hi all, Building layered volumes bottom is not recommended (cannot stress this enough) due to the complications involved and is probably not even supported hence lack of documentation. saying that, it can be done.
The trick is to build the bottom layer sd's,plexes & vols, then set the
volumes to be sub volumes :
vxedit -g datadg set layered=on vol01-L02.
Then build the top layer subdisks and associate the subvolumes, such as
vxmake -g datadg sd vol01-S01 vol01-L01,0,5myou should then be able to proceed with the upper layer plex and volume
This is a long tedious process that is easily to get wrong (many have) - as i said before, play with fire, get burnt. be careful.