From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KdPme-0004YJ-Gx for qemu-devel@nongnu.org; Wed, 10 Sep 2008 09:31:00 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KdPmd-0004Wy-9n for qemu-devel@nongnu.org; Wed, 10 Sep 2008 09:30:59 -0400 Received: from [199.232.76.173] (port=55344 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KdPmc-0004Wf-UE for qemu-devel@nongnu.org; Wed, 10 Sep 2008 09:30:59 -0400 Received: from mx2.redhat.com ([66.187.237.31]:53652) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1KdPmb-0004uU-U0 for qemu-devel@nongnu.org; Wed, 10 Sep 2008 09:30:58 -0400 Message-ID: <48C7CB05.8070107@redhat.com> Date: Wed, 10 Sep 2008 15:26:29 +0200 From: Chris Lalancette MIME-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH 3/10] Add bdrv_flush_all() References: <1220989802-13706-1-git-send-email-aliguori@us.ibm.com> <1220989802-13706-4-git-send-email-aliguori@us.ibm.com> In-Reply-To: <1220989802-13706-4-git-send-email-aliguori@us.ibm.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit 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 Cc: Chris Wright , Uri Lublin , Anthony Liguori , kvm@vger.kernel.org Anthony Liguori wrote: > This patch adds a bdrv_flush_all() function. It's necessary to ensure that all > IO operations have been flushed to disk before completely a live migration. > > N.B. we don't actually use this now. We really should flush the block drivers > using an live savevm callback to avoid unnecessary guest down time. Simple enough, and follows the pattern in the KVM migration. Chris Lalancette