XEN:Could not find bridge 解决办法

Error: Device 0 (vif) could not be connected. Could not find bridge device xenbr0

问题说明：centos下xenbr0未启动，导致xen中虚拟机不能正常启动。

解决办法：运行一下命令:

            #brctl show              //查看xen网桥是否启动

            #/etc/xen/scripts/network-bridge  start             //启动网桥