Disk-chunk metrics

The onperf utility can display metrics for a specific disk chunk.

The disk-chunk metrics take the path name of a chunk as the metric scope.
Metric Name Description
Disk Operations Total number of I/O operations to or from the indicated chunk
Disk Reads Total number of reads from the chunk
Disk Writes Total number of writes to the chunk
Free Space (MB) The amount of free space available in megabytes