3 ms·
Quoting the man page: At early boot and when the system manager configuration reloaded, /etc/crypttab is translated systemd-cryptsetup@.service units by system
by dathinab 6y ago
Quoting the man page:
At early boot and when the system manager configuration reloaded, /etc/crypttab is translated systemd-cryptsetup@.service units by systemd-cryptsetup-generator(8).
So this should run during mkinitcpios systemd hook, I think (i.e.during "initramfs times").
EDIT: Also as a service it can also run later one if you e.g. plug in a LUKS encrypted hard drive I think. I haven't tried it out.