[ovirt-devel] are there any ways to disable the log file?

"Since oVirt 3.5.0 (VDSM 4.16.0), VDSM does not enable the overly verbose libvirt debug logs automatically." from http://www.ovirt.org/develop/developer-guide/vdsm/log-files/. So my problem is. Each running VM has it's command line logged in /var/log/libvirt/qemu/${vmname}. And now I'd like to disable this log function, that is to say, not to record the QEMU command line of VM. So could oVirt or VDSM disable this qemu command line log file just like libvirt debug logs? Thank you.