initramfs-tools autopkgtest fails on armhf: stderr: cryptsetup: ERROR: Couldn't resolve device /dev/sda2

[Benjamin Drung]

The autopkgtest of initramfs-tools fails on armhf on noble:

```
qemu-ata-only SKIP Test lists explicitly supported architectures, but the current architecture armhf isn't listed.
unit-tests PASS
qemu-klibc FAIL stderr: cryptsetup: ERROR: Couldn't resolve device /dev/sda2
qemu-busybox FAIL stderr: cryptsetup: ERROR: Couldn't resolve device /dev/sda2
qemu-virtio-only FAIL stderr: cryptsetup: ERROR: Couldn't resolve device /dev/sda2
qemu-separate-usr FAIL stderr: cryptsetup: ERROR: Couldn't resolve device /dev/sda2
qemu-panic-shell FAIL stderr: cryptsetup: ERROR: Couldn't resolve device /dev/sda2
qemu-net FAIL stderr: cryptsetup: ERROR: Couldn't resolve device /dev/sda2
qemu-net-dnsmasq FAIL stderr: cryptsetup: ERROR: Couldn't resolve device /dev/sda2
```

The /usr/sbin/mkinitramfs call in build_initramfs() has following output:

```
cryptsetup: ERROR: Couldn't resolve device /dev/sda2
cryptsetup: WARNING: Couldn't determine root device
copying from directory /tmp/autopkgtest.g0n4ix/autopkgtest_tmp/initramfs-test.qV8LgntBoK/rootdir
```

The two cryptsetup log lines are printed by /usr/share/initramfs-tools/hooks/cryptroot (which comes from cryptsetup-initramfs)

[Benjamin Drung (bdrung)]

On 2023-12-06 the warning vanished.

[dann frazier (dannf)]

I hit this in mantic on 2024-01-19, so seems to still be an issue:

https://autopkgtest.ubuntu.com/results/autopkgtest-mantic/mantic/armhf/i/initramfs-tools/20240119_180724_10d3d@/log.gz

[dann frazier (dannf)]

Comparing the artifacts between a failed and successful log, the relevant difference appears to be that cryptsetup-initramfs is only installed in the failed log. These errors also appear during the setup phase when package installation causes the initramfs for the host to be updated:

3870s Processing triggers for initramfs-tools (0.142ubuntu15.1) ...
3870s Processing triggers for linux-image-6.5.0-15-generic (6.5.0-15.15) ...
3870s /etc/kernel/postinst.d/initramfs-tools:
3870s update-initramfs: Generating /boot/initrd.img-6.5.0-15-generic
3874s cryptsetup: ERROR: Couldn't resolve device /dev/sda2
3874s cryptsetup: WARNING: Couldn't determine root device

So this seems like a host configuration issue. Is there a LP project for those for which we could add a task?

[Benjamin Drung (bdrung)]

The autopkgtest of initramfs-tools on armhf on noble started to succeed again (roughly on 2023-12-26).

[dann frazier (dannf)]

Yeah - maybe its just the mantic builder image that has the bad cryptsetup config (/etc/crypttab)?