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UBIFS Supports OverlayFS In Linux 4.9, Readying UBI For MLC Support

Written by Michael Larabel in Linux Storage on 13 October 2016 at 07:13 AM EDT. 2 Comments

The UBI/UBIFS pull request for the Linux 4.9 kernel for those interested in the Unsorted Block Image tech on Linux.

First up, for those running UBIFS on raw flash memory, there is now OverlayFS support. OverlayFS, as a reminder, provides a union mount for other file-systems. O_TMPFILE, RENAME_WHITEOUT/EXCHANGE are now supported by UBIFS for handling OverlayFS.

The UBI code in Linux 4.9 also has went through some code refactoring in prepping for MLC NAND support. For background information on MLC NAND support for UBI/UBIFS, see this mailing list thread for some of the earlier discussion.

More details on the UBI/UBIFS changes for Linux 4.9 via this pull request.

2 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.