pub fn partition_states<I>(nodes: I) -> Vec<PartitionState>Expand description
Group the given running nodes by partition, measuring each node’s data-directory size and each partition’s free space.
nodes should be the set of currently-running nodes as (id, data_dir) pairs; evicted or
stopped nodes are irrelevant to a reclaim decision and should be filtered out by the caller.
Partitions whose free space cannot be read are skipped.