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SWAPON(8)		FreeBSD	System Manager's Manual		     SWAPON(8)

NAME
     swapon -- specify additional device for paging and	swapping

SYNOPSIS
     swapon -a
     swapon special_file ...

DESCRIPTION
     Swapon is used to specify additional devices on which paging and swapping
     are to take place.	 The system begins by swapping and paging on only a
     single device so that only	one disk is required at	bootstrap time.	 Calls
     to	swapon normally	occur in the system multi-user initialization file
     /etc/rc making all	swap devices available,	so that	the paging and swap-
     ping activity is interleaved across several devices.

     Normally, the first form is used:

     -a	     All devices marked	as ``sw'' swap devices in /etc/fstab are made
	     available unless their ``noauto'' option is also set.

     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.

SEE ALSO
     swapon(2),	fstab(5), init(8), pstat(8), rc(8), vnconfig(8)

FILES
     /dev/{ad,da}?s?b  standard	paging devices
     /dev/vn0b	       vnode disk paging device
     /etc/fstab	       ASCII filesystem	description table
     /etc/vntab	       ASCII vnode file	table

BUGS
     There is no way to	stop paging and	swapping on a device.  It is therefore
     not possible to dismount swap devices which are mounted during system
     operation.

HISTORY
     The swapon	command	appeared in 4.0BSD.

FreeBSD	9.2			 June 5, 1993			   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | FILES | BUGS | HISTORY

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