Miguel Medalha wrote: > I am about to install a new server running CentOS 5.4. The server will > contain pretty critical data that we can't afford to corrupt. > Just for the record, Theodore Ts'o marked ext4 as stable and ready for general usage more than one year ago [1]. On 25 December 2008 kernel 2.6.28 was released with ext4 considered ready for production. So, ext4 is not _that_ new anymore. One year latter that Fedora 12 and Ubuntu 9.10 began using ext4 as default. I believe for 5.5 or even on 5.6, ext4 will not be a tech preview anymore. Considering that RH has extended the support so much, and how ext3 is so limited with the current and future disk's capacities (fsck on a 1TB volume is not funny). The current ext4 module is close to the one on 2.6.29 plus lots of fixes [2] [1] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=03010a3350301baac2154fa66de925ae2981b7e3 [2] rpm -q --changelog kernel|grep ext4