[Xen-users] Installing problem with only a LVM logical volume as DomU partition and no complete disk

[Bas Mevissen <abuse@xxxxxxxxxxxxxx>]

Hi,

I've created a DomU to run Fedora on a LVM logical volume. On the DomU, 
this LVM logical volume is a partition and not a disk, like this:
(on the Dom0)
[root@beast ~]# lvs
  LV      VG     Attr   LSize   Origin Snap%  Move Log Copy%
  devel   volume -wi-ao 128.00G

[root@beast ~]# cat /etc/xen/devel.xen
(...)
disk = [ 'phy:mapper/volume-devel,sda1,w' ]
(...)

The Fedora installer will try to read the partition table of /dev/sda 
and fails because it doesn't exist. Creating a new partition succeeds 
somehow, but the installer obviously cannot write the just created 
partition table and fails.
I've succeeded in getting this setup to run by copying an already 
installed system on this partition. This seems to work fine, but there 
is still no /dev/sda or any sign of a disk found.
What I would have expected is to find some hard disk emulation and a 
/dev/sda containing a valid partition table. So then I could install the 
OS directly on the partition.
Can somebody shine a light on this?

Regards,

Bas.

P.S. Just in case you are wondering why I would like to do this:
I could create a disk /dev/sda on this LVM volume. But that would 
complicate resizing. Now, I can do that easily from the Dom0 with 
resize2fs and lvresize.

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