From owner-freebsd-questions Mon May 10 21:35:24 1999 Delivered-To: freebsd-questions@freebsd.org Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (Postfix) with ESMTP id B0528155CA for ; Mon, 10 May 1999 21:35:19 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id OAA22364; Tue, 11 May 1999 14:05:18 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.3/8.9.0) id OAA66937; Tue, 11 May 1999 14:05:13 +0930 (CST) Date: Tue, 11 May 1999 14:05:12 +0930 From: Greg Lehey To: JJZhang Cc: freebsd-questions@FreeBSD.ORG Subject: Mirrored root fs (was: Disk Mirror) Message-ID: <19990511140511.E65965@freebie.lemis.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: ; from JJZhang on Mon, May 10, 1999 at 08:44:45PM -0700 WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Monday, 10 May 1999 at 20:44:45 -0700, JJZhang wrote: > On Monday, May 10, 1999 4:19 PM, JJZhang wrote: >> >> I will install one new FreeBSD-3.1. Because the data on it is critical, I >> want to use disk mirror: that is, when the main disk fail, I can only switch >> the disk cable and use the other disk as boot disk to continue work, at the >> same time I can repair the bad disk. Any one can tell me which software is >> going? ccd or vinum or any other? Both ccd and vinum will do this. > Actually I was running two FreeBSD 2.2.X for more than one year. Because I > found vinum need "unused" file system, Well, in fact Vinum needs a "vinum" partition, but it will currently accept an "unused" partition. That's easy to change: use disklabel -e. The reason for this requirement is to stop you from shooting yourself in the foot and overwriting a file system. > so I decided to install new FreeBSD-3.1-stable to support disk > mirror so that when something happen and no technical guys in, I can > only tell someone to switch the disks and I can repair the bad fs > remotely. You don't need to "switch the disks" with Vinum. It just carries on running. With ccd, you need to reconfigure and reboot. > But I really doesn't find the root fs can be mirrored by vinum! I > checked the ccd, still didn't find such information. Currently neither Vinum nor ccd can mirror the root file system. I'm planning to do this for Vinum in a couple of months. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message