On Tue, 22 Mar 2011, Christoph Egger wrote: [snip]
I'm also interested in how to use qcow images to run qemu / xen guests.
That's probably more jmcneill's libvdisk stuff which uses pud(4) so that a userland process can be used to manage a block device, e.g. a process that understands .vhd files but allows them to be accessed in a similar way to vnd(4). Similar to blktap AIUI. A couple of developers were looking at his work, I'm not sure how far it got.
-- Stephen