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Will Tux3 Soon Enter The Mainline Kernel?

Linux Kernel

Published on 23 February 2009 08:25 AM EST
Written by Michael Larabel in Linux Kernel
3 Comments

As of late, file-systems have been a popular topic among Linux developers and users. The EXT4 file-system was recently stabilized and it brings some modest performance improvements and is finding its way into modern distributions. While not yet stabilized, the Btrfs file-system was merged into the Linux 2.6.29 kernel and is poised as the Linux competitor to Sun's famed ZFS file-system. There is also open-source work underway in supporting Microsoft's exFAT file-system on Linux. On top of all of that, there is also the Tux3 file-system.

The Tux3 file-system was last talked about here in late November when they were moving from their FUSE module to doing a kernel port of this file-system that succeeds the never-released Tux2. Now, however, the Tux3 file-system is making it a bit further. Last week the Tux3 developers were successful in using Tux3 as the root file-system. Their initial benchmarks are also fairly promising and according to Daniel Phillips the file-system has been "exceptionally stable" for him.

Yesterday there was a talk at the Southern California Linux Expo by Daniel Phillips on Tux3. Daniel had talked about the design of Tux3, its different models and processes, and how it compares to different Linux file-systems as well as to other operating systems like HAMMER on BSD or ZFS on OpenSolaris. Tux3 has a user-space utility for reading/writing and creating Tux3 file-systems as well as a Tux3 FUSE-based file-system, a Tux3 virtualized kernel file-system, and lastly there is now a Tux3 kernel file-system for running on real hardware.

In some of the performance numbers shared by Daniel, the Tux3 file-system is slightly faster than EXT3 at copying the root file-system to a new partition. The next steps for the Tux3 file-system include working on atomic commit, beginning the review cycle, developing an allocation policy, working on versioning, directory index support, extent allocation, and replication support. The slides from the Tux3 SCALE talk can be found on the Linux kernel mailing list.

The Tux3 project has been making great progress and following its review period, soon perhaps we will see it enter the mainline kernel (of course, as an experimental option). Kernel patches for the Tux3 file-system are supposed to be in a Git tree within the next few days.

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 .
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