From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=39097 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OESc9-0001Jl-08 for qemu-devel@nongnu.org; Tue, 18 May 2010 15:38:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OESc4-000503-CR for qemu-devel@nongnu.org; Tue, 18 May 2010 15:38:01 -0400 Received: from mail-vw0-f45.google.com ([209.85.212.45]:39277) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OESc4-0004zv-7R for qemu-devel@nongnu.org; Tue, 18 May 2010 15:38:00 -0400 Received: by vws1 with SMTP id 1so2158013vws.4 for ; Tue, 18 May 2010 12:37:59 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: <1274203124-14318-1-git-send-email-avi@redhat.com> Date: Tue, 18 May 2010 20:37:59 +0100 Message-ID: From: Stefan Hajnoczi Content-Type: text/plain; charset=ISO-8859-1 Subject: [Qemu-devel] Re: [PATCH +stable] block: don't attempt to merge overlapping requests List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Avi Kivity Cc: Kevin Wolf , qemu-devel@nongnu.org, kvm@vger.kernel.org, Christoph Hellwig I just caught up on mails and saw you had already mentioned that overlapping writes from the guest look fishy in the "the >1Tb block issue". Cache mode might still be interesting because it affects how guest virtio-blk chooses queue ordering mode. Stefan