[Xen-users] Ubuntu 11.04 64-bit HVM on xen-unstable 23842

[AP <apxeng@xxxxxxxxx>]

I am running xen-unstable (change log 23842) and linux 3.0 (ubuntu
10.10) on a Lenovo x220. I am having trouble installing ubuntu 11.04
64-bit with the following config file:

builder='hvm'
memory = 1024
name = 'ubuntu'
vcpus = 2
pae = 1
acpi = 1
apic = 1
vif = [ '' ]
disk = 
['/dev/vg/ubuntu,raw,hda,w','/var/xen/isos/ubuntu-11.04-server-amd64.iso,raw,hdc,devtype=cdrom,r']
vnc = 0
sdl = 1

Both the disk and network devices are not recognized by the installer.
The disk is of course the killer. I get a message saying "No disk
driver was detected" and a list of drivers to choose from. None of the
drivers work. Is something wrong with my configuration file? I have
also included the qemu log file output

BTW, I was able to install CentOS 5.6 and Windows 7 without any issues.

Thanks,
AP

LOG OUTPUT
---------------------
videoram option does not work with cirrus vga device model. Videoram set to 4M.
Using file /dev/vg/ubuntu in read-write mode
Strip off blktap sub-type prefix to
/var/xen/isos/ubuntu-11.04-server-amd64.iso (drv 'aio')
Using file /var/xen/isos/ubuntu-11.04-server-amd64.iso in read-only mode
Watching /local/domain/0/device-model/20/logdirty/cmd
Watching /local/domain/0/device-model/20/command
Watching /local/domain/20/cpu
qemu_map_cache_init nr_buckets = 10000 size 4194304
shared page at pfn feffd
buffered io page at pfn feffb
Guest uuid = 53650e46-1301-4a00-964b-ad0852ad2026
populating video RAM at ff000000
mapping video RAM from ff000000
Register xen platform.
Done register platform.
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
xs_read(/local/domain/0/device-model/20/xen_extended_power_mgmt): read error
medium change watch on `hdc' (index: 1):
aio:/var/xen/isos/ubuntu-11.04-server-amd64.iso
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
Log-dirty: no command yet.
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
vcpu-set: watch node error.
xs_read(/local/domain/20/log-throttling): read error
qemu: ignoring not-understood drive `/local/domain/20/log-throttling'
medium change watch on `/local/domain/20/log-throttling' - unknown
device, ignored
cirrus vga map change while on lfb mode
mapping vram to f0000000 - f0400000
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is ro state.
Unknown PV product 3 loaded in guest
PV driver build 1
region type 1 at [c100,c200).
region type 0 at [f3001000,f3001100).
squash iomem [f3001000, f3001100).

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