So there is a global zone, and we need to create an FS on a non-global zone. Also we need the new FS in a new DG/Volume inside the DG of the zone (if we see it from the global zone). How to do it? Using vx. (Or at least an authentic howto needed :D )
You create a file system under Solaris global zone with one of these commands.
You can then use zonecfg to make that file system visible in non global zones.