There Is Finally A User-Space Utility To Make EROFS Linux File-Systems
Written by Michael Larabel in Linux Storage on 19 November 2018 at 02:52 AM EST. 8 Comments
LINUX STORAGE --
Back when Huawei introduced the EROFS Linux file-system earlier this year, there wasn't any open-source user-space utility for actually making EROFS file-systems. Even when EROFS was merged into the mainline tree, the user-space utility was still non-existent but now that issue has been rectified.

EROFS is the "Extendable Read-Only File-System" that Huawei is developing for possible use on future mobile (Android) devices. EROFS is designed to perform better than other read-only file-systems while supporting better compression capabilities and other features. The user-space "mkfs" code was previously held up apparently in the company's open-source processing.

EROFS was merged to Linux 4.19 staging and saw a few updates in the current Linux 4.20 cycle. The file-system is still being treated as "staging" as the on-disk format isn't necessarily finalized.

At the end of the week, EROFS developers published a new erofs-utils Git tree. This erofs-utils contains the initial erofs-mkfs component for making an EROFS file-system and basic features so far like compression support.

We'll see where the read-only EROFS file-system moves in 2019.
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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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