mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
96 lines
3.3 KiB
Groff
96 lines
3.3 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)swapon.8 8.1 (Berkeley) 6/5/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd June 5, 1993
|
|
.Dt SWAPON 8
|
|
.Os BSD 4
|
|
.Sh NAME
|
|
.Nm swapon
|
|
.Nd "specify additional device for paging and swapping"
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Fl a
|
|
.Nm
|
|
.Ar special_file ...
|
|
.Sh DESCRIPTION
|
|
.Nm 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
|
|
.Nm
|
|
normally occur in the system multi-user initialization file
|
|
.Pa /etc/rc
|
|
making all swap devices available, so that the paging and swapping
|
|
activity is interleaved across several devices.
|
|
.Pp
|
|
Normally, the first form is used:
|
|
.Bl -tag -width indent
|
|
.It Fl a
|
|
All devices marked as ``sw''
|
|
swap devices in
|
|
.Pa /etc/fstab
|
|
are made available unless their ``noauto'' option is also set.
|
|
.El
|
|
.Pp
|
|
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.
|
|
.Sh SEE ALSO
|
|
.Xr swapon 2 ,
|
|
.Xr fstab 5 ,
|
|
.Xr init 8 ,
|
|
.Xr mdconfig 8 ,
|
|
.Xr pstat 8 ,
|
|
.Xr rc 8
|
|
.Sh FILES
|
|
.Bl -tag -width "/dev/{ad,da}?s?b" -compact
|
|
.It Pa /dev/{ad,da}?s?b
|
|
standard paging devices
|
|
.It Pa /dev/md?
|
|
memory disk devices
|
|
.It Pa /etc/fstab
|
|
ASCII filesystem description table
|
|
.El
|
|
.Sh 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.
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.Bx 4.0 .
|