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6 regions of a DM device. If no regions are defined no statistics are
10 Each user-defined region specifies a starting sector, length and step.
14 The I/O statistics counters for each step-sized area of a region are
26 Each region has a corresponding unique identifier, which we call a
44 Create a new region and return the region_id.
50 a range of <length> 512-byte sectors
71 milliseconds. Precise timestamps are a little bit slower
81 report four numbers a:b:c:d. a is the number of requests
95 be a number, otherwise it would be interpreted as the number of
133 Print counters for each step-sized area of a region.
146 Output format for each step-sized area of a region: