Comment 49 for bug 1393842

This bug still affects 14.04. Upgrading libvirt to 1.2.2-0ubuntu13.1.19 does not fix it.

$ dpkg -l | grep libvirt
ii libvirt-bin 1.2.2-0ubuntu13.1.19 amd64 programs for the libvirt library
ii libvirt0 1.2.2-0ubuntu13.1.19 amd64 library for interfacing with different virtualization systems

$ lsb_release -rd
Description: Ubuntu 14.04.4 LTS
Release: 14.04

$ apt-cache policy libvirt-bin
libvirt-bin:
  Installed: 1.2.2-0ubuntu13.1.19
  Candidate: 1.2.2-0ubuntu13.1.19
  Version table:
 *** 1.2.2-0ubuntu13.1.19 0
        500 http://gh.archive.ubuntu.com/ubuntu/ trusty-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1.2.2-0ubuntu13.1.17 0
        500 http://gh.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
     1.2.2-0ubuntu13.1.16 0
        500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
     1.2.2-0ubuntu13 0
        500 http://gh.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

Full error message:

Unable to complete install: 'internal error: process exited while connecting to monitor: qemu-system-x86_64: -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channel/target/centos7.0.org.qemu.guest_agent.0,server,nowait: Failed to bind socket: No such file or directory
qemu-system-x86_64: -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channel/target/centos7.0.org.qemu.guest_agent.0,server,nowait: chardev: opening backend "socket" failed
'

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 90, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/create.py", line 2277, in _do_async_install
    guest.start_install(meter=meter)
  File "/usr/share/virt-manager/virtinst/guest.py", line 501, in start_install
    noboot)
  File "/usr/share/virt-manager/virtinst/guest.py", line 416, in _create_guest
    dom = self.conn.createLinux(start_xml or final_xml, 0)
  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 3606, in createLinux
    if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self)
libvirtError: internal error: process exited while connecting to monitor: qemu-system-x86_64: -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channel/target/centos7.0.org.qemu.guest_agent.0,server,nowait: Failed to bind socket: No such file or directory
qemu-system-x86_64: -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channel/target/centos7.0.org.qemu.guest_agent.0,server,nowait: chardev: opening backend "socket" failed