You can quiesce (temporarily stop) a reallocation scan that is in progress and restart it later. For example, if you want to back up a LUN or an aggregate but a scan is already in progress, you can quiesce the scan.
When you restart a file, LUN, or volume reallocation scan, the scan restarts from the beginning of the reallocation process. An aggregate reallocation scan restarts from where it stopped.
pathname is the path to the LUN, file, or volume, and aggr_name is the name of the aggregate for which you want to quiesce the reallocation scan.