http://www.freebsd.org/doc/en/books/handbook/vinum-root.html
http://www.schmut.com/howto/freebsd-software-raid-howto
http://devel.reinikainen.net/docs/how-to/Vinum/#Chapter3.1
http://www.blognow.com.au/q/61953/RAID_5_Array_using_gvinum_on_FreeBSD.html
http://www.onlamp.com/pub/a/bsd/2005/11/10/FreeBSD_Basics.html?page=1
Gvinum problems
Rename doesn't appear to work. Trying to reproduce on other hardware.
Handbook is a bit of a mess.
- Despite using gvinum everywhere as recommended in 20.1, you need to use 'vinum' in the bsdlabel.
- Too many references to 4.X
- Too much nonsense about nomenclature, not enough actual how-to or why-to.
- Remind not to use identical names.