This is really a udev bug that was fixed (at least) in Natty. udev 167-0ubuntu3 has
# virtio-blk KERNEL=="vd*[!0-9]", ATTRS{serial}=="?*", ENV{ID_SERIAL}="$attr{serial}", SYMLINK+="disk/by-id/virtio-$env{ID_SERIAL}" KERNEL=="vd*[0-9]", ATTRS{serial}=="?*", ENV{ID_SERIAL}="$attr{serial}", SYMLINK+="disk/by-id/virtio-$env{ID_SERIAL}-part%n" in 60-persistent-storage.rules -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/604335 Title: grub-pc.postinst script fails to detect virtio vda disk in KVM guest To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/604335/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs