Added
- Block IO and NVMe drive health on macOS.
blockio_requestspublishes
blockio_operationsandblockio_bytesfrom the storage drivers' IOKit
statistics, plus the macOS-onlyblockio_retries,blockio_service_time
andblockio_driver_errors.drivehealthpublishesdrive_temperature,
the warning and critical temperature-time counters and the thermal-throttle
counters from each NVMe drive's SMART log. Neither needs root.