virt-p2v does not support raid devices in /etc/fstab and fails with inspection error "virt-v2v: No root device found in this operating system image."
This was has been fixed upstream with an enhancement to libguestfs inspection. Please check out the libguestfs-1.14.6-1.fc16: https://admin.fedoraproject.org/updates/FEDORA-2011-16843/libguestfs-1.14.6-1.fc16
Long since pushed to stable, closing.