From owner-freebsd-current Mon Dec 10 10:56:13 2001 Delivered-To: freebsd-current@freebsd.org Received: from mass.dis.org (mass.dis.org [216.240.45.41]) by hub.freebsd.org (Postfix) with ESMTP id A4A9037B417 for ; Mon, 10 Dec 2001 10:56:09 -0800 (PST) Received: from mass.dis.org (localhost [127.0.0.1]) by mass.dis.org (8.11.6/8.11.3) with ESMTP id fBAJ1hV01951; Mon, 10 Dec 2001 11:01:44 -0800 (PST) (envelope-from msmith@mass.dis.org) Message-Id: <200112101901.fBAJ1hV01951@mass.dis.org> X-Mailer: exmh version 2.1.1 10/15/1999 To: Matthew Dillon Cc: freebsd-current@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern subr_diskmbr.c In-reply-to: Your message of "Mon, 10 Dec 2001 10:49:28 PST." <200112101849.fBAInSO47847@apollo.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 10 Dec 2001 11:01:43 -0800 From: Mike Smith Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG > Well, for reads a non-stripe-crossing op would still work reasonably > well. But for writes less then full-stripe operations without > spindle sync are going to be terrible due to the read-before-write > requirement (to calculate parity). The disk cache is useless in that > case. You obviously weren't reading the previous thread on RAID5 checksum calculation, I see. 8) -- ... every activity meets with opposition, everyone who acts has his rivals and unfortunately opponents also. But not because people want to be opponents, rather because the tasks and relationships force people to take different points of view. [Dr. Fritz Todt] V I C T O R Y N O T V E N G E A N C E To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message