The TALPA molehill

Has two parts :

-Moving least recently used files on slower/cheap media.
-Bring them back when are needed.
Problems:

a. creating a list/database of candidate files
can be done when High Water Mark is reached:
1. by using find -atime (not optimal but can have rationale)
2. by inotify/FAM
3. TALPA/Dazuko

b. bringing back files
block requesting process until file is automatic or manual recovered from storage(robotic library,tapes, opticals,slow disk or inner zone of disk)