hard links to directories

Posted Oct 21, 2007 17:52 UTC (Sun) by rbfair (guest, #48582)
In reply to: hard links to directories by Duncan
Parent article: The many faces of fsck

Apparently Apple has implemented directory hard links in their hfs+ 
filesystem, and it is the underpinning for the new 'Time Machine' backup 
in Mac OS-X leopard, where each incremental backup of an unchanged subtree 
is a single directory hard link. Seems like a very reasonable usage - though
Time Machine presumably will not work on NAS boxes lacking directory
hard link support (like Linux file systems.)

[Ref:
http://www.appleinsider.com/articles/07/10/12/road_to_mac...