From owner-freebsd-fs Mon Mar 17 20: 2:46 2003 Delivered-To: freebsd-fs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F2CE937B401; Mon, 17 Mar 2003 20:02:44 -0800 (PST) Received: from mail.chesapeake.net (chesapeake.net [205.130.220.14]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0309F43F3F; Mon, 17 Mar 2003 20:02:44 -0800 (PST) (envelope-from jroberson@chesapeake.net) Received: from localhost (jroberson@localhost) by mail.chesapeake.net (8.11.6/8.11.6) with ESMTP id h2I42c868107; Mon, 17 Mar 2003 23:02:39 -0500 (EST) (envelope-from jroberson@chesapeake.net) Date: Mon, 17 Mar 2003 23:02:38 -0500 (EST) From: Jeff Roberson To: Terry Lambert Cc: Brooks Davis , Julian Elischer , Alfred Perlstein , FreeBSD current users , Subject: Re: Anyone working on fsck? In-Reply-To: <3E769970.3A05ECAF@mindspring.com> Message-ID: <20030317230147.I66343-100000@mail.chesapeake.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Mon, 17 Mar 2003, Terry Lambert wrote: > Jeff Roberson wrote: > > On Mon, 17 Mar 2003, Brooks Davis wrote: > > > I am still intrested in improvements to fsck since I'm planning to buy > > > several systems with two 1.4TB IDE RAID5 arrays in them soon. > > > > For these types of systems doing a block caching layer with a prefetch > > that understands how many spindles there are would be a huge benefit. > > I call that layer "Vinum" or "RAIDFrame", since that's a job I > expect that code to do for me. 8-). They are not responsible for data caching. Only informing the upper layers how many spindles they have. Software RAID should be a transform only in my opinion. There is no reason to have duplicate block caches in system memory. Cheers, Jeff To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message