. FreeBSD cost less in terms of space required to keep snapshots? > > > Eric > > >