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Recently when benchmarking the Btrfs and EXT4 file-systems we were left surprised that the performance of the next-generation Btrfs file-system had regressed against EXT4 to the point where the evolutionary file-system is measurably faster in a greater number of disk benchmarks.
This guide shows how to work with the btrfs file system on Linux. It covers creating and mounting btrfs file systems, resizing btrfs file systems online, adding and removing devices, changing RAID levels, creating subvolumes and snapshots, using compression and other things.
One of the benefits of Btrfs besides offering competitive performance against other Linux file-systems and SSD optimizations is its support for sub-volumes and writable snapshots. While Btrfs is still in development and is not yet used as a default file-system by any Linux distribution, Red Hat has been introducing support for system rollbacks into Fedora.
This morning we published benchmarks of ZFS, EXT4, and Btrfs when running these three popular file-systems off a high-performance OCZ Vertex 2 solid-state drive. To a fair amount of surprise, the EXT4 file-system ended up beating out Btrfs on the SSD in a number of tests.
ext3 and ext4 file systems can be converted to btrfs. For non-root file systems, this can be done online (i.e., without reboot), while for root file systems we need to boot into some kind of rescue system or Live CD. This guide explains how to convert an ext3 or ext4 root file system into btrfs on Ubuntu 12.10 and how to roll back to ext3/ext4 again if desired.
The default journaling file system on non-boot partitions on Ubuntu 11.04 is ext4. Other journaling file systems supported are ext3, xfs, jfs, reiserfs, and btrfs. The journaling file system of interest in this article is btrfs, the B-Tree File System. Btrfs is an ongoing attempt to create a ZFS-like file system for Linux.
Ubuntu 10.10 beta is the latest Linux distribution release to have support for the btrfs file system. Btrfs (B-tree File System) is a copy-on-write file system for Linux. It changes how we manage disks on Linux.
This tutorial presents a step by step guide on how to install Ubuntu 10.10 beta on a btrfs file system.