A shared on-disk metadata library used by device-mapper targets such as dm-thin (thin provisioning) and dm-cache to track block mappings, reference counts, and B-tree structures across reboots. It is infrastructure code, not a driver for any piece of hardware.
This is not actually a driver directory; it is the persistent metadata support library that underpins device-mapper features like thin provisioning and caching. It belongs to the storage stack's infrastructure and is not a candidate for the hardware-driver removal discussion.
repository signals
23files
9,102source lines
37commits, 5y
+1,795 / −601lines added / removed, 5y
13authors, 5y
monthly commits · 2021-04-21 → 2026-04-21 · 37 total · active in 16/61 months
sources
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codex reasoning notes (technical)
Not a driver directory: contains device-mapper persistent metadata support code used by md/dm targets, not kernel-bound hardware driver code.