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禁用交换内存，如何再次启用？

tag-icon • tag-icon boot partitioning grub2 fstab
禁用交换内存，如何再次启用？

我跑了sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab sudo swapoff -a

这导致没有使用交换内存，从 2 GB 降至 2 GB。（我有 24 GB 的 RAM）。

/etc/fstab

#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda2 during installation
UUID=0446af6d-0bd1-4811-91e7-7663019eecad /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/sda1 during installation
UUID=343C-7C17  /boot/efi       vfat    umask=0077      0       1
# /swapfile                                 none            swap    sw              0       0

答案1

在 /etc/fstab 中注释掉与交换相关的行：

sed -i '/ swap / s/^#\(.*\)$/\1/g' /etc/fstab

然后再次启用交换：

swapon -a -v

选项 -v 告诉您更多信息，操作是否成功

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