注意kvm在安装虚机的时候不能把存放虚机的文件放在/root 下面

如果放在/root下面会报错：

WARNING  KVM acceleration not available, using 'qemu'

Starting install...
Creating storage file c01                                                                                                                                                                                          |  10 GB     00:00     
ERROR    internal error Process exited while reading console log output: char device redirected to /dev/pts/4
2016-11-05T06:58:45.624301Z qemu-kvm: -drive file=/root/VHOSTS/c01,if=none,id=drive-virtio-disk0,format=raw,cache=none: could not open disk image /root/VHOSTS/c01: Permission denied

Domain installation does not appear to have been successful.
If it was, you can restart your domain by running:
  virsh --connect qemu:///system start c01
otherwise, please restart your installation.