From owner-freebsd-current@FreeBSD.ORG Thu May 6 05:05:43 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DA6F316A4CE for ; Thu, 6 May 2004 05:05:43 -0700 (PDT) Received: from postman.ripe.net (postman.ripe.net [193.0.0.199]) by mx1.FreeBSD.org (Postfix) with ESMTP id 78AEB43D5F for ; Thu, 6 May 2004 05:05:43 -0700 (PDT) (envelope-from marks@dell-laptop.6bone.nl) Received: by postman.ripe.net (Postfix, from userid 8) id E0CEC51C5D; Thu, 6 May 2004 14:05:42 +0200 (CEST) Received: from birch.ripe.net (birch.ripe.net [193.0.1.96]) by postman.ripe.net (Postfix) with ESMTP id 9BEAB4E400; Thu, 6 May 2004 14:05:42 +0200 (CEST) Received: from dell-laptop.6bone.nl (cow.ripe.net [193.0.1.239]) by birch.ripe.net (8.12.10/8.11.6) with SMTP id i46C5gVt008381; Thu, 6 May 2004 14:05:42 +0200 Received: (nullmailer pid 1223 invoked by uid 1001); Thu, 06 May 2004 12:05:42 -0000 Date: Thu, 6 May 2004 14:05:42 +0200 From: Mark Santcroos To: Bruce Evans Message-ID: <20040506120541.GA1131@laptop.6bone.nl> References: <20040505195425.GA2559@laptop.6bone.nl> <409948A7.1040100@DeepCore.dk> <20040506212202.O19882@gamplex.bde.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040506212202.O19882@gamplex.bde.org> User-Agent: Mutt/1.4.2.1i X-Handles: MS6-6BONE, MS18417-RIPE X-RIPE-Spam-Level: X-RIPE-Spam-Status: N 0.000605 / 0.0 / 0.0 / disabled X-RIPE-Signature: 3e8e3045e9b7c76b5eeac83422cf2b56 cc: current@FreeBSD.org cc: S?ren Schmidt Subject: Re: ATA_FLUSHCACHE failing X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 06 May 2004 12:05:44 -0000 On Thu, May 06, 2004 at 09:36:31PM +1000, Bruce Evans wrote: > Panic dumps cannot use either device interrupts or timeouts, not to > mention normal locks, since panics may occur in almost any context; > in particular they may occur with all interrupts masked and important > locks in a bad state. Immediate mode must be used, but it doesn't > seem to be, and a comment says that it is only used for other things: My eye felt on the same code and comments! But if this is indeed the problem, why isn't everyone experiencing this issue? Stated differently, are there problems with using ATA_IMMEDIATE_MODE? Mark