Ok, so lvm2 was not broken, but initramfs was!
./initramfs-tools-0.103ubuntu4.11/scripts/functions: ln -s "$0" /tmp/mountroot-fail-hooks.d/"$1" ./initramfs-tools-0.122ubuntu8.16/scripts/functions: ln -s "$0" /tmp/mountroot-fail-hooks.d/"$1" ./initramfs-tools-0.125ubuntu12.2/scripts/functions: ln -s "$0" /tmp/mountroot-fail-hooks.d/"$1" ./initramfs-tools-0.130ubuntu3.9/scripts/functions: ln -s "$0" /tmp/mountroot-fail-hooks.d/"$1" ./initramfs-tools-0.131ubuntu15.2/scripts/functions: ln -s "$0" /tmp/mountroot-fail-hooks.d/"$1" ./initramfs-tools-0.131ubuntu19.2/scripts/functions: ln -s "$0" /tmp/mountroot-fail-hooks.d/"$1" ./initramfs-tools-0.133ubuntu10/scripts/functions: ln -s "$0" /tmp/mountroot-fail-hooks.d/"$1" ./initramfs-tools-0.136ubuntu6/scripts/functions: ln -s "$0" /tmp/mountroot-fail-hooks.d/"$0" ./initramfs-tools-0.137ubuntu7/scripts/functions: ln -s "$0" /tmp/mountroot-fail-hooks.d/"$0" ./initramfs-tools-0.99ubuntu13.5/scripts/functions: ln -s "$0" /tmp/mountroot-fail-hooks.d/"$1"
Ok, so lvm2 was not broken, but initramfs was!
./initramfs- tools-0. 103ubuntu4. 11/scripts/ functions: ln -s "$0" /tmp/mountroot- fail-hooks. d/"$1" tools-0. 122ubuntu8. 16/scripts/ functions: ln -s "$0" /tmp/mountroot- fail-hooks. d/"$1" tools-0. 125ubuntu12. 2/scripts/ functions: ln -s "$0" /tmp/mountroot- fail-hooks. d/"$1" tools-0. 130ubuntu3. 9/scripts/ functions: ln -s "$0" /tmp/mountroot- fail-hooks. d/"$1" tools-0. 131ubuntu15. 2/scripts/ functions: ln -s "$0" /tmp/mountroot- fail-hooks. d/"$1" tools-0. 131ubuntu19. 2/scripts/ functions: ln -s "$0" /tmp/mountroot- fail-hooks. d/"$1" tools-0. 133ubuntu10/ scripts/ functions: ln -s "$0" /tmp/mountroot- fail-hooks. d/"$1" tools-0. 136ubuntu6/ scripts/ functions: ln -s "$0" /tmp/mountroot- fail-hooks. d/"$0" tools-0. 137ubuntu7/ scripts/ functions: ln -s "$0" /tmp/mountroot- fail-hooks. d/"$0" tools-0. 99ubuntu13. 5/scripts/ functions: ln -s "$0" /tmp/mountroot- fail-hooks. d/"$1"
./initramfs-
./initramfs-
./initramfs-
./initramfs-
./initramfs-
./initramfs-
./initramfs-
./initramfs-
./initramfs-