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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 4.10                     June 5, 1993                     FreeBSD 4.10

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

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