From owner-freebsd-stable@FreeBSD.ORG Tue Nov 30 23:06:59 2004 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: by hub.freebsd.org (Postfix, from userid 664) id 88EC916A4D0; Tue, 30 Nov 2004 23:06:59 +0000 (GMT) Date: Tue, 30 Nov 2004 23:06:59 +0000 From: David O'Brien To: Bob Bishop Message-ID: <20041130230659.GA30089@hub.freebsd.org> References: <4013.172.16.0.200.1101790160.squirrel@172.16.0.200> <41AC1A0D.1020705@speakeasy.net> <4460.172.16.0.200.1101798279.squirrel@172.16.0.200> <6.2.0.14.2.20041130110542.03fdced0@gid.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6.2.0.14.2.20041130110542.03fdced0@gid.co.uk> User-Agent: Mutt/1.4.2.1i X-Operating-System: FreeBSD 4.10-STABLE Organization: The NUXI BSD group X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Rsa-Keyid: 1024/34F9F9D5 cc: Mike Jakubik cc: stable@freebsd.org Subject: Re: No RAID for VT8237? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: obrien@freebsd.org List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Nov 2004 23:06:59 -0000 On Tue, Nov 30, 2004 at 11:09:34AM +0000, Bob Bishop wrote: > You might try an 'atacontrol create '. I had a problem where I'd > defined RAID1 in the BIOS, but 5.3 wouldn't see it (specifically saw the > drives individually but no ar0); after atacontrol create... it all works. > Go fig. This isn't weird. By using 'atacontrol create' yourself, you have a pure-software RAID same as you would have with ccd(4). The difference from defineing it in your software-assist "RAID" BIOS is that you can boot off the RAID. With the pure-software RAID you cannot[*]. [*] Unless your PATA/SATA "RAID" controller just happens to understand the metadata used by 'atacontrol create'. A 'atacontrol create' RAID1 (mirror) might also be bootable, I'm not sure about that; but a RAID0 (stripe) certainly isn't. There are many new SATA "RAID" controllers that our ATA driver doesn't yet understand the metadata. Soren is working on support for these newer chipsets. -- -- David (obrien@FreeBSD.org)