data-scrubbing · shipping · also Disk scrubbing, Storage scrubbing

Data scrubbing

Data scrubbing is proactive verification of stored data to discover errors before ordinary access requires the affected content.

Specify the verification layer and repair behavior: media verification, parity checks and filesystem checksum scans are not equivalent.

Relations

related

latent-sector-error, staggered-scrubbing, raid-5

Limitations

• Detection alone does not supply a valid replacement copy; repair depends on available redundancy. [1]
• Linux MD check is not guaranteed to be read-only for every RAID level. [2]

Citations

1. OpenZFS master documentation: zpool-scrub(8), description and operation boundaries (retrieved 11 October 2026). (accessed 2026-10-11)
2. Linux kernel documentation: RAID arrays, sync_action and mismatch_cnt (retrieved 11 October 2026). (accessed 2026-10-11)
3. Hesela: Scrubbing, detection time and repair boundaries (accessed 2026-10-11)

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