lvectl is the primary tool for LVE management. lvectl is part of lve-utils package.
This program sets or gets the io scheduling class and priority for a program. If no arguments are given, ionice will query the current io scheduling class and priority for that process.
Renice alters the scheduling priority of one or more running processes. The following who parameters are interpreted as process ID's, process group ID's, or usernames. Renice 'ing a process group causes all processes in the process group to have their scheduling priority altered. Renice 'ing a user causes all processes owned by the user to have their scheduling priority altered. By default, the processes to be affected are specified by their process ids.