Years ago I've been using Jails with nullfs mounted filesystems to avoid copying data for multiple containers. Nowdays you've ZFS, powerful snapshot system with

Years ago I've been using Jails with nullfs mounted filesystems to avoid copying data for multiple containers. Nowdays you've ZFS, powerful snapshot system with copy-on-write, clones, remote snapshot streaming and many others. Killer feature. And what is FreeBSD being used for? Oh boy, where to start...