swapon \- specify additional device for paging and swapping
is used to specify additional devices on which paging and swapping
The system begins by swapping and paging on only a single device
so that only one disk is required at bootstrap time.
normally occur in the system multi-user initialization file
making all swap devices available, so that the paging and swapping
activity is interleaved across several devices.
argument is given, causing all devices marked as ``sw''
The second form gives individual block devices as given
in the system swap configuration table. The call makes only this space
available to the system for swap allocation.
/dev/[ru][pk]?b normal paging devices
There is no way to stop paging and swapping on a device.
It is therefore not possible to make use of devices which may be
dismounted during system operation.