From owner-freebsd-fs Sat Feb 14 06:00:24 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id GAA21962 for freebsd-fs-outgoing; Sat, 14 Feb 1998 06:00:24 -0800 (PST) (envelope-from owner-freebsd-fs@FreeBSD.ORG) Received: from gjp.erols.com (alex-va-n008c243.moon.jic.com [206.156.18.253]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id GAA21953 for ; Sat, 14 Feb 1998 06:00:23 -0800 (PST) (envelope-from gjp@gjp.erols.com) Received: from gjp.erols.com (localhost.erols.com [127.0.0.1]) by gjp.erols.com (8.8.8/8.8.7) with ESMTP id IAA06959; Sat, 14 Feb 1998 08:58:32 -0500 (EST) (envelope-from gjp@gjp.erols.com) X-Mailer: exmh version 2.0.1 12/23/97 To: Greg Lehey cc: Michael Hancock , freebsd-fs@FreeBSD.ORG From: "Gary Palmer" Subject: Re: ccd and ftd In-reply-to: Your message of "Sat, 14 Feb 1998 12:02:47 +1030." <19980214120247.43100@freebie.lemis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sat, 14 Feb 1998 08:58:31 -0500 Message-ID: <6955.887464711@gjp.erols.com> Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Greg Lehey wrote in message ID <19980214120247.43100@freebie.lemis.com>: > On Sat, 14 February 1998 at 10:19:49 +0900, Michael Hancock wrote: > > What happens when a disk goes bad? > The worst possible scenario. Your whole disk set goes down, and to > get it up again, you have to reconfigure the set without the defective > drive. That's one of the problems that my driver addresses. And to make it worse, filesystem operations may fail if one half of the mirror is bad, leading to a really badly trashed filesystem once you reboot and have removed the bad mirror. This, IMHO, is bad, and why CCD mirroring should not be used without some advanced monitoring system that can break the mirror at the first sign of disk errors (possibly after trying to re-sync the mirrors to see if it was a transient error). Gary -- Gary Palmer FreeBSD Core Team Member FreeBSD: Turning PC's into workstations. See http://www.FreeBSD.ORG/ for info To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message