Comment 23 for bug 886521

Hmm. So we have xen configuration files set up for PV-on-HVM (in case the guest OS can support it, as we have no way of knowing what the guest OS is, as that's provided by the client), and our experience is that Lucid does not install from the install CDs. Looking at the code, it can't be the 'unplug' stuff, as that is only introduced in the Natty kernel, unless the installer CD is trying to be clever by using the Natty backport kernel (which doesn't work for the reasons listed above). We assumed this was essentially the same problem, but perhaps we need to revisit what is happening.

What I think I would now expect is that the Lucid kernel does not contain PV-on-HVM PV drivers (i.e. CONFIG_XEN_BLKDEV_FRONTEND and CONFIG_XEN_NETDEV_FRONTEND are there for paravirtualised mode, not PV on HVM), so it should all run through emulated drivers, and install on /dev/sda, irrespective of the PV driver settings in the config file. Is that what you would expect too Boris? (that's what happens on, e.g. Centos 5). However that's not what's happening.