Linux 4.0 Has a File-System Corruption Problem, RAID Users Warned

Posted by timothy on Thursday May 21, 2015 @01:23AM from the don't-store-the-ark-there dept.

An anonymous reader writes: For the past few days kernel developers and Linux users have been investigating an EXT4 file-system corruption issue affecting the latest stable kernel series (Linux 4.0) and the current development code (Linux 4.1). It turns out that Linux users running the EXT4 file-system on a RAID0 configuration can easily destroy their file-system with this newest "stable" kernel. The cause and fix have materialized but it hasn't yet worked its way out into the mainline kernel, thus users should be warned before quickly upgrading to the new kernel on systems with EXT4 and RAID0.

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Warning: RAID 0 by Culture20 · 2015-05-21 01:37 · Score: 2, Interesting

RAID 0 is unstable to begin with. Medium case scenario here (for legitimate use) is some data gets corrupted on a compute node. Run the program on two nodes; if you get the same result on both, that result is probably fine. If you're running RAID0 on any filesystem that isn't temporary or at least easily replaceable, you're doing it wrong.