为BTRFS文件系统启用SWAP

为btrfs文件系统启用swap

1:首先挂载一个btrfs卷到/swap

mount -o subvol=@swap /dev/disk/by-uuid/6cf264fc-e15b-456f-aaa1-ce7f194e1599 /swap

2:创建swapfile

truncate -s 0 /swap/swapfile
chattr +C /swap/swapfile
btrfs property set /swap/ compression none
dd if=/dev/zero of=/swap/swapfile bs=1M count=2048
chmod 600 /swap/swapfile
mkswap /swap/swapfile
swapon /swap/swapfile
echo "/swap/swapfile none swap defaults,nofail,x-systemd.device-timeout=10s 0 0" | tee -a /etc/fstab