Not a big deal.. I was just saying that many of the partition tools and others have
already been updated. The "what does it take" to update them is somewhat
moot; as it has been done. Updating LVM was a bit more involved than
mkfs.ext3. Updating virtio and qemu was also somewhat intrusive.
But for those tools that haven't been updated they will either need to use libblkid
(like e2fsprogs does) or use the new "IO topology" block ioctls. Please see this
for more info (contains the specific ioctls and more): http://people.redhat.com/msnitzer/docs/io-limits.txt