Linux 5.14 To Support F2FS Read-Only Feature

Written by Michael Larabel in Linux Storage on 25 May 2021 at 09:22 AM EDT. Add A Comment
With the Linux 5.14 cycle this summer the Flash-Friendly File-System (F2FS) should land its new "RO" feature read-only mode.

Queued up yesterday into the F2FS "dev" code for its kernel driver is the RO feature when marked in a file-system's superblock then allows bypassing the provisioning/reserve spaces and segment summary area (SSA).

Similarly, yesterday was a merge for the RO feature to the f2fs-tools user-space component for this file-system. "This patch adds a readonly feature on small partitions by eliminating on-disk layout for data writes such as provisioning/reserved space and SSA. This requires f2fs updates to understand RO feature in superblock."

The feature can be enabled with the "ro" option when running on a supported kernel (5.14+).
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