[Bug 1980018] Re: Cryptsetup-initramfs cant deal with tpm2-device option

[Ari]

I've been using the @wmcelderry patches for some time on 22.04.2 and
they work great - so much better than using Clevis (clevis also works
but takes like 20s to open the disk on every boot).

Looking forward to seeing these patches adopted by ubuntu for the next
release to make tpm2 usable

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Title:
  Cryptsetup-initramfs cant deal with tpm2-device option

Status in cryptsetup package in Ubuntu:
  Triaged

Bug description:
  In order to boot an encrypted system and autounlock with tpm2, the
  tpm2-device= option must be specified in  /etc/crypttab. This works
  for non-root filesystems for some reason, but when applied to root
  filesystems it doesnt. Tested working on both arch and fedora, so the
  method is good, something is off in the background.


  root at test:~# update-initramfs -u
  update-initramfs: Generating /boot/initrd.img-5.15.0-40-generic
  cryptsetup: WARNING: sda3_crypt: ignoring unknown option 'tpm2-device'

  
  Manually adding it to  /lib/cryptsetup/functions produces this

  root at test:~# update-initramfs -u
  update-initramfs: Generating /boot/initrd.img-5.15.0-40-generic
  /usr/share/initramfs-tools/hooks/cryptroot: 1: eval: CRYPTTAB_OPTION_tpm2-device=auto: not found

  
  That file belongs to cryptsetup-initramfs

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