Thanks for your quick response,
my understanding is driver (maybe in user space) behind /dev/xvda
translates raw disk image format to VHD image format on demand, when
pygrub works on /dev/xvda
What I'm doing is,
1. Create a lvm vdi on iscsi SR,
2. dd a vhd file to this vdi,
3. attach this vdi to a (empty)PV vm as device 0(vbd),
4. mark this vbd bootable,
5. then start this vm
There are errors, it complains, /dev/xvda is not a disk image,
I suspect xapi takes this vdi disk as a raw disk image,
how can I tell xapi this vdi is vhd format?
Does this works by dding vhd file to a lvm logical volume on iscsi SR?
Thanks,
- Anthony
On Mon, 2010-01-25 at 12:40 -0800, Dave Scott wrote:
> Hi,
>
> > As I know Pygrub only works on disk image(may be wrong :-)), Can
> > somebody explain how pygrub works on VHD image file? I just check the
> > pygrub code, it still checks if it's disk image.
> >
> > Thanks in advance.
>
> Xapi attaches the vhd to dom0 as (eg) /dev/xvda and runs pygrub on the block
> device.
>
> Cheers,
> Dave
>
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