From owner-cvs-all Tue Dec 7 7: 5:48 1999 Delivered-To: cvs-all@freebsd.org Received: from caspian.plutotech.com (caspian.plutotech.com [206.168.67.80]) by hub.freebsd.org (Postfix) with ESMTP id 9026714BE7; Tue, 7 Dec 1999 07:05:41 -0800 (PST) (envelope-from gibbs@caspian.plutotech.com) Received: from caspian.plutotech.com (localhost [127.0.0.1]) by caspian.plutotech.com (8.9.3/8.9.1) with ESMTP id IAA00369; Tue, 7 Dec 1999 08:05:24 -0700 (MST) (envelope-from gibbs@caspian.plutotech.com) Message-Id: <199912071505.IAA00369@caspian.plutotech.com> X-Mailer: exmh version 2.1.0 09/18/1999 To: Matthew Dillon Cc: Julian Elischer , Mike Smith , cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/kern kern_shutdown.c In-reply-to: Your message of "Tue, 07 Dec 1999 00:29:12 PST." <199912070829.AAA75674@apollo.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 07 Dec 1999 08:05:24 -0700 From: "Justin T. Gibbs" Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk >:This is basically what we decided was needed in discussion with Kirk to >:make Soft Updates safe. (The whole point). >: >:Julian > > The disk can lie about whether it has written data to the disk without > messing softupdates up, but it cannot reorder writes that the system has > told it must be ordered. SCSI has a tag to guarentee ordering (or not), > but I don't know if IDE has the same sort of feature. > > -Matt My understanding is that the ordered tag may go away in the near SCSI future. I think this is absurd personally, but the makers of cheap disks are making a big push for this. -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message