swapoff命令

swapoff命令用于关闭系统交换区(swap area)。

swapoff实际上为swapon的符号连接，可用来关闭系统的交换区。

语法

swapoff [设备]

参数：

实例

显示分区信息:

# sfdisk -l //显示分区信息

Disk /dev/sda: 1305 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

  Device Boot Start   End  #cyls  #blocks  Id System
/dev/sda1  *   0+   12   13-  104391  83 Linux
/dev/sda2     13  1304  1292  10377990  8e Linux LVM
/dev/sda3     0    -    0     0  0 Empty
/dev/sda4     0    -    0     0  0 Empty

Disk /dev/sdb: 652 cylinders, 255 heads, 63 sectors/track

sfdisk: ERROR: sector 0 does not have an msdos signature
/dev/sdb: unrecognized partition
No partitions found

关闭交换分区。

# swapoff /dev/sda2 // 关闭交换分区