From owner-freebsd-current@FreeBSD.ORG Tue Apr 27 02:37:40 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 58AE5106564A; Tue, 27 Apr 2010 02:37:40 +0000 (UTC) (envelope-from doconnor@gsoft.com.au) Received: from cain.gsoft.com.au (cain.gsoft.com.au [203.31.81.10]) by mx1.freebsd.org (Postfix) with ESMTP id C271D8FC13; Tue, 27 Apr 2010 02:37:39 +0000 (UTC) Received: from ur.gsoft.com.au (Ur.gsoft.com.au [203.31.81.44]) (authenticated bits=0) by cain.gsoft.com.au (8.13.8/8.13.8) with ESMTP id o3R2bDwB035377 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Tue, 27 Apr 2010 12:07:19 +0930 (CST) (envelope-from doconnor@gsoft.com.au) Mime-Version: 1.0 (Apple Message framework v1078) Content-Type: text/plain; charset=koi8-r From: "Daniel O'Connor" X-Priority: 3 (Normal) In-Reply-To: <609355278.20100426234808@serebryakov.spb.ru> Date: Tue, 27 Apr 2010 12:07:13 +0930 Content-Transfer-Encoding: quoted-printable Message-Id: <035A6E1D-6537-476B-9427-52072E60C41D@gsoft.com.au> References: <4BD06BD9.6030401@FreeBSD.org> <20100426.103327.319083499807534535.imp@bsdimp.com> <20100426181209.GB3012@garage.freebsd.pl> <20100426.121946.506212773266921087.imp@bsdimp.com> <20100426191012.GA1711@garage.freebsd.pl> <609355278.20100426234808@serebryakov.spb.ru> To: lev@freebsd.org X-Mailer: Apple Mail (2.1078) X-Spam-Score: -2.431 () ALL_TRUSTED,AWL,BAYES_00,MIME_CHARSET_FARAWAY X-Scanned-By: MIMEDefang 2.63 on 203.31.81.10 Cc: mav@freebsd.org, freebsd-current@freebsd.org, Pawel Jakub Dawidek , "M. Warner Losh" , freebsd-geom@freebsd.org Subject: Re: Switchover to CAM ATA? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Apr 2010 02:37:40 -0000 On 27/04/2010, at 5:18 AM, Lev Serebryakov wrote: > Hello, Pawel. > You wrote 26 =C1=D0=D2=C5=CC=D1 2010 =C7., 23:10:12: >=20 >> You most likely got it right, I'm just saying creating separate GEOM >> class for each metadata format is wrong direction. :) > Does ataraid translations and checksuming (in case of RAID5) now or > it configures chipsets only? >=20 > All these ``raids'' are known as ``soft raids'' or ``fake raids'', > but what does do real work -- BIOS or driver (Ataraid in case of > FreeBSD)? Both.. ataraid does it when FreeBSD is running but the BIOS does it before then = so boot0, the loader, et al can read the disk without having an = underlying driver. -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C