LVM 修改 Swap 空间 流程
- 应该查看下/etc/fstab对应挂载,如果是以UUID方式挂载的,应修改为文件或者设备才可以.否责重启后报错
- swap 空间 对应 /dev/vg/lv_swap
关闭swap挂载
swapoff -a #取消所有的挂载
缩小lv_swap
lvreduce -L -xxx /dev/vg/lv_swap
格式化lv_swap
mkswap /dev/vg/lv_swap
挂载lv_swap
swapon /dev/vg/lv_swap
swap相关命令
[root@54 ~]# swapoff --help
Usage:
swapoff -a [-v] disable all swaps
swapoff [-v] <special> disable given swap
swapoff -h display help
swapoff -V display version
The <special> parameter:
{-L label | LABEL=label} LABEL of device to be used
{-U uuid | UUID=uuid} UUID of device to be used
<device> name of device to be used
<file> name of file to be used
[root@54 ~]# swapo
swapoff swapon
[root@54 ~]# swapo
swapoff swapon
[root@54 ~]# swapon --help
Usage:
swapon [options] [<special>]
-a, --all enable all swaps from /etc/fstab
-d, --discard[=<policy>] enable swap discards, if supported by device
-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
-h, --help display help
-V, --version display version
-v, --verbose verbose output
The <special> parameter:
{-L label | LABEL=label} LABEL of device to be used
{-U uuid | UUID=uuid} UUID of device to be used
<device> name of device to be used
<file> name of file to be used
