Ublk Enables User-Space Virtual Block Devices
Ublk, a user-space framework introduced in Linux v6.0 and maintained by Ming Lei, enables creation of virtual block devices using io_uring and is marked experimental as of Jan 13, 2026. The framework exposes servers as /dev/ublkbN and /dev/ublkcN, letting user-space daemons handle I/O with language freedom, isolation, and independent release schedules. By batching requests via io_uring, ublk amortizes context-switch costs, improving high-throughput I/O performance.
Scoring Rationale
Practical user-space block-device capability drives the score; limited cross-domain relevance beyond Linux storage reduces broader impact.
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Sources
- Read OriginalCreating virtual block devices with ublkjpospisil.com
