[libvirt-users] Fwd: Libvirt adds extra parameters in domain XML

Marina Danial marinadanial at gmail.com
Mon Oct 17 12:29:10 UTC 2016

I have a predetermined set of commands that I want to launch qemu with:

sudo `which qemu-system-x86_64` -m 4G $(IMAGE) -enable-kvm \
-nographic \
-net nic,model=virtio,netdev=net0,macaddr=$(MAC),vlan=0 \
-netdev tap,id=net0,ifname=tap01,vhost=on,script=no,downscript=no \
-net nic,model=virtio,netdev=net1,macaddr=$(MANAGE_MAC),vlan=1 \
-netdev tap,id=net1,ifname=tap02,vhost=on,script=no,downscript=no \

I dont need any extra configuration from libvirt. is this possible? Or can
anyone help with a possible xml configuration ?

On Thu, Oct 13, 2016 at 1:13 PM, Martin Kletzander <mkletzan at redhat.com>

> On Thu, Oct 13, 2016 at 11:49:44AM +0200, Marina Danial wrote:
>> Hello,
>> In my C++ code, I generate my own domain XML file and I
>> use virDomainCreateXML or virDomainDefineXML to launch my qemu VM.
>> However,
>> when I get to check which commands are sent to the qemu commandline, I
>> find
>> that libvirt has added so many extra parameters to the ones I have already
>> set. How can I prevent libvirt from adding any extra parameters to the
>> ones
>> I originally defined in the domain XML?
> What problems are you having with those?  What specific ones are
> problematic for you?  Libvirt adds a lot of things so that the domain is
> predictable, it can talk to it later on and so on.  Some of them are
> adding the same things you would have there without -no-defconfig and
> similar.  Just so we can guarantee some compatibility etc.
> Help will be highly appreciated.
>> Thanks
> _______________________________________________
>> libvirt-users mailing list
>> libvirt-users at redhat.com
>> https://www.redhat.com/mailman/listinfo/libvirt-users
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