I have this problem with vfilers. All the vfilers in our environment have their root path in qtree's. Is there a way to migrate the root path of a vfiler from a qtree to a volume?
You can use snapmirror (volume SnapMirror® (VSM) or qtree SnapMirror® (QSM)), ndmpcopy to move the vfiler unit from source to destination with in the same filer.
Please refer this KB article for more detailed steps,