Okay, as always, trying to express a problem in details to someone else (rubber ducking) gave me an idea.
I wondered, since the folder being "locked" to NFS was the first one in the mount, if this could be the cause of the problem, and not the POSIX ACLs, so I tried prepending a "dummy" folder to the list, i.e. none /Archive aufs ro,noauto,nofail,xino=/run/aufs.xino.archive,br=/dummy=ro:/titanic/Ripped/Processed=ro:/tit<snip> So far, this fixed it. The "Processed" folder stays accessible via NFS after I've mounted /Archive on the server. Very strange :) Perhaps there's some file locking going on in the first directory branch, even if it's read-only? Daniel ------------------------------------------------------------------------------ New Year. New Location. New Benefits. New Data Center in Ashburn, VA. GigeNET is offering a free month of service with a new server in Ashburn. Choose from 2 high performing configs, both with 100TB of bandwidth. Higher redundancy.Lower latency.Increased capacity.Completely compliant. http://p.sf.net/sfu/gigenet