From owner-freebsd-hackers Sat Feb 14 15:07:48 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id PAA03877 for freebsd-hackers-outgoing; Sat, 14 Feb 1998 15:07:48 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from server4.mpcbbs.com.br (server4.mpc.com.br [200.246.0.252]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id PAA03689 for ; Sat, 14 Feb 1998 15:06:19 -0800 (PST) (envelope-from capriotti@geocities.com) Received: from hot_nt (node03.mpc.com.br [200.246.0.3]) by server4.mpcbbs.com.br (8.8.6/8.8.6) with SMTP id SAA25751 for ; Sat, 14 Feb 1998 18:51:11 -0300 (EST) Message-Id: <3.0.32.19691231210000.00a226f0@pop.mpc.com.br> X-Sender: capriotti@pop.mpc.com.br (Unverified) X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Sat, 14 Feb 1998 19:52:33 -0300 To: hackers@FreeBSD.ORG From: Capriotti Subject: Re: SFT Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hey, boys, just one question that crossed my mind: Why can't the kernel do something like: (consider a system w/ mirrowed disks using ccd) if (main disk) fails then start using (mirror disk) What - technically - prevents ccd/kernel/something else from being able to do it ? At 11:33 AM 1/6/98 -0800, you wrote: > >On Tue, 6 Jan 1998, Capriotti wrote: > >> Does anyone have any news about System Fault Tolerance under Free ? >> >> Like what Novell has, from mirrowed disks to mirrowed servers ? > > Mirrored disks can be done with ccd. > > Mirrored servers are basically what Unix types call a cluster. On >Novell this is easy, because Novell boxes are basically just file servers, >but a Unix box could be doing many different things. Migrating tasks >from the failed system to the working system, and assumption >of the IP traffic, is difficult. > >Tom > > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message