booting oneiric in xen hvm domU

Stefan Bader stefan.bader at
Tue Sep 20 07:46:42 UTC 2011

On 19.09.2011 21:17, Mark Dokter wrote:
> Hello!
> I tried to install an Ubuntu Oneiric xen domU with the beta1 iso, daily
> iso and netboot (also daily and beta1).
> All images require xen_emul_unplug=unnecessary as kernel boot parameter
> to see disks and network devices in the domU.
> Can anybody confirm this behaviour? I was wondering because on [1] it is
> a line that says "[zulcss] Test xen hvm CD install on amd64: DONE"
> My testing was done on a oneiric 64bit dom0.
> kind regards,
> Mark
> [1]

That sort of is normal and depends on the guest. Except the virtual kernel, all
other kernels have the blockfront and netfront drivers only compiled as a
module. If one wants to use them, then those need to go into the list of early
loaded modules. Or as with the argument, xen gets told to keep the emulated disk
and network devices.
But it would be worth documenting this at least in the release notes, I guess.

Note, that emulated net seems still have some issues under load the last time I


More information about the ubuntu-server mailing list