Public bug reported:
# Expected
After an update to `initramfs-tools` from 0.142ubuntu25.2 to 0.142ubuntu25.3 I
can boot my system from an encrypted root volume.
# What happened instead
After an update to `initramfs-tools` from 0.142ubuntu25.2 to 0.142ubuntu25.3, I
could no longer boot my system.
The error I was getting is this after entering the correct password:
```
device-mapper: table: 252:0: crypt: unknown target type
device-mapper: ioctl: error adding target to table
device-mapper: reload ioctl on test (252:0) failed: Invalid argument
```
I managed to add set -x to the initramfs scripts, which showed me the
command it uses that leads to this error:
```
/sbin/cryptsetup -T1 --allow-discards '--type=luks' '--key-file=-' open --
/dev/nvme0n1p3 test
```
And my `/etc/crypttab` looks like this:
```
test UUID=9a6218aa-6e36-4f0d-8567-770af1274240 none luks,discard
```
I also tried to add "break" to the kernel line and set up luks manually
via the initramfs shell, which led to the same error.
After quite a significant amount of time randomly trying to load modules
without success, I decided to check what had changed after my last
successful boot in terms of packages. One of the few upgrades was the
one mentioned at the beginning. So I downgraded `initramfs-tools` back
to 0.142ubuntu25.2, it regenerated the image, and the system booted
successfully.
Below you can find additional data about my setup.
I use an LVM setup on top of a luks-encrypted volume. Here is the
overall layout:
```
/dev/nvme0n1p2 on /boot type ext4
/dev/nvme0n1p1 on /boot/efi type vfat
```
Here is the data about my luks setup:
```
# cryptsetup luksDump /dev/nvme0n1p3
<...skipped...>
Data segments:
0: crypt
offset: 16777216 [bytes]
length: (whole device)
cipher: aes-xts-plain64
sector: 512 [bytes]
Keyslots:
0: luks2
Key: 512 bits
Priority: normal
Cipher: aes-xts-plain64
Cipher key: 512 bits
PBKDF: argon2id
<...skipped...>
```
Link to the changes in the broken version of the package:
https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/0.142ubuntu25.3
Kernel versions I tried it with: 6.8.0-44-generic and 6.8.0-45-generic
OS: Ubuntu 24.04.1 LTS
** Affects: initramfs-tools (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2081700
Title:
Can't boot from encrypted volume after initramfs-tools=0.142ubuntu25.3
update
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