-drive file=os.img,if=none,id=disk \
-device ide-hd,drive=disk,bootindex=0 \
-chardev socket,id=char0,reconnect=1,path=/tmp/vhost.socket \
-drive file=os.img,if=none,id=disk \
-device ide-hd,drive=disk,bootindex=0 \
-chardev socket,id=char0,reconnect=1,path=/tmp/vhost.socket \