Section: systemd-cryptsetup-generator (8)
systemd-cryptsetup-generator is a generator that translates /etc/crypttab into native systemd units early at boot and when configuration of the system manager is reloaded. This will create systemd-cryptsetup@.service(8) units as necessary.
systemd-cryptsetup-generator understands the following kernel command line parameters:
:Takes a LUKS superblock UUID as argument. This will activate the specified device as part of the boot process as if it was listed in /etc/fstab. This option may be specified more than once in order to set up multiple devices. rd.luks.uuid= is honored only by initial RAM disk (initrd) while luks.uuid= is honored by both the main system and the initrd.
If /etc/crypttab contains entries with the same UUID, then the options for this entry will be used.
If /etc/crypttab exists, only those UUID specified on the kernel command line will be activated in the initrd or the real root.
:Takes a LUKS super block UUID followed by an '=' and a string of options separated by commas as argument. This will override the options for the given UUID.
If only a list of options, without an UUID, is specified, they apply to any UUIDs not specified elsewhere, and without an entry in /etc/crypttab.
rd.luks.options= is honored only by initial RAM disk (initrd) while luks.options= is honored by both the main system and the initrd.
:Takes a password file as argument.
For those entries specified with rd.luks.uuid= or luks.uuid=, the password file will be set to the password file specified by rd.luks.key= or luks.key
rd.luks.key= is honored only by initial RAM disk (initrd) while luks.key= is honored by both the main system and the initrd.
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