From owner-freebsd-questions@FreeBSD.ORG Fri Aug 10 18:42:16 2007 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 BAC8716A418 for ; Fri, 10 Aug 2007 18:42:16 +0000 (UTC) (envelope-from cb@severious.net) Received: from ion.gank.org (ion.gank.org [69.55.238.164]) by mx1.freebsd.org (Postfix) with ESMTP id 9A44913C461 for ; Fri, 10 Aug 2007 18:42:16 +0000 (UTC) (envelope-from cb@severious.net) Received: by ion.gank.org (Postfix, from userid 1001) id E83671178F; Fri, 10 Aug 2007 13:42:15 -0500 (CDT) Date: Fri, 10 Aug 2007 13:42:14 -0500 From: Craig Boston To: Wojciech Puchar Message-ID: <20070810184214.GA921@nowhere> Mail-Followup-To: Craig Boston , Wojciech Puchar , freebsd-questions@freebsd.org References: <20070810122714.D78112@wojtek.tensor.gdynia.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070810122714.D78112@wojtek.tensor.gdynia.pl> User-Agent: Mutt/1.4.2.3i Cc: freebsd-questions@freebsd.org Subject: Re: anyone using ZFS for real? 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: Fri, 10 Aug 2007 18:42:16 -0000 On Fri, Aug 10, 2007 at 12:27:49PM +0200, Wojciech Puchar wrote: > on FreeBSD 7.0 > > i mean is it stable enough to be used on FreeBSD/amd64 It depends what you mean by "real". I'm using it for everything (including root) on several systems: 1 amd64 machine in a desktop role * single SATA disk 1 i386 machine in a server role (with only 512MB RAM) * raidz over 3 ATA100 disks 4 i386 machines in desktop roles * two are single disk setups * one is a 3 disk raidz (SATA) * one is a 1GB compactflash card in a PCMCIA converter (diskless laptop) 1 bootable USB flash memory stick (i386 kernel) that I sometimes plug in to random machines. It's a 2GB stick and is configured with lots of desktop stuff but is also handy for hardware tests and recovering stuff off broken windows machines. gzip compression really shines here I also have a couple of external USB hard drives that have a zpool on them. One of them is geli encrypted. The other holds the src/obj/ports filesystems for my flash-based systems, so it gets plugged in and zpool import/export'd a lot when there are updates. My recipe generally involves setting vm.kmem_size to somewhere between 1/3 and 1/2 of physical RAM size, and reducing kern.maxvnodes to somewhere between 1/2 and 2/3 of its autotuned value. I sometimes disable prefetch, but honestly I can't tell a difference between it being on or off. Craig