/ must be on a partition or LV that will be formatted. Reusing an existing / is not allowed.

[Chris Adams]

Once upon a time, David Lehman <dlehman at redhat.com> said:
> I didn't realize lvm guarantees all lvs are allocated from adjacent
> extents.

When extents are available, they are allocated sequentially as you
create LVs.  There's no guarantee (since the extents could be fragmented
if you have created and removed LVs), but on an empty VG, you'll get
them that way.

-- 
Chris Adams <cmadams at hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.