digression: on macOS it is possible to manage apfs snapshots manually, though it's not great. You take a snapshot with `tmutil snapshot /`, list them with `tmut

digression: on macOS it is possible to manage apfs snapshots manually, though it's not great. You take a snapshot with `tmutil snapshot /`, list them with `tmutil listlocalsnapshots /`, and then use the undocumented `tmutil mountlocalSnapshots / <snapshot date>` command to mount a local snapshot. Deleting a snapshot is frustrating though. macOS thins them automatically as the free disk space diminishes. Or you can sort of trigger snapshot deletion with `tmutil thinlocalsnapshots <mount_point> [purgeamount] [urgency]` but it's not explicit what will get thinned. Also all snapshots are at the root file system level. No where near as powerful as zfs, but enough control for my personal uses without relying too much on the whole time machine GUI.