I would like to start using a 64-bit kernel to support much more RAM for some of our largest clients. The question had come up about the ext3 file system we currently use. Is there any difference in the way ext3 functions under a 64-bit OS? What I am looking to do is reformat a root partition (sda1) and reinstall fresh 64-bit OS onto it, while keeping data in another partition (sda4) intact. When we changed over from a 2.4 kernel to a 2.6, I couldn't do this, had to reformat everything then restore data from a backup due to changes in ext3. Anyone have the quick answer on this one? I have done some digging but came up empty so I turn to the kerneltrap as you guys always help me out.
The new OS is planned to be CentOS 5.1 with the 2.6.18-53.el5 kernel.
Thanks