[libvirt-users] centos6.5 libvirt 1.2.14 virsh hang

hi all： my environment is centos6.5 libvirt version is 1.2.14-1 qemu version is 1.7.0-1 I use openstack create a windows guest about two days later I run virsh list but the the process is hang virsh list can not return any thing it hang look like this： then I run /etc/init.d/libvirtd restart it show libivrtd stop faild and start failed i will use the gdb and find the gdb can not print any process stack look like this： I run /etc/init.d/libvirtd status it show libvired dead but subsys locked who can help me ? thans