From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KOX4K-0006zu-60 for qemu-devel@nongnu.org; Thu, 31 Jul 2008 08:15:44 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KOX4I-0006zi-Ni for qemu-devel@nongnu.org; Thu, 31 Jul 2008 08:15:43 -0400 Received: from [199.232.76.173] (port=33245 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KOX4I-0006zf-Jt for qemu-devel@nongnu.org; Thu, 31 Jul 2008 08:15:42 -0400 Received: from mail2.shareable.org ([80.68.89.115]:51542) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1KOX4I-0005TP-Gu for qemu-devel@nongnu.org; Thu, 31 Jul 2008 08:15:42 -0400 Date: Thu, 31 Jul 2008 13:15:37 +0100 From: Jamie Lokier Subject: Re: [Qemu-devel] PATCH: Control over drive open modes for backing file Message-ID: <20080731121537.GA16481@shareable.org> References: <20080731113120.GJ23888@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080731113120.GJ23888@redhat.com> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Daniel P. Berrange" , qemu-devel@nongnu.org Daniel P. Berrange wrote: > - Adds a new option to the '-drive' command line parameter to specify > how the file should be opened, and any fallback I would like to open the main file read-write, but the backing file read-only, as the backing file is shared among many images. Can your options choose that? The monitor 'commit' command implies that the (first) backing file is opened writable, if the main file is. -- Jamie