Ubuntu
cryptsetup package

  1. Bug #1979159
  2. Comment #19

Comment 19 for bug 1979159

Revision history for this message
Steve Langasek (vorlon) wrote : Re: [Bug 1979159] Re: Cannot unlock encrypted root after upgrading to 22.04

On Mon, Aug 01, 2022 at 06:58:20PM -0000, Benjamin Drung wrote:
> 1. Get the list of encrypted disks:
> dmsetup ls --target crypt
> 2. Map the disk name (e.g. system_crypt) to a dm-X name:
> readlink -f readlink -f /dev/mapper/$name
> 3. Get slave device (i.e. the underlying disk):
> ls -1 /sys/block/dm-X/slaves/
> 4. For each underlying disk check the cipher mode / hash spec:
> cryptsetup luksDump /dev/$disk | grep "^Hash spec: $legacy"
> 5. If the cipher mode / hash spec is legacy, include /usr/lib/x86_64-linux-gnu/ossl-modules/legacy.so

That seems pretty complicated, vs simply including legacy.so
unconditionally. The size increase is trivial compared to the plymouth
graphics stack, so I don't see any reason not to?