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Linux MD RAID Gets Some Improvements For 4.9 Kernel

Written by Michael Larabel in Linux Storage on 8 October 2016 at 08:26 AM EDT. 3 Comments

The MD subsystem updates were sent out earlier this week for the Linux 4.9 kernel merge window with a few improvements/features to note.

The MD RAID code for the Linux 4.9 kernel has some optimized functions making use of AVX512 extensions for RAID6 gen/recovery, the non-rotational bit is set when creating a RAID array with all SSDs, and setting the correct max_hw_sectors for RAID 5/6 modes should marginally improve the performance.

The MD code for Linux 4.9 also fixes a potential deadlock, a couple md-cluster bugs, and some other minor fixes.

More details on the MD updates for Linux 4.9 via this pull request.

3 Comments

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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 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.