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Btrfs In Linux 3.10 Gets Skinny Extents, Quota Rebuilds

Linux Kernel

Published on 09 May 2013 05:04 PM EDT
Written by Michael Larabel in Linux Kernel
22 Comments

The Btrfs file-system pull request by Chris Mason has been submitted for inclusion into the Linux 3.10 kernel.

The two main features introduced to the Btrfs file-system in Linux 3.10 is skinny extends and support for rebuilding of quota indexes.

Skinny extens is a new feature that's disabled by default but can be easily enabled via btrfstune -x. This new extent allocation tree format is able to make the allocation tree smaller by about 30%.

The quota index rebuilding is used if the quota indexes of the Btrfs file-system become out-of-sync or if the user decides to enable quotas on an existing file-system.

Aside from these two new Btrfs features, the other changes for this experimental next-generation Linux file-system for the Linux 3.10 kernel are mostly bug-fixes. The pull request in full can be found on the kernel mailing list.

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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