Enable legal hold (WORM) object locking on MinIO objects with mc legalhold set
domain: min.io · 5 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Legal hold requires the bucket to have object locking enabled - create with mc mb --with-lock, or enable on existing buckets via mc retention set --default (supported from the 2025-05-20 release onward).
Enable legal hold on a single object: mc legalhold set ALIAS/BUCKET/objects.txt
Enable on all existing objects under a bucket/prefix: mc legalhold set --recursive ALIAS/BUCKET
Target a specific version (versioning required): mc legalhold set --version-id <vid> ALIAS/BUCKET/obj ; or all versions with --versions ; or a point-in-time set with --rewind "<ISO8601>".
Verify: mc legalhold info ALIAS/BUCKET/obj
Known gotchas
Legal hold is INDEFINITE and enforces full immutability; only principals with s3:PutObjectLegalHold can set or lift it - a held object cannot be deleted or overwritten until the hold is cleared.
Legal hold combines with GOVERNANCE/COMPLIANCE retention: an object under both stays WORM until the hold is lifted AND the rule expires.
--recursive, --versions, --version-id, --rewind are mutually exclusive in combinations (--version-id cannot pair with --recursive/--versions/--rewind).
Docs moved to https://docs.min.io/aistor/reference/cli/ (mc legalhold set)
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