I believe the on-disk structure for vinum and gvinum are the same so
you can move volumes unchanged from one to the other. I have moved vinum
volumes from 4.11 to 6.1 without any problem (including mirrored, striped
and raid-5 on the same host). You have to move the mount device from
/dev/vinum
I have a 5.2.1 box that I want to upgrade to 5.5-RELENG and in doing so
need to upgrade/migrate the current vinum setup to gvinum. It is a
simple vinum mirror (just 2 drives with one vinum slice each). Having
done some googling on the matter I really haven't found a definitive
"best approach" to do
