some filesystems like btrfs and lustre are marked as fault tolerant file systems in : wiki:http://en.wikipedia.org/wiki/List_of_file_systems
what's meaning of fault tolerant file system at all? does it offer some thing more than journaling?
if you enable block journaling in ext3 you can call it fault tolerant or these file systems offer some thing more? my field of interest is to know what these file systems offer about power failure problems?