From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KTGgC-0005za-2k for qemu-devel@nongnu.org; Wed, 13 Aug 2008 09:46:24 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KTGg7-0005yu-Cj for qemu-devel@nongnu.org; Wed, 13 Aug 2008 09:46:22 -0400 Received: from [199.232.76.173] (port=43489 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KTGg7-0005yr-8u for qemu-devel@nongnu.org; Wed, 13 Aug 2008 09:46:19 -0400 Received: from smtp.eu.citrix.com ([62.200.22.115]:43495) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1KTGg7-0002oF-BA for qemu-devel@nongnu.org; Wed, 13 Aug 2008 09:46:19 -0400 Received: from samy by implementation.famille.thibault.fr with local (Exim 4.69) (envelope-from ) id 1KTGfx-00035Q-Ak for qemu-devel@nongnu.org; Wed, 13 Aug 2008 15:46:09 +0200 Date: Wed, 13 Aug 2008 14:46:08 +0100 From: Samuel Thibault Subject: Re: [Qemu-devel] [PATCH] Flush pending AIO on reboot and shutdown. Message-ID: <20080813134608.GN6165@implementation.uk.xensource.com> References: <20080813132358.17672.68212.stgit@gleb-debian.qumranet.com.qumranet.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20080813132358.17672.68212.stgit@gleb-debian.qumranet.com.qumranet.com> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Gleb Natapov, le Wed 13 Aug 2008 16:23:58 +0300, a écrit : > If there is outstanding IDE IO when BIOS starts execution then IDE > commands sent by BIOS will interfere with it and will leave IDE > subsystem in unpredictable state. This can happen when system reboots > unexpectedly without waiting for IO completion. Flushing IO before exit > prevents data lose. I'm wondering: isn't that what happens with real machines? Samuel