From owner-freebsd-geom@FreeBSD.ORG Fri Jan 26 21:12:48 2007 Return-Path: X-Original-To: freebsd-geom@FreeBSD.ORG Delivered-To: freebsd-geom@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 55E3616A405 for ; Fri, 26 Jan 2007 21:12:48 +0000 (UTC) (envelope-from rick@kiwi-computer.com) Received: from kiwi-computer.com (keira.kiwi-computer.com [63.224.10.3]) by mx1.freebsd.org (Postfix) with SMTP id D59D013C48D for ; Fri, 26 Jan 2007 21:12:47 +0000 (UTC) (envelope-from rick@kiwi-computer.com) Received: (qmail 73073 invoked by uid 2001); 26 Jan 2007 21:12:46 -0000 Date: Fri, 26 Jan 2007 15:12:46 -0600 From: "Rick C. Petty" To: Pawel Jakub Dawidek Message-ID: <20070126211246.GA72967@keira.kiwi-computer.com> References: <20070126055929.GA56183@keira.kiwi-computer.com> <915325.15953.qm@web30303.mail.mud.yahoo.com> <20070126191413.GA70473@keira.kiwi-computer.com> <20070126195429.GA64218@garage.freebsd.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070126195429.GA64218@garage.freebsd.pl> User-Agent: Mutt/1.4.2.1i Cc: freebsd-geom@FreeBSD.ORG Subject: Re: clear metadata using dd? X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: rick-freebsd@kiwi-computer.com List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Jan 2007 21:12:48 -0000 On Fri, Jan 26, 2007 at 08:54:30PM +0100, Pawel Jakub Dawidek wrote: > On Fri, Jan 26, 2007 at 01:14:14PM -0600, Rick C. Petty wrote: > > On Fri, Jan 26, 2007 at 05:57:23AM -0800, R. B. Riddick wrote: > > However, I'm not a big fan of the priority placed on the I/O to sync the > > disks. Pretty much during a resync, the box is unusable for file/disk I/O > > for a number of hours. Apps using GNOME/GTK are almost non-responsive, and > > forget about even using java/eclipse. I haven't found a good way to tune > > gmirror's sync. [...] > > Have you tried setting kern.geom.mirror.sync_requests to 1? I've fiddled with all of kern.geom.mirror.* knobs. I have no idea what these knobs do (although I've made educated guesses), and the man page is quite lacking. > > [...] I also wish you could pause the sync, restart, and unpause > > it where it left off. [...] > > It should just work. When you reboot during the sync process it should > continue after the reboot from the place it stopped. I have *never* seen this behavior, and I have restarted mid-sync a number of times. After each time, "gmirror status" reports 0% complete. I've tried this on 5.4, 5.5, 6.0, 6.1, but not 6.2 yet. -- Rick C. Petty