xm crashed with Error in <module>()

[fabius]

root@TT:/home# xm create test.cfg
ERROR Internal error: Could not obtain handle on privileged command interface (2 = No such file or directory)
Traceback (most recent call last):
  File "/usr/sbin/xm", line 8, in <module>
    from xen.xm import main
  File "/usr/lib/python2.5/site-packages/xen/xm/main.py", line 61, in <module>
    xc = xen.lowlevel.xc.xc()
xen.lowlevel.xc.Error: (1, 'Internal error', 'Could not obtain handle on privileged command interface (2 = No such file or directory)')

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/sbin/xm
InterpreterPath: /usr/bin/python2.5
Package: xen-utils-3.3 3.3.0-1ubuntu9
ProcAttrCurrent: unconfined
ProcCmdline: /usr/bin/python2.5 /usr/sbin/xm list
ProcEnviron:
 SHELL=/bin/bash
 LANG=it_IT.UTF-8
PythonArgs: ['/usr/sbin/xm', 'list']
SourcePackage: xen-3.3
Title: xm crashed with Error in <module>()
Uname: Linux 2.6.28-11-server i686
UserGroups:

[Uxorious (uxorious)]

I have the same problem on Ubuntu 9.04 AMD64.

While looking into what caused the problem, I noticed that /boot/grub/menu.lst had not been changed to boot into the XEN hypervisor.
Also, there were not XEN kernel images installed, and I could not find any pre-built ones.

[Uxorious (uxorious)]

My problem was indeed caused by not having booted with the Xen hypervisor.

After building my own Xen enabled kernel, xm will work correctly.