From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KTOtH-00038w-Qi for qemu-devel@nongnu.org; Wed, 13 Aug 2008 18:32:27 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KTOtG-00038C-E1 for qemu-devel@nongnu.org; Wed, 13 Aug 2008 18:32:27 -0400 Received: from [199.232.76.173] (port=33361 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KTOtG-000388-3X for qemu-devel@nongnu.org; Wed, 13 Aug 2008 18:32:26 -0400 Received: from mtaout01-winn.ispmail.ntl.com ([81.103.221.47]:45100) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1KTOtF-0003MX-QS for qemu-devel@nongnu.org; Wed, 13 Aug 2008 18:32:26 -0400 Received: from aamtaout04-winn.ispmail.ntl.com ([81.103.221.35]) by mtaout01-winn.ispmail.ntl.com with ESMTP id <20080813223224.GLQV777.mtaout01-winn.ispmail.ntl.com@aamtaout04-winn.ispmail.ntl.com> for ; Wed, 13 Aug 2008 23:32:24 +0100 Received: from implementation.famille.thibault.fr ([82.21.96.230]) by aamtaout04-winn.ispmail.ntl.com with ESMTP id <20080813223224.SIDD18637.aamtaout04-winn.ispmail.ntl.com@implementation.famille.thibault.fr> for ; Wed, 13 Aug 2008 23:32:24 +0100 Received: from samy by implementation.famille.thibault.fr with local (Exim 4.69) (envelope-from ) id 1KTOtE-0002La-Tj for qemu-devel@nongnu.org; Thu, 14 Aug 2008 00:32:24 +0200 Date: Wed, 13 Aug 2008 23:32:24 +0100 From: Samuel Thibault Subject: Re: [Qemu-devel] [PATCH] Flush pending AIO on reboot and shutdown. Message-ID: <20080813223224.GG4766@implementation> References: <20080813132358.17672.68212.stgit@gleb-debian.qumranet.com.qumranet.com> <48A2E732.4040501@codemonkey.ws> <20080813141346.GC17567@minantech.com> <48A2F89A.20609@codemonkey.ws> <20080813152329.GG17567@minantech.com> <48A30395.6060706@codemonkey.ws> <20080813183544.GA29998@minantech.com> <48A32FF1.5040302@codemonkey.ws> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <48A32FF1.5040302@codemonkey.ws> 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 Anthony Liguori, le Wed 13 Aug 2008 14:03:13 -0500, a écrit : > From the guest's perspective, data is only written to disk after a > write completion has be issued. I think it's worse for data to end up > being written to disk without that completion ever being seen by the > guest. Well, the guest is notified asynchronously with real hardware, so it may miss a completion too. Samuel