Btrfs RAID 5/6 Support Is "Mostly OK" With Linux 4.12
Written by Michael Larabel in Linux Storage on 8 July 2017 at 09:32 AM EDT. 61 Comments
LINUX STORAGE --
I previously reported on Btrfs RAID 5/6 fixes for Linux 4.12 to work on fixing some potentially bad Btrfs RAID 5/6 problems. These changes for Linux 4.12 were enough to elevate the rating of this functionality.

The Btrfs status page now reports scrub + RAID 5/6 support as "mostly OK" rather than as "unstable" for previous kernels up through Linux 4.12. The scrub and auto-repair fixes put the Btrfs RAID 5/6 state in better standing, but is still not being declared stable. The Btrfs RAID 5/6 write hole still exists and the parity is currently not being check-summed.

Details via this Wiki page.

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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 10,000 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 or contacted via MichaelLarabel.com.

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