[root@terraria ~]# virsh list

 Id    Name                           State

----------------------------------------------------

[root@terraria ~]# virsh uri

lxc:///

[root@terraria ~]# cat helloworld.xml 

<domain type='lxc'>

  <name>helloworld</name>

  <memory>102400</memory>

  <os>

    <type>exe</type>

    <init>/bin/sh</init>

  </os>

  <devices>

    <console type='pty'/>

  </devices>

</domain>

[root@terraria ~]# virsh define helloworld.xml 

Domain helloworld defined from helloworld.xml

[root@terraria ~]# virsh start helloworld

error: Failed to start domain helloworld

error: internal error guest failed to start: PATH=/bin:/sbin TERM=linux container=lxc-libvirt container_uuid=791640de-95a9-082c-7292-c55106bcdca9 LIBVIRT_LXC_UUID=791640de-95a9-082c-7292-c55106bcdca9 LIBVIRT_LXC_NAME=helloworld /bin/sh

error receiving signal from container: Input/output error

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As you can see, I am getting an error.  How do I go about diagnosing this error?  This is a fresh install so the only thing I have been using this machine for is for LXC/libvirt testing.