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Chris Lu
19dc085e33
StatFs on a mount reported cluster-wide total capacity but used size from a single volume layout keyed by collection, replication, ttl, and disk type. A mount without -collection therefore showed only the default collection's usage, hiding data in named collections, and even a collection-scoped mount missed volumes with a different replication, ttl, or disk type. Aggregate used size and file count across all layouts of the requested collection, and across every collection when the collection is empty, matching how Topology.Lookup treats an empty collection. Looking up stats no longer creates a phantom collection as a side effect.