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

Btrfs In 2014: RAID5/RAID6, Data Deduplication

Linux Kernel

Published on 09 January 2014 07:17 AM EST
Written by Michael Larabel in Linux Kernel
7 Comments

Samsung's F2FS isn't the only Linux file-system receiving new features but the Btrfs developers are currently baking some new treats of their own.

Btrfs developers were asked about the state of RAID5/6 in Btrfs, since the work has largely been silent in 2013 since the initial support was added to the kernel as still an experimental option. Chris Mason, the lead Btrfs developer and now employed by Facebook, responded.

Chris Mason says that the main item missing from Btrfs' RAID5/6 handling is the logging of parity to ensure consistent parity in situations like power loss. Chris says he's back to working on this code and is making good progress. He's also planning to fix scrub support for RAID5/6 Btrfs support after completing the parity work.

On a related note is also the new Linux kernel RAID library with Btrfs support for offering up to six levels of parity in RAID configurations.

As another exciting forthcoming item for Btrfs is online data de-duplication support. Data deduplication allows for eliminating duplicate blocks of repeating data. There's been other file-systems to offer inline data deduplication like SDFS and LessFS. There's also UKSM data deduplication as out-of-tree support for the Linux kernel.

There's now a set of fourteen patches that are up to their 8th revision on the Btrfs mailing list for offering data dedup support at the Btrfs file-system level. Separately is also a btrfs-progs patch for implementing de-duplication controls from the Btrfs program in user-space.

Another recent Btrfs news item worth reiterating is that Btrfs-progs is going to be updated in tandem with the Linux kernel.

With many changes lately and more forthcoming to Btrfs, plus now having the backing of Facebook, will 2014 finally be the year of the Btrfs file-system on Linux? OpenSUSE is likely switching to Btrfs in their next release but we haven't yet seen any signalling of other tier-one distributions making the switch in the near-term.

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. AMD Launches New FX CPUs, Cuts Prices On Existing Processors
  2. Preview: AMD's FX-9590 Eight-Core At Up To 5.0GHz On Linux
  3. Intel Launches The Core i7 5960X, Mighty Powerful Haswell-E CPUs
  4. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
Latest Linux Articles
  1. Ondemand vs. Performance CPU Governing For AMD FX CPUs On Linux 3.17
  2. How Intel Graphics On Linux Compare To Open-Source AMD/NVIDIA Drivers
  3. The Fastest NVIDIA GPUs For Open-Source Nouveau With Steam Linux Gaming
  4. Testing For The Latest Linux Kernel Power Regression
Latest Linux News
  1. New Group Calls For Boycotting Systemd
  2. The Features To Find With The Imminent Release Of LLVM/Clang 3.5
  3. Borderlands 2 Is Coming To Linux
  4. The Witcher 2 Ups The Performance More & Works Around Catalyst Bug
  5. Running Gallium3D's LLVMpipe On The Eight-Core 5GHz CPU
  6. Trying Intel OpenCL On Linux For Video Encoding
  7. GSoC 2014 Yielded Some Improvements For Mesa/X.Org This Year
  8. webOS Lives On As LuneOS With New Release
  9. Marek Lands Radeon Gallium3D HyperZ Improvements
  10. Mozilla Firefox 32 Surfaces With HTML5, Developer Changes
Latest Forum Discussions
  1. Lennart Poettering Talks Up His New Linux Vision That Involves Btrfs
  2. nv and xorg.conf under Debian PPC
  3. AMD graphics doesn't work with AMD Catalyst drivers
  4. Best Radeon for a Power Mac G5?
  5. The dangers of Linux kernel development
  6. Updated and Optimized Ubuntu Free Graphics Drivers
  7. AMD Releases UVD Video Decode Support For R600 GPUs
  8. SSD seems slow