@@ -652,8 +652,12 @@ function start_nova_compute() {

         local log_filters="1:libvirt 1:qemu 1:conf 1:security 3:event 3:json 3:file 1:util"

         local log_outputs="1:file:/var/log/libvirt/libvirtd.log"

         # Enable server side traces for libvirtd

-        echo "log_filters=\"$log_filters\"" | sudo tee -a /etc/libvirt/libvirtd.conf

-        echo "log_outputs=\"$log_outputs\"" | sudo tee -a /etc/libvirt/libvirtd.conf

+        if ! grep -q "log_filters=\"$log_filters\"" /etc/libvirt/libvirtd.conf; then

+            echo "log_filters=\"$log_filters\"" | sudo tee -a /etc/libvirt/libvirtd.conf

+        fi

+        if ! grep -q "log_outputs=\"$log_outputs\"" /etc/libvirt/libvirtd.conf; then

+            echo "log_outputs=\"$log_outputs\"" | sudo tee -a /etc/libvirt/libvirtd.conf

+        fi

         # The group **$LIBVIRT_GROUP** is added to the current user in this script.

         # Use 'sg' to execute nova-compute as a member of the **$LIBVIRT_GROUP** group.