1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

The EXT4 Corruption Bug Is Fixed

Linux Kernel

Published on 31 October 2012 12:40 PM EDT
Written by Michael Larabel in Linux Kernel
8 Comments

Last week it was discovered an EXT4 file-system corruption bug hit the stable Linux kernel. The true cause of this EXT4 bug has now been uncovered and patched within the mainline Linux kernel.

The EXT4 corruption issue was fixed with this commit and Ted Ts'o describes it as:
This fixes the root cause of the ext4 data corruption bug which raised a ruckus on LWN, Phoronix, and Slashdot.

This bug only showed up when non-standard mount options (journal_async_commit and/or journal_checksum) were enabled, and when the file system was not cleanly unmounted, but the root cause was the inode bitmap modifications was not being properly journaled.

This could potentially lead to minor file system corruptions (pass 5 complaints with the inode allocation bitmap) after an unclean shutdown under the wrong/unlucky workloads, but it turned into major failure if the journal_checksum and/or jouaral_async_commit was enabled.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. Scythe Mugen MAX
  2. Intel Core i7 5960X Haswell-E On Linux
  3. Intel 80GB 530 Series M.2 SSD On Linux
  4. With A New Motherboard, The Core i7 5960X Haswell-E Lights Up
Latest Linux Articles
  1. RadeonSI Gallium3D vs. Catalyst At 4K UHD On Linux
  2. MSAA RadeonSI Gallium3D Performance Preview
  3. Intel Core i7 5960X CPU Core Scaling Under Linux
  4. AMD RadeonSI Gallium3D Performance For 4K Linux Gaming
Latest Linux News
  1. Digia Qt Spinoff Is Called "The Qt Company"
  2. GNOME 3.14 Makes More Progress In Running Natively On Wayland
  3. Minix 3.3 Released With Cortex-A8 ARM Support, NetBSD Userland Compatibility
  4. More Intel DRM Changes Queued For Linux 3.18, Including Old i830M Fixes
  5. New Code Starts Lining Up For X.Org Server 1.17
  6. Rust Developers Planning For The Rust 1.0 Language
  7. RPM 4.12 Brings New Switches, New Rpm2Archive Utility
  8. Nouveau For Linux 3.18 Gains DP Audio, More Re-Clocking
  9. SUSE Gets Bought Out Again
  10. Enlightenment E19 Officially Released With Its Own Wayland Compositor
Latest Forum Discussions
  1. support for first generation UVD blocks (RV6xx, RS780, RS880 and RV790)
  2. Nvidia joins the ranks of Apple and Microsoft
  3. Updated and Optimized Ubuntu Free Graphics Drivers
  4. New Group Calls For Boycotting Systemd
  5. Hd 6850
  6. nv and xorg.conf under Debian PPC
  7. X.Org Is Looking For Some Female Help
  8. FSF Issues Their Rebuttal To Apple's New iPhone, Watch & Apple Pay