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GRUB Bootloader Now Supports Reading Disks With Btrfs RAID 5/6

Written by Michael Larabel in GNU on 31 October 2018 at 03:08 PM EDT. 10 Comments

As the first commits to upstream GRUB in one month, this GNU boot-loader now supports reading Btrfs file-systems in RAID5 or RAID6 modes.

Two years ago the Btrfs RAID 5/6 code was found to be very unsafe but over the course of many kernel cycles there have been numerous fixes to the Btrfs file-system's native RAID 5/6 code. If you are on a recent kernel (say Linux 4.16+ appears to be in good shape), the Btrfs RAID code for these levels should be in good shape.

Further making Btrfs RAID 5/6 viable is that the GRUB boot-loader now supports them. In addition, there is support for recovering Btrfs RAID 5/6 too for faulty disks.

This support was merged today over the span of a number of commits.

10 Comments

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About The Author

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.