Comment 13 for bug 839492

@Axel,
I found that here:

http://lists.debian.org/debian-backports/2010/01/msg00028.html

But you're right, that's from january 2010. I'm very glad I'm wrong, because I like using xen-tools.

Anyway, about your boot problem. What if you specify root=/dev/sda2 in your grub conf? Are you using a xen kernel in the domU perhaps? Since 2.6.32 you don't have to. I can vaguely remember that the xen kernels didn't name their disks xvda, but just sda. I have several DomU's running that still use /dev/sda as disk device.