Inspect a MinIO object's erasure-code shard/part dispersion across drives (mc admin object info)
domain: min.io · 2 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Run: mc admin object info ALIAS/BUCKET/object.txt
The output summarizes the object and each of its parts (shards/parts on disk), listing part number, pool, node, erasure set, drive, filename, and size.
Known gotchas
MinIO groups drives into erasure sets (default 2-16 drives); each object is written across one erasure set using Reed-Solomon erasure coding (N = K data + M parity).
You can typically lose up to half the drives in an erasure set and still reconstruct the object; read operations require at least K healthy shards (read quorum).
Requires a multi-drive erasure-coded deployment; a single-drive setup has no parity shards to inspect.
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