To increase the size of the swap on my OpenBSD Virtual Private Server with the help of a swap file, I used the following commands:

# create file and set permissions
doas dd if=/dev/zero of=/home/swapfile bs=1m count=512
doas chmod 600 /home/swapfile
# activate swap (swapon)
doas swapctl -a /home/swapfile
# make permanent
echo '/home/swapfile none swap sw' | doas tee -a /etc/fstab

I used the /home partition for the swap file, since it was the one with the most free disk space on my tiny VPS.

Welcome to Puffy, the name of this blog, which is hosted on a VPS that shall be described in this post. Puffy is of course also the name of the mascot, a blowfish, of the absolutely amazing OpenBSD project.