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Chris LuandGitHub
152f1a2096
Statistics aggregates the volume layouts of a collection, but EC volumes are tracked outside collectionMap, so they were reported as nothing. A mount over a cluster whose volumes have mostly been encoded showed a df used size of a few GiB against terabytes of EC data. Walk the data nodes and add the EC volumes of the requested collection. Every shard copy counts, parity included, the way a regular volume's used size counts every replica, so used size stays the space the cluster actually occupies. File count comes from the volume-wide .ecx and .ecj counts, taking the largest a holder reports rather than summing them: both files travel with the shards on a move, so several nodes can report the same tombstones.