From owner-cvs-all Wed Dec 8 6:47:45 1999 Delivered-To: cvs-all@freebsd.org Received: from mojave.sitaranetworks.com (mojave.sitaranetworks.com [199.103.141.157]) by hub.freebsd.org (Postfix) with ESMTP id 7D74715526; Wed, 8 Dec 1999 06:46:59 -0800 (PST) (envelope-from grog@mojave.sitaranetworks.com) Message-ID: <19991207210220.00705@mojave.sitaranetworks.com> Date: Tue, 7 Dec 1999 21:02:20 -0500 From: Greg Lehey To: "Justin T. Gibbs" , 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 Reply-To: Greg Lehey References: <199912070829.AAA75674@apollo.backplane.com> <199912071505.IAA00369@caspian.plutotech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <199912071505.IAA00369@caspian.plutotech.com>; from Justin T. Gibbs on Tue, Dec 07, 1999 at 08:05:24AM -0700 Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk On Tuesday, 7 December 1999 at 8:05:24 -0700, Justin T. Gibbs wrote: >> :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. Given its weaknesses, I'm not too concerned. Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message