1、临时关闭
swapoff -a
[root@loongson ~]# free
total used free shared buff/cache available
Mem: 16535264 533056 15548416 41424 453792 14618288
Swap: 8333296 0 8333296
[root@loongson ~]# swapoff -a
[root@loongson ~]# free
total used free shared buff/cache available
Mem: 16535264 531280 15550880 41424 453104 14620416
Swap: 0 0 0
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2、永久关闭
2.1通过修改grub进行关闭swap分区
查看交换设备信息
[root@loongson ~]# cat /etc/fstab
UUID=078770b7-9017-4119-8863-5545673dc1f5 / ext4 defaults 1 1
UUID=f3d7d9a2-7e45-4165-a93c-a8e5a3286e49 /boot ext4 defaults 1 2
UUID=A5E9-3050 /boot/efi vfat umask=0077,shortname=winnt 0 2
UUID=07af0edf-b4ba-4592-bc02-299d156f173a /home ext4 defaults 1 2
#UUID=9a127488-c05d-4ce1-987e-d37e19dc4d8c none swap defaults 0 0
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删除/etc/default/grub中/etc/fstab对应的交换设备
[root@loongson ~]# cat /etc/default/grub.bac
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=false
GRUB_CMDLINE_LINUX_DEFAULT=' '
GRUB_TERMINAL_OUTPUT="console"
#GRUB_CMDLINE_LINUX="crashkernel=auto resume=UUID=9a127488-c05d-4ce1-987e-d37e19dc4d8c rhgb quiet"
GRUB_CMDLINE_LINUX="crashkernel=auto rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
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重新生成grub.cfg
grub2-mkconfig -o /boot/efi/EFI/loongnix-server/grub.cfg
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重启后生效
2.2 如果2.1不生效，可参考此方法通过systemctl进行禁止交换分区
查看交换分区对应的服务
[root@loongson ~]# systemctl | grep swap
dev-sda3.swap loaded active active Swap Partition
swap.target loaded active active Swap
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禁止交换分区
[root@loongson ~]# systemctl mask dev-sda3.swap
Created symlink /etc/systemd/system/dev-sda3.swap → /dev/null.
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注意：重新打开使用systemctl unmask dev-sda3.swap
注释掉交换设备
[root@loongson ~]# cat /etc/fstab
UUID=078770b7-9017-4119-8863-5545673dc1f5 / ext4 defaults 1 1
UUID=f3d7d9a2-7e45-4165-a93c-a8e5a3286e49 /boot ext4 defaults 1 2
UUID=A5E9-3050 /boot/efi vfat umask=0077,shortname=winnt 0 2
UUID=07af0edf-b4ba-4592-bc02-299d156f173a /home ext4 defaults 1 2
#UUID=9a127488-c05d-4ce1-987e-d37e19dc4d8c none swap defaults 0 0
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