Linux 5.9 To Support DM-CRYPT On Zoned Block Devices
Written by Michael Larabel in Linux Storage on 21 July 2020 at 12:00 AM EDT. 1 Comment
LINUX STORAGE --
Along with Linux 5.9 set to add NVMe ZNS support for the spec surrounding placement of data within zones, more broadly this next kernel is positioned to bring dm-crypt support for zoned block devices.

For zoned block devices / zoned storage where the address space is partitioned into zones for having more control over data placement, reducing latency, and other reasons with the standards from the likes of ZBC, ZAC, and now NVMe ZNS, the dm-crypt component is having to adapt. The Linux Device Manager's dm-crypt allows for transparent disk encryption and does so quite well, but until now hasn't properly supported zoned block devices.

Thankfully from Western Digital is now support that was queued on Monday for dm-crypt zoned block device support. This code is now within the Linux Device Mapper Git branch of material slated for Linux 5.9 which will see its merge window open in August and should release as stable in October.
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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 or contacted via MichaelLarabel.com.

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