Configuring Primary and Secondary Swap

Increase primary swap.

If you are using logical volumes, you may want to first attempt to extend the disk space allocated for the primary swap logical volume using the lvextend command or SAM. However, you will only succeed if disk space (physical extents) contiguous with the existing swap space is still available, which is unlikely. You must reboot the system for the changes to take effect.

If contiguous disk space is not available, you will need to create a new contiguous logical volume for primary swap within the root volume group, the volume group that contains the root logical volume. You do not need to designate a specific disk. For example:

lvcreate -C y -L 48 -r n -n pswap /dev/vgroot

After creating a logical volume that will be used as primary swap, you will need to use lvlnboot(1M):

lvlnboot -s /dev/vgroot/pswap

Reduce primary swap.

If you are using logical volumes, you can do this by reducing the size or number of logical volumes used for primary swap. If you are not using logical volumes, you can discontinue the use of a disk section for primary swap. Reducing primary swap cannot be done dynamically; you must reboot the system for reduced primary device swap changes to take effect.