[libvirt] LXC: init problem

[Robin Green]

I'm trying to install Exherbo Linux in an LXC container using
libvirt. I've basically succeeded, in that I can "virsh console" in
and start sshd, but I haven't managed to boot it starting from
/sbin/init rather than /bin/bash.

If I have the following (I probably should have modified the uuid and
the mac address from the standard example, but that's not relevant):

<domain type='lxc'>
  <name>exherbo</name>
  <uuid>a4047015-171c-ae56-bc1e-57102d4b86bf</uuid>
  <memory>1000000</memory>
  <currentMemory>1000000</currentMemory>
  <vcpu>2</vcpu>
  <os>
    <type arch='i686'>exe</type>
    <init>/sbin/init</init>
  </os>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/libexec/libvirt_lxc</emulator>
    <filesystem type='mount'>
      <source dir='/home/greenrd/exherbo'/>
      <target dir='/'/>
    </filesystem>
    <interface type='network'>
      <mac address='52:54:00:56:64:42'/>
      <source network='default'/>
      <target dev='veth0'/>
    </interface>
    <console type='pty'>
      <target port='0'/>
    </console>
  </devices>
</domain>

and do

virsh --connect lxc:/// start exherbo && virsh --connect lxc:///
console exherbo

nothing appears - then if I press Enter, the container dies.

In pstree all I see that's relevant is:

     ├─libvirt_lxc───libvirt_lxc

so it looks like init dies.

If I run init in gdb in the container I just get:

Starting program: /sbin/init 
Usage: init 0123456SsQqAaBbCcUu

Program exited with code 01.

so I suppose it could be wanting a runlevel as argument. I'm guessing
though that /sbin/init is running in a different mode - telinit mode
- as its PID is not 1.

Is there any way to get an instant console from the virsh start
command, so I can see what's going on?

-- 
Robin