date: 2020-10-20T09:26:21+08:00 # 创建日期 author: "Rustle Karl" # 作者
title: "swapon 挂载 swap 分区" # 文章标题
url: "posts/linux/tools/standard/swapon" # 设置网页永久链接 tags: [ "linux", "cmd" ] # 标签 series: [ "Linux 学习笔记" ] # 系列 categories: [ "学习笔记" ] # 分类
weight: 20 # 排序优先级 chapter: false # 设置为章节
挂载 swap 分区
swapon [options] [<spec>]| 参数 | 作用 |
|---|---|
| -a, --all | enable all swaps from /etc/fstab |
| -d, --discard | discard freed pages before they are reused |
| -e, --ifexists | silently skip devices that do not exist |
| -f, --fixpgsz | reinitialize the swap space if necessary |
-p, --priority <prio> |
specify the priority of the swap device |
| -s, --summary | display summary about used swap devices |
--show[ = <columns>] display summary in definable table |
|
| --noheadings | don't print headings, use with --show |
| --raw | use the raw output format, use with --show |
| --bytes | display swap size in bytes in --show output |
| -v, --verbose | verbose mode |
| -h, --help | display this help and exit |
| -V, --version | output version information and exit |
| 参数 | 作用 |
|---|---|
-L <label> |
synonym for LABEL = <label> |
-U <uuid> |
synonym for UUID = <uuid> |
LABEL = <label> |
specifies device by swap area label |
UUID = <uuid> |
specifies device by swap area UUID |
PARTLABEL = <label> |
specifies device by partition label |
PARTUUID = <uuid> |
specifies device by partition UUID |
<device> |
name of device to be used |
<file> |
name of file to be used |
| 参数 | 作用 |
|---|---|
| NAME | device file or partition path |
| TYPE | type of the device |
| SIZE | size of the swap area |
| USED | bytes in use |
| PRIO | swap priority |
free -h total used free shared buffers cached
Mem: 1.9G 1.1G 833M 9.6M 1.7M 304M
-/+ buffers/cache: 848M 1.1G
Swap: 2.0G 0B 2.0G
```bash
swapon /dev/sdb2
free -h total used free shared buffers cached
Mem: 1.9G 1.1G 824M 9.6M 1.7M 304M
-/+ buffers/cache: 857M 1.1G
Swap: 7.0G 0B 7.0G
swapoff -avi /etc/fstab
# 注释掉 swap 挂载命令