From owner-freebsd-hackers Wed Mar 6 8:51:17 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mail.openet-telecom.com (mail.openet-telecom.com [62.17.151.60]) by hub.freebsd.org (Postfix) with ESMTP id 5C7CB37B431 for ; Wed, 6 Mar 2002 08:51:10 -0800 (PST) Received: from gpo.openet-telecom.lan (unverified) by mail.openet-telecom.com (Content Technologies SMTPRS 4.2.1) with ESMTP id ; Wed, 6 Mar 2002 16:59:47 +0000 Received: from openet-telecom.com (10.0.0.40) by gpo.openet-telecom.lan (NPlex 6.5.007) id 3C862B5E000003E9; Wed, 6 Mar 2002 16:47:06 +0000 Message-ID: <3C8648F5.1EC1E4EE@openet-telecom.com> Date: Wed, 06 Mar 2002 16:51:01 +0000 From: Peter Edwards X-Mailer: Mozilla 4.79 [en] (X11; U; Linux 2.4.2 i386) X-Accept-Language: en MIME-Version: 1.0 To: Zhihui Zhang Cc: "Brian T.Schellenberger" , Lars Eggert , "Rogier R. Mulhuijzen" , Julian Elischer , freebsd-hackers@FreeBSD.ORG Subject: Re: A weird disk behaviour References: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Zhihui Zhang wrote: > ... I also do not read anything during the partial block write, > and I think the disk controller should not do that either. If you do a partial block write, surely at some point the block must be read in order to preserve that segment of data you are _not_ overwriting? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message