[luv-talk] File fragmentation and waste disk space

Assembled cognoscenti; a general question about file-systems and file fragmentation. As the price of storage of bytes drops, do file systems really need the economy of fragmenting files to fill fragmented empty disk space? That is if there is insufficient space between two existing files, the new file is just written in the first interstitial space which is large enough; or the unfragmented space starting at the last file; and small interstitial empty spaces are just wasted. Do any file-systems do this and if not is the reason simply storage economy ? regards Rohan McLeod