diff options
| author | dillon <dillon@FreeBSD.org> | 2002-12-15 19:17:57 +0000 |
|---|---|---|
| committer | dillon <dillon@FreeBSD.org> | 2002-12-15 19:17:57 +0000 |
| commit | b43fb3e9200092f2885e909dc7ee85cb0871cfef (patch) | |
| tree | fc6e3be9fa1b757f9ac0967a46494adcf0cc5682 /sbin/swapon/swapon.8 | |
| parent | 2925e70a14eb46bd10c8905fd619024bb19f7f9d (diff) | |
| download | FreeBSD-src-b43fb3e9200092f2885e909dc7ee85cb0871cfef.zip FreeBSD-src-b43fb3e9200092f2885e909dc7ee85cb0871cfef.tar.gz | |
This is David Schultz's swapoff code which I am finally able to commit.
This should be considered highly experimental for the moment.
Submitted by: David Schultz <dschultz@uclink.Berkeley.EDU>
MFC after: 3 weeks
Diffstat (limited to 'sbin/swapon/swapon.8')
| -rw-r--r-- | sbin/swapon/swapon.8 | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/sbin/swapon/swapon.8 b/sbin/swapon/swapon.8 index ce23b38..edda998 100644 --- a/sbin/swapon/swapon.8 +++ b/sbin/swapon/swapon.8 @@ -36,39 +36,46 @@ .Dt SWAPON 8 .Os .Sh NAME -.Nm swapon -.Nd "specify additional device for paging and swapping" +.Nm swapon , swapoff +.Nd "specify devices for paging and swapping" .Sh SYNOPSIS -.Nm +.Nm swap[on|off] .Fl a -.Nm +.Nm swap[on|off] .Ar special_file ... .Sh DESCRIPTION The -.Nm +.Nm swapon utility 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 +.Nm swapon 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 +The +.Nm swapoff +utility disables paging and swapping on a device. +Calls to +.Nm swapoff +succeed only if disabling the device would leave enough +remaining virtual memory to accomodate all running programs. +.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. +are added to or removed from the pool of available swap +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. +The second form is used to configure or disable individual devices. .Sh SEE ALSO .Xr swapon 2 , .Xr fstab 5 , @@ -85,12 +92,12 @@ memory disk devices .It Pa /etc/fstab ASCII file system 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 +.Nm swapon utility appeared in .Bx 4.0 . +The +.Nm swapoff +utility appeared in +.Fx 5.0 . |
