From owner-freebsd-fs Tue May 15 11:30:10 2001 Delivered-To: freebsd-fs@freebsd.org Received: from smtp04.primenet.com (smtp04.primenet.com [206.165.6.134]) by hub.freebsd.org (Postfix) with ESMTP id 326CF37B422; Tue, 15 May 2001 11:30:07 -0700 (PDT) (envelope-from tlambert@usr08.primenet.com) Received: (from daemon@localhost) by smtp04.primenet.com (8.9.3/8.9.3) id LAA25358; Tue, 15 May 2001 11:20:31 -0700 (MST) Received: from usr08.primenet.com(206.165.6.208) via SMTP by smtp04.primenet.com, id smtpdAAAUsaGnX; Tue May 15 11:20:05 2001 Received: (from tlambert@localhost) by usr08.primenet.com (8.8.5/8.8.5) id LAA29042; Tue, 15 May 2001 11:21:06 -0700 (MST) From: Terry Lambert Message-Id: <200105151821.LAA29042@usr08.primenet.com> Subject: Re: Re[2]: [kris@obsecurity.org: Re: cvs commit: src/etc rc] To: mi@aldan.algebra.com (Mikhail Teterin) Date: Tue, 15 May 2001 18:21:05 +0000 (GMT) Cc: bright@wintelcom.net, bsddiy@163.net, kris@obsecurity.org, grog@lemis.com, tlambert@primenet.com, mckusick@mckusick.com, ru@FreeBSD.org, fs@FreeBSD.org In-Reply-To: <200105151510.f4FFABt62656@aldan.algebra.com> from "Mikhail Teterin" at May 15, 2001 11:10:08 AM X-Mailer: ELM [version 2.5 PL2] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-fs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > > Assuming your database is a serious production quality system it will > > implement its own style of data integrity and consistancy checking > > on top of the filesystems in case it happens to crash. > > Is not this a slightly wrong attitude? Why does a serious production > quality database needs its own checking for problems, which can only > be come from OS if it runs on a serisous production quality OS? Because there are implied dependencies between data and the indices which refer to it, about which the host operating system can't have any information, unless it exports a transactioning system to user space, and the database vendor adopts that interface. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message