Root on vinum volume on freebsd6.0/sparc64

[Stephan Zaubzer]

Hi!
Is here a way to place the root partition of freebsd in a mirrored vinum 
volume? I have read tutorials which explain the procedure in more or 
less detail, but all the tutorials seem to deal with the x86 version. 
For example the tutorials assume that freebsd is installed on a slice 
and that the first 8 sectors of this slice contain the bootstrap. And it 
tells you to move some partitions a few sectors.
On sparc64 I did neither succeed to create overlapping partitions nor is 
there the possibility to shift a partition a few sectors (to leave space 
for the vinum configuration data). Has anyone experience with a root 
partition on a vinum volume on sparc64?
Regards
Stephan