linhoney

I have searched for a long time on google~~~
And use this command virt-install to install Guest OS on xen.

then ,problem coming~~~~
the following is the output of the programme:

Starting install...
libvir: Xen Daemon error : GET operation failed:
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 /var/lib/xen/images/RootkitVM.img failed')
virDomainCreateLinux() failed POST operation failed: (xend.err 'Device 51712 (vbd) could not be connected. losetup /dev/loop0 /var/lib/xen/images/RootkitVM.img failed')
Domain installation may not have been
successful.  If it was, you can restart your domain
by running 'virsh start RootkitVM'; otherwise, please
restart your installation.
Sat, 01 Mar 2008 10:10:53 ERROR    virDomainCreateLinux() failed POST operation failed: (xend.err 'Device 51712 (vbd) could not be connected. losetup /dev/loop0 /var/lib/xen/images/RootkitVM.img failed')
Traceback (most recent call last):
  File "/usr/sbin/virt-install", line 485, in <module>
    main()
  File "/usr/sbin/virt-install", line 449, in main
    dom = guest.start_install(conscb,progresscb)
  File "/usr/lib/python2.5/site-packages/virtinst/Guest.py", line 724, in start_install
    return self._do_install(consolecb, meter)
  File "/usr/lib/python2.5/site-packages/virtinst/Guest.py", line 741, in _do_install
    self.domain = self.conn.createLinux(install_xml, 0)
  File "/usr/lib/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 /var/lib/xen/images/RootkitVM.img failed')

Could anyone tell me what is wrong?