[Fedora-xen] Unable to install domU on Fedora 8

[Pete Kay]

Hi,
When trying to install Cent domU on fedora 8 dom0, I am getting the
following error.  I have tried both graphics support Yes and No

[root@bogon pete]# virt-install
What is the name of your virtual machine? serverA
 How much RAM should be allocated (in megabytes)? 256
 What would you like to use as the disk (file path)? /dev/serverA
 Would you like to enable graphics support? (yes or no) no
 What is the install location?
http://mirror.centos.org/centos-5/5/os/x86_64/

Starting install...
libvir: Xen Daemon error : GET operation failed:
Retrieving file CentOS...                                       590 kB 00:26

Retrieving file vmlinuz.. 100% |=========================| 1.8 MB
01:10
Retrieving file initrd.im 100% |=========================| 5.2 MB
03:17
libvir: Xen Daemon error : GET operation failed:
libvir: Xen Daemon error : POST operation failed: (xend.err 'Device 51712
(vbd) could not be connected. losetup /dev/loop0 /dev/serverA failed')
virDomainCreateLinux() failed POST operation failed: (xend.err 'Device 51712
(vbd) could not be connected. losetup /dev/loop0 /dev/serverA failed')
Domain installation may not have been
 successful.  If it was, you can restart your domain
 by running 'virsh start serverA'; otherwise, please
 restart your installation.
Thu, 05 Jun 2008 03:09:50 ERROR    virDomainCreateLinux() failed POST
operation failed: (xend.err 'Device 51712 (vbd) could not be connected.
losetup /dev/loop0 /dev/serverA failed')
Traceback (most recent call last):
  File "/usr/bin/virt-install", line 502, in <module>
    main()
  File "/usr/bin/virt-install", line 462, in main
    dom = guest.start_install(conscb,progresscb)
  File "/usr/lib/python2.5/site-packages/virtinst/Guest.py", line 813, in
start_install
    return self._do_install(consolecb, meter)
  File "/usr/lib/python2.5/site-packages/virtinst/Guest.py", line 834, in
_do_install
    self.domain = self.conn.createLinux(install_xml, 0)
  File "/usr/lib64/python2.5/site-packages/libvirt.py", line 573, in
createLinux
    if ret is None:raise libvirtError('virDomainCreateLinux() failed',
conn=self)
libvirtError: virDomainCreateLinux() failed POST operation failed: (xend.err
'Device 51712 (vbd) could not be connected. losetup /dev/loop0 /dev/serverA
failed')
[root@bogon pete]#

I would appreciate any help on getting xen to work.

Thanks,
Pete