From owner-freebsd-current Sat Sep 19 03:32:19 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id DAA19996 for freebsd-current-outgoing; Sat, 19 Sep 1998 03:32:19 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from ns1.yes.no (ns1.yes.no [195.119.24.10]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id DAA19989 for ; Sat, 19 Sep 1998 03:32:13 -0700 (PDT) (envelope-from eivind@bitbox.follo.net) Received: from bitbox.follo.net (bitbox.follo.net [195.204.143.218]) by ns1.yes.no (8.9.1a/8.9.1) with ESMTP id MAA13320; Sat, 19 Sep 1998 12:31:46 +0200 (CEST) Received: (from eivind@localhost) by bitbox.follo.net (8.8.8/8.8.6) id MAA23202; Sat, 19 Sep 1998 12:31:44 +0200 (MET DST) Message-ID: <19980919123143.36373@follo.net> Date: Sat, 19 Sep 1998 12:31:43 +0200 From: Eivind Eklund To: Terry Lambert , Don Lewis Cc: current@FreeBSD.ORG Subject: Re: softupdates & fsck References: <199809190520.WAA09949@salsa.gv.tsc.tdk.com> <199809190802.BAA19430@usr08.primenet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.89.1i In-Reply-To: <199809190802.BAA19430@usr08.primenet.com>; from Terry Lambert on Sat, Sep 19, 1998 at 08:02:00AM +0000 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, Sep 19, 1998 at 08:02:00AM +0000, Terry Lambert wrote: > That you are seeing these problems implies that the bwrite ordering > guarantees that the driver must provide (i.e., that the blocks will > be written in the order requested, and that the writes will not > return as completed until the data has been committed to the disk) > are not being honored. Given that most drives don't honour these guarantees [1] it may happen even without a problem with the driver. [1] This marks the point where somebody comes runing, waving standards documents and becoming more and more red in the face, while I say "Yes, I know they say the drives are supposed to - but in fact, the drives don't actually *do* what they're supposed to." Eivind. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message