Please tell the major differences between the EXT2 and EXT3 file systems. Which one is more reliable and why?
Apart from the max file size improvements, performance improvements etc. the one big major difference is that ext3 is a journaled file system while ext2 is not.
RTFM. This is the first link that came in a google search.
http://www.maenad.net/geek/di8k-debian/node29.html
-- Sharninder