From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: [Qemu-devel] Re: [PATCH] Add support for a configuration file Date: Wed, 14 May 2008 09:06:01 -0500 Message-ID: <482AF1C9.40409@us.ibm.com> References: <1210713545-11916-1-git-send-email-aliguori@us.ibm.com> <482A1F1C.2020902@codemonkey.ws> <482AA268.9080501@bellard.org> <482ABF6E.6090100@qumranet.com> <482ADA80.3000309@bellard.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net, qemu-devel@nongnu.org, Avi Kivity , Paul Brook To: Fabrice Bellard Return-path: In-Reply-To: <482ADA80.3000309@bellard.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org Fabrice Bellard wrote: > Avi Kivity wrote: >> Fabrice Bellard wrote: >>> >>> I prefer: >>> >>> drive.file=foo.img >>> drive.if=scsi >>> >> >> That doesn't support multiple drives very well. > > Right, I realized it afterwards ! > > I suggested it because my original plan for the configuration file was > based on this syntax with a strong inspiration from the OpenFirmware > device tree. The idea was that the object name ("drive" here) had no > hardcoded meaning, except for some predefined object names in order to > keep a kind of backward compatibility with the current QEMU options. > In order to create a new drive for example, you just have to do: > > mydrive.class=drive > mydrive.if=scsi > mydrive.file=abc.img > > the "class" field is used to select the device model. Then all the > other parameters are used to initialize the device model. That way it > is possible to keep the compatibility with the existing options and > add a provision to instanciate arbitrary new device models, such as: I like this syntax primarily because it provides a means to associate arbitrary data with a VM. It also provides a sane way to keep track of which device is which so that the "config" can be updated while the VM is running. I'll update the patch. Regards, Anthony Liguori > mynetworkcard.class="ne2000pci" > mynetworkcard.bus=1 # pci bus selection > mynetworkcard.macaddr=00:01:02:03:04:05 > mynetworkcard.vlan=1 > > I will strongly support configuration file formats having this property. > > Regards, > > Fabrice. > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/