From owner-freebsd-fs@FreeBSD.ORG Tue Feb 13 18:37:25 2007 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 076B616A408 for ; Tue, 13 Feb 2007 18:37:25 +0000 (UTC) (envelope-from randy@psg.com) Received: from rip.psg.com (rip.psg.com [147.28.0.39]) by mx1.freebsd.org (Postfix) with ESMTP id EAAE913C474 for ; Tue, 13 Feb 2007 18:37:22 +0000 (UTC) (envelope-from randy@psg.com) Received: from localhost ([127.0.0.1] helo=roam.psg.com) by rip.psg.com with esmtp (Exim 4.66 (FreeBSD)) (envelope-from ) id 1HH2Wn-000MVN-Br; Tue, 13 Feb 2007 18:37:21 +0000 Received: from localhost ([127.0.0.1] helo=roam.psg.com) by roam.psg.com with esmtp (Exim 4.66 (FreeBSD)) (envelope-from ) id 1HH2Tx-00081d-Od; Tue, 13 Feb 2007 10:34:25 -0800 From: Randy Bush MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <17874.1201.233347.849783@roam.psg.com> Date: Tue, 13 Feb 2007 08:34:25 -1000 To: John Kozubik References: <200702130927.l1D9RBn9034761@lurza.secnetix.de> <20070213093220.C95571@kozubik.com> Cc: freebsd-fs@freebsd.org Subject: Re: comments on newfs raw disk ? Safe ? (7 terabyte array) 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, 13 Feb 2007 18:37:25 -0000 > Also remember that filling a filesystem to capacity _while_ it is > being snapshotted will lock your system up[1]. I suppose some > interesting crash loops could arise from this bug on a near full > filesystem that someone is unlucky enough to background fsck. > > I think that FreeBSD needs to address the default implementation > of background fsck in general. UFS2 snapshots are dangerous and > unstable, and have been since their introduction in 5.x [2]. first, this smells of fud. second, this is not a problem for me. as the 4tb drive is the target of everyone else's dump/restore, i do not intend to snapshot it and dump it live. rasndh