[pkg-cryptsetup-devel] Bug#902245: cryptsetup: Broken volume in initrd with decrypt_gnupg and plain dm-crypt

[skodde]

On Sat, Jun 23, 2018 at 6:50 PM, Guilhem Moulin <guilhem at debian.org> wrote:
> In fact it's not related to the ‘decrypt_gnupg’ keyscript, the
> “size=256” wrongly translates to `cryptsetup --size=256`, which sets the
> size of the device to 256 512-bytes sectors instead of setting the key
> size.

This makes more sense, and it actually explains the wrong size of the volume.

As a workaround, I removed the size= option from crypttab.
It works as expected, although it generates a warning when updating
the initramfs and at boot:

cryptsetup: WARNING: Option 'size' missing in crypttab for plain
dm-crypt mapping root. Please read
/usr/share/doc/cryptsetup/README.initramfs and add the correct 'size'
option to your crypttab(5).

You may want to change the specified README.initramfs path to reflect
the new packages names (i.e.
/usr/share/doc/cryptsetup-initramfs/README.initramfs.gz).


Thanks