$drivedesc_base{$key} = $d;
};
# throughput: (leaky bucket)
-$add_throttle_desc->('bps', 'integer', 'r/w speed', 'bps per second', 'bytes');
-$add_throttle_desc->('bps_rd', 'integer', 'read speed', 'bps per second', 'bytes');
-$add_throttle_desc->('bps_wr', 'integer', 'write speed', 'bps per second', 'bytes');
-$add_throttle_desc->('mbps', 'number', 'r/w speed', 'mbps per second', 'megabytes');
-$add_throttle_desc->('mbps_rd', 'number', 'read speed', 'mbps per second', 'megabytes');
-$add_throttle_desc->('mbps_wr', 'number', 'write speed', 'mbps per second', 'megabytes');
-$add_throttle_desc->('iops', 'integer', 'r/w I/O', 'iops per second', 'operations');
-$add_throttle_desc->('iops_rd', 'integer', 'read I/O', 'iops per second', 'operations');
-$add_throttle_desc->('iops_wr', 'integer', 'write I/O', 'iops per second', 'operations');
+$add_throttle_desc->('bps', 'integer', 'r/w speed', 'bps', 'bytes per second');
+$add_throttle_desc->('bps_rd', 'integer', 'read speed', 'bps', 'bytes per second');
+$add_throttle_desc->('bps_wr', 'integer', 'write speed', 'bps', 'bytes per second');
+$add_throttle_desc->('mbps', 'number', 'r/w speed', 'mbps', 'megabytes per second');
+$add_throttle_desc->('mbps_rd', 'number', 'read speed', 'mbps', 'megabytes per second');
+$add_throttle_desc->('mbps_wr', 'number', 'write speed', 'mbps', 'megabytes per second');
+$add_throttle_desc->('iops', 'integer', 'r/w I/O', 'iops', 'operations per second');
+$add_throttle_desc->('iops_rd', 'integer', 'read I/O', 'iops', 'operations per second');
+$add_throttle_desc->('iops_wr', 'integer', 'write I/O', 'iops', 'operations per second');
# pools: (pool of IO before throttling starts taking effect)
-$add_throttle_desc->('mbps_max', 'number', 'unthrottled r/w pool', 'mbps per second', 'megabytes');
-$add_throttle_desc->('mbps_rd_max', 'number', 'unthrottled read pool', 'mbps per second', 'megabytes');
-$add_throttle_desc->('mbps_wr_max', 'number', 'unthrottled write pool', 'mbps per second', 'megabytes');
-$add_throttle_desc->('iops_max', 'integer', 'unthrottled r/w I/O pool', 'iops per second', 'operations');
-$add_throttle_desc->('iops_rd_max', 'integer', 'unthrottled read I/O pool', 'iops per second', 'operations');
-$add_throttle_desc->('iops_wr_max', 'integer', 'unthrottled write I/O pool', 'iops per second', 'operations');
+$add_throttle_desc->('mbps_max', 'number', 'unthrottled r/w pool', 'mbps', 'megabytes per second');
+$add_throttle_desc->('mbps_rd_max', 'number', 'unthrottled read pool', 'mbps', 'megabytes per second');
+$add_throttle_desc->('mbps_wr_max', 'number', 'unthrottled write pool', 'mbps', 'megabytes per second');
+$add_throttle_desc->('iops_max', 'integer', 'unthrottled r/w I/O pool', 'iops', 'operations per second');
+$add_throttle_desc->('iops_rd_max', 'integer', 'unthrottled read I/O pool', 'iops', 'operations per second');
+$add_throttle_desc->('iops_wr_max', 'integer', 'unthrottled write I/O pool', 'iops', 'operations per second');
# burst lengths
$add_throttle_desc->('bps_max_length', 'integer', 'length of I/O bursts', 'seconds', 'seconds', 1);