UNIT                               LOAD   ACTIVE SUB    DESCRIPTION
statefs.service                    loaded failed failed StateFS FUSE filesystem, system-wide
systemd-tmpfiles-setup-dev.service loaded failed failed Create static device nodes in /dev
systemd-tmpfiles-setup.service     loaded failed failed Recreate Volatile Files and Directories

LOAD   = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB    = The low-level unit activation state, values depend on unit type.

3 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.