Usage Notes

The following fields must be set within this structure:
- The PCTL_BL_ACTION flag must be set.
- Modify VMAX by setting the PCTL_BL_VMAX flag and specifying the new VMAX value in the field PCTL_BL_VMAX_VAL.
- Modify FMIN by setting the PCTL_BL_FMIN flag and specifying the new FMIN value in the field PCTL_BL_FMIN_VAL.
The caller must be a superuser.
A request to modify both VMAX and FMIN can be made in one call.
The VMAX and FMIN values are in megabytes (MB).
This command is equivalent to the confighfs shell commands. The following confighfs command sets virtual storage maximum (VMAX) to n, where n is in MB.:
```
   confighfs -v n
```
The following confighfs command sets virtual storage minimum (FMIN) to n, where n is in MB.
```
   confighfs -f n          
```