The combination of RAID0 redundancy, an ext4 filesystem, a Linux 4.x kernel, and either Debian Linux or Arch Linux has been associated with data corruption.
El Reg reports EXT4 filesystem can EAT ALL YOUR DATA
Fixes are available, one explained by Lukas Czerner on the Linux Kernel Mailing List. That post suggests the bug is long-standing, possibly as far back as the 3.12-stable kernel. Others suggest the bug has only manifested in Linux 4.x.
[...] This patch for version 4.x and the patched Linux kernel 3.12.43 LTS both seem like sensible code to contemplate.
(Score: 2) by gnuman on Thursday May 28 2015, @06:26AM
I've always loved ext4. ... Then again, I'm not into RAID etc.
These are independent concepts and have little to do with each other. RAID is block level. ext is file system.