usable space

{"type": "server", "timestamp": "2022-10-18T12:26:03,427Z", "level": "INFO", "component": "o.e.e.NodeEnvironment", "cluster.name": "elasticsearch", "node.name": "elasticsearch-master-0", "message": "using [1] data paths, mounts [[ /usr/share/elasticsearch/data (/dev/sdb)]], net usable_space [19.4gb], net total_space [58.7gb], types [ext4]" }

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