From owner-freebsd-fs@FreeBSD.ORG Sat Dec 22 15:38:40 2007 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 CA1EC16A417 for ; Sat, 22 Dec 2007 15:38:40 +0000 (UTC) (envelope-from gary.jennejohn@freenet.de) Received: from mout2.freenet.de (mout2.freenet.de [IPv6:2001:748:100:40::2:4]) by mx1.freebsd.org (Postfix) with ESMTP id 7900313C447 for ; Sat, 22 Dec 2007 15:38:40 +0000 (UTC) (envelope-from gary.jennejohn@freenet.de) Received: from [195.4.92.11] (helo=1.mx.freenet.de) by mout2.freenet.de with esmtpa (Exim 4.68) (envelope-from ) id 1J66Qx-0006YG-3q for freebsd-fs@freebsd.org; Sat, 22 Dec 2007 16:38:39 +0100 Received: from x0777.x.pppool.de ([89.59.7.119]:65392 helo=peedub.jennejohn.org) by 1.mx.freenet.de with esmtpa (ID gary.jennejohn@freenet.de) (port 25) (Exim 4.68 #1) id 1J66Qw-0005cK-VD for freebsd-fs@freebsd.org; Sat, 22 Dec 2007 16:38:39 +0100 Date: Sat, 22 Dec 2007 16:38:38 +0100 From: Gary Jennejohn To: freebsd-fs@freebsd.org Message-ID: <20071222163838.199f0811@peedub.jennejohn.org> In-Reply-To: References: Organization: DENX Softwre Engineering GmbH X-Mailer: Claws Mail 3.0.2 (GTK+ 2.10.14; amd64-portbld-freebsd8.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: How safe is ZFS to use for a home user? X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: gary.jennejohn@freenet.de List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 22 Dec 2007 15:38:40 -0000 On Fri, 21 Dec 2007 22:34:07 -0500 "John Klimek" wrote: > Has anybody ever lost data due to any bugs or anything like that? I'm > going to use this ZFS as my primary storage medium (and poor man's > backup solution), so I would be devastated if I lost my entire array > due to a bug or other issue (aside from losing two hard drives in a > three hard drive RAID-Z array). > I lost a mirror on 2 SATA drives when I installed a new mobo. A plain ZFS concatenation of 2 partitions on a SCSI drive didn't get lost. I've never lost data due to a crash. Might have been pilot error. Might have had something to do with the way the new mobo assigned the disks. Luckily I had a backup of the really important stuff. > Also, my system is going to have 3x 400 GB (RAID-Z) and 1x 80 GB > (Standalone ZFS) and has 1.5 GB RAM (P3-1.0 GHz). > > What should I be setting my kmem and kmem_max to (or whatever) to > avoid this bug I keep hearing about? > This sort of question has been answered umpteen times already. Check out the ML archive or the wiki (http://wiki.freebsd.org/ZFSTuningGuide). -- Gary Jennejohn