编译libvirt环境

./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var --libdir=/usr/lib64 --libexecdir=/usr/lib64/libvirt\--without-uml \--without-openvz \--without-vmware \--without-phyp \--without-xenapi \--without-vbox \--without-lxc \--without-esx  \--without-hyperv

遇到8000连接错误，可以尝试下面的操作：
sed --in-place 's/#(xend-http-server no)/(xend-http-server yes)/' /etc/xen/xend-config.sxp   
sed --in-place 's/#(xend-address localhost)/(xend-address localhost)/' /etc/xen/xend-config.sxp
之后重启Xend

修改替换 /etc/libvirt/libvirtd.conf 后启动libvirtd

加载Dom0后端驱动模块
modprobe blktap
modprobe blkbk
modprobe xenblk
modprobe netbk
modprobe gntdev

chkconfig xencommons on