I manage an Ubuntu server part-time in a scientific research laboratory, which has 512G memory and 8G swap space. Recently, we occasionally encounter low-frequency memory shortage, so I plan to expand the swap space. Currently, this server cannot accept any shutdown or accident. I find that they all recommend restarting the device after configuring the swap,
and I'm not sure if I can avoid this
My plan is:
First, find current swap file
$ sudo swapon --show
NAME TYPE SIZE USED PRIO
/swap.img file 8G 7.3G -2
swap off and remove
sudo swapoff /swap.img
sudo rm /swap.img
create new swap file
sudo dd if=/dev/zero of=/swap.img bs=1M count=92160
sudo chmod 600 /swap.img
create swap
sudo mkswap /swap.img
enable swap
sudo swapon /swap.img
# not reboot
Is it ok and safe to do?
