FS directly on top of dm devices?

[Scott Dungan <scott@gps.caltech.edu>]

We recently had an engineer from a large storage vendor suggest that we 
make our file systems directly onto the multipathed devices without 
first creating underlying partitions or using LVM.  Having not run with 
this method in production before, we would like to gather as much 
information as possible first. Initial searches for documentation on 
this method has produced few results, short of a Suse/Novell document 
from 2005 under section 4:

http://support.novell.com/techcenter/sdb/en/2005/04/sles_multipathing.html

Does anyone have any experience with this or can point us to more 
documentation. thoughts or recommendations?

Thanks,

-- 

Scott A Dungan