執行以下步驟：
（1）在host OS上面創建新的目錄和在這個目錄里面創建一個文件。
root@kvm:~# mkdir /tmp/shared
root@kvm:~# touch /tmp/shared/file
（2）在停止KVM的實例后，添加下面的配置
root@kvm:~# virsh edit kvm1
...
<devices>
...
<filesystem type='mount' accessmode='passthrough'> <source dir='/tmp/shared'/> <target dir='tmp_shared'/> </filesystem>
...
</devices>
...
Domain kvm1 XML configuration edited.
（3）啟動VM虛擬機：
root@kvm:~# virsh start kvm1
Domain kvm1 started
（4）執行以下命令連接控制台
root@kvm:~# virsh console kvm1
Connected to domain kvm1
Escape character is ^]
Debian GNU/Linux 8 debian ttyS0
debian login: root
Password:
...
（5）確保9p和virtio內存驅動已經加載
root@debian:~# lsmod | grep 9p
9pnet_virtio 17006 0
9pnet 61632 1 9pnet_virtio
virtio_ring 17513 3 virtio_pci,virtio_balloon,9pnet_virtio
virtio 13058 3 virtio_pci,virtio_balloon,9pnet_virtio
（6）掛載共享的目錄到/mnt
root@debian:~# mount -t 9p -o trans=virtio tmp_shared /mnt
（7）列出剛剛掛載的東西
root@debian:~# mount | grep tmp_shared
tmp_shared on /mnt type 9p (rw,relatime,sync,dirsync,trans=virtio)
（8）查看下我們在第一步創建的文件是否能看的到
root@debian:~# ls -la /mnt/
total 8
drwxr-xr-x 2 root root 4096 Mar 23 11:25 .
drwxr-xr-x 22 root root 4096 Mar 22 16:28 ..
-rw-r--r-- 1 root root 0 Mar 23 11:25 file
