Example of making snapshot on home sub volume
sudo btrfs subvolume snapshot /home/ /home/snapshot_$(date --iso-8601=seconds)
Example of deleting this snapshot
sudo btrfs subvolume delete snapshot_2023-12-02T23:21:24-06:00
good configuration example with explanations: https://www.jwillikers.com/btrfs-mount-options
Example of my config for a btrfs HDD device.
UUID=63ee14a8-4610-43e5-b42c-d40c02552c18 /mnt/store btrfs defaults,autodefrag,nofail,x-systemd.device-timeout=5,compress=zstd:3 0 0
autodefrag is picked since COW file systems are always bad on fragmentation.
Since This disk is an hdd data disk, I turned on nofail,x-systemd.device-timeout=5 for it to be ignored if not found during boot. See 3.2 in https://wiki.archlinux.org/title/Fstab for explaining this.
This is a big data storage device, thus i've used the compress option.