1. I created a virtual machine and add channel:<div><div>&nbsp; &lt;channel type='unix'&gt;</div><div>&nbsp; &nbsp; &nbsp; &lt;source mode='bind' path='/var/lib/libvirt/qemu/r-22-VM.agent'/&gt;</div><div>&nbsp; &nbsp; &nbsp; &lt;target type='virtio' name='r-22-VM.vport'/&gt;</div><div>&nbsp; &nbsp; &nbsp; &lt;address type='virtio-serial' controller='0' bus='0' port='1'/&gt;</div><div>&nbsp; &nbsp; &lt;/channel&gt;</div></div><div><br></div><div>2. Use scripts,run this scripts is no error output</div><div><div>&nbsp;#!/usr/bin/python</div><div>&nbsp;import socket</div><div>&nbsp;s=socket.socket(socket.AF_UNIX,socket.SOCK_STREAM)</div><div>&nbsp;s.connect("/var/lib/libvirt/qemu/r-22-VM.agent")</div><div>&nbsp;s.send("test\n")</div><div>&nbsp;s.close</div></div><div><br></div><div>3. But i not read date in vm device /dev/vport0p1 (vm is run)</div><div><br></div><div>My version, libvirt: 1.2.13.1 &nbsp;qmeu: 2.3.0 &nbsp;system: centos 6.5</div><div><br></div><div>This test &nbsp;in libvirt 1.0.5.7 qemu 1.5.3 is success.</div><div><br></div><div>Please help , thanks</div><div><br></div><div><br></div>