Arch Linux

Description:

Since the ARM architecture is not officially supported perhaps I should not be reporting the issue here. However, it does seem to be related to the upstream mkinitcpio package. I have already reported the issue in the related forum (https://archlinuxarm.org) but haven't had any response yet (newest package fix request can be found here https://archlinuxarm.org/forum/viewtopic.php?f=15&t=11907)

The problem:

There seem to be a problem with the initramfs generated by mkinitcpio for a LUKS encrypted root partition on the ArchLinux ODROID-C2 platform.

Additional info:

* mkinitcpio 23-1.1
* mkinitcpio-busybox 1.26.1-1
* systemd 234.11-4
* uname -a: Linux alarm 3.14.79-27-ARCH #1 SMP PREEMPT Mon Jul 10 19:29:37 MDT 2017 aarch64 GNU/Linux


Steps to reproduce:

I encrypted the rootfs of the [url=https://archlinuxarm.org/platforms/armv8/amlogic/odroid-c2]ArchLinux ODROID-C2 image[/url] using [url=https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system#LUKS_on_LVM]LUKS on LVM[/url]

According to instructions, I edited `/etc/mkinitcpio.conf`, and added `encrypt lvm2` BEFORE `filesystems` in `HOOKS`, and `xts sha512-generic dm-crypt dm-mod` to `MODULES`, as follows

[code]
MODULES="xts sha512_generic dm-crypt dm-mod"
HOOKS="base udev autodetect modconf block encrypt lvm2 filesystems keyboard fsck"
[/code]

Then generated a new initramfs image (https://wiki.archlinux.org/index.php/Mkinitcpio#Using_encrypted_root)

[code]
# mkinitcpio -p linux-odroid-c2
==> Building image from preset: /etc/mkinitcpio.d/linux-odroid-c2.preset: 'default'
-> -k 3.14.79-27-ARCH -c /etc/mkinitcpio.conf -g /boot/initramfs-linux.img
==> Starting build: 3.14.79-27-ARCH
-> Running build hook: [base]
-> Running build hook: [udev]
-> Running build hook: [autodetect]
-> Running build hook: [modconf]
-> Running build hook: [block]
-> Running build hook: [encrypt]
-> Running build hook: [lvm2]
==> ERROR: module not found: `dm_cache_smq'
-> Running build hook: [filesystems]
-> Running build hook: [keyboard]
-> Running build hook: [fsck]
==> Generating module dependencies
==> Creating gzip-compressed initcpio image: /boot/initramfs-linux.img
==> WARNING: errors were encountered during the build. The image may not be complete.
[/code]

And edited `boot/boot.ini` to adjust the u-boot boot loader configuration to boot from the encrypted partition:

[code]
setenv bootargs "root=/dev/mapper/vg-root cryptdevice=/dev/mmcblk0p2:lvm rootwait ro ${condev} no_console_suspend hdmitx=${cec} ${forcergb} hdmimode=${m} m_bpp=${m_bpp} vout=${vout} fsck.repair=yes elevator=noop disablehpd=${hpd} ${cmode} max_freq=${max_freq} maxcpus=${maxcpus} monitor_onoff=${monitor_onoff} disableuhs=${disableuhs} mmc_removable=${mmc_removable} usbmulticam=${usbmulticam} net.ifnames=0"
[/code]

However, when I reboot I get no prompt to enter the LUKS password and the system does not boot. Here is the [url=https://gist.github.com/g000444555/2597ca81258d3b9f621945d5b6ffbb5c]serial console output[/url]. Also, the complete setup is summarised in this [url=https://gist.github.com/g000444555/96a90bc1470d4a2b59d6ac027e45f93f]gist[/url].