debugging xenguest-install

I'm attempting to install rawhide to a domU using xenguest-install.
However it hangs on "Searching for Fedora Core installations..."

This is paravirt on ia64.  The installation is running on the xen
(text) console, so there appears to be no way to access the debugging
information anaconda would be stashing on the other virtual consoles,
or in /tmp.

xm list shows domU is spinning; the CPU time is climbing steadily.

Debugging suggestions?

Thanks,
Aron