With manually partitioned encrypted btrfs root, "unlocking luks2 device" step fails #4327
Description
Which ISO version are you using?
2026.03.01
The installation log
[2026-03-26 19:35:59] - DEBUG - Hardware model detected: LENOVO 20L7002AUS; UEFI mode: True
[2026-03-26 19:35:59] - DEBUG - Processor model detected: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz
[2026-03-26 19:35:59] - DEBUG - Memory statistics: 12301996 available out of 16127924 total installed
[2026-03-26 19:35:59] - DEBUG - Could not detect virtual system: ['/usr/bin/systemd-detect-virt'] exited with abnormal exit code [1]: none
[2026-03-26 19:35:59] - DEBUG - System is not running in a VM: ['/usr/bin/systemd-detect-virt'] exited with abnormal exit code [1]: none
[2026-03-26 19:35:59] - DEBUG - Virtualization detected: None; is VM: False
[2026-03-26 19:35:59] - DEBUG - Graphics devices detected: dict_keys(['Intel Corporation Kaby Lake-R GT2 [UHD Graphics 620] (rev 07)'])
[2026-03-26 19:35:59] - DEBUG - Disk states before installing:
{
"blockdevices": [
{
"name": "loop0",
"path": "/dev/loop0",
"pkname": null,
"log_sec": 512,
"size": "955 MiB",
"pttype": null,
"ptuuid": null,
"rota": false,
"tran": null,
"partn": null,
"partuuid": null,
"parttype": null,
"uuid": null,
"fstype": "squashfs",
"fsver": "4.0",
"fsavail": 0,
"fsuse_percentage": "100%",
"type": "loop",
"mountpoint": "/run/archiso/airootfs",
"mountpoints": [
"/run/archiso/airootfs"
],
"fsroots": [
"/"
],
"children": []
},
{
"name": "sda",
"path": "/dev/sda",
"pkname": null,
"log_sec": 512,
"size": "0 MiB",
"pttype": null,
"ptuuid": null,
"rota": false,
"tran": "usb",
"partn": null,
"partuuid": null,
"parttype": null,
"uuid": null,
"fstype": null,
"fsver": null,
"fsavail": null,
"fsuse_percentage": null,
"type": "disk",
"mountpoint": null,
"mountpoints": [],
"fsroots": [],
"children": []
},
{
"name": "sdb",
"path": "/dev/sdb",
"pkname": null,
"log_sec": 512,
"size": "0 MiB",
"pttype": null,
"ptuuid": null,
"rota": false,
"tran": "usb",
"partn": null,
"partuuid": null,
"parttype": null,
"uuid": null,
"fstype": null,
"fsver": null,
"fsavail": null,
"fsuse_percentage": null,
"type": "disk",
"mountpoint": null,
"mountpoints": [],
"fsroots": [],
"children": []
},
{
"name": "sdc",
"path": "/dev/sdc",
"pkname": null,
"log_sec": 512,
"size": "0 MiB",
"pttype": null,
"ptuuid": null,
"rota": false,
"tran": "usb",
"partn": null,
"partuuid": null,
"parttype": null,
"uuid": null,
"fstype": null,
"fsver": null,
"fsavail": null,
"fsuse_percentage": null,
"type": "disk",
"mountpoint": null,
"mountpoints": [],
"fsroots": [],
"children": []
},
{
"name": "nvme0n1",
"path": "/dev/nvme0n1",
"pkname": null,
"log_sec": 512,
"size": "244198 MiB",
"pttype": null,
"ptuuid": null,
"rota": false,
"tran": "nvme",
"partn": null,
"partuuid": null,
"parttype": null,
"uuid": null,
"fstype": null,
"fsver": null,
"fsavail": null,
"fsuse_percentage": null,
"type": "disk",
"mountpoint": null,
"mountpoints": [],
"fsroots": [],
"children": []
}
]
}
[2026-03-26 19:35:59] - INFO - Fetching Arch Linux package database...
[2026-03-26 19:35:59] - INFO - Checking version...
[2026-03-26 19:36:00] - DEBUG - Failed to check for package upgrades: archinstall
[2026-03-26 19:36:00] - DEBUG - No archinstall upgrades found
[2026-03-26 19:36:00] - DEBUG - Running from ISO (Live Mode)...
[2026-03-26 19:36:28] - DEBUG - load mirrors: True
[2026-03-26 19:45:34] - DEBUG - Creating yescrypt hash with rounds 5
[2026-03-26 19:49:27] - DEBUG - Creating yescrypt hash with rounds 5
[2026-03-26 19:49:43] - DEBUG - Creating yescrypt hash with rounds 5
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/__init__.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/custom.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktop.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/minimal.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/server.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/tailored.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/xorg.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/__init__.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/awesome.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/bspwm.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/budgie.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/cinnamon.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/cosmic.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/cutefish.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/deepin.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/enlightenment.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/gnome.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/hyprland.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/i3.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/labwc.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/lxqt.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/mate.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/niri.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/plasma.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/qtile.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/river.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/sway.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/xfce4.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/desktops/xmonad.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/servers/__init__.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/servers/cockpit.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/servers/docker.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/servers/httpd.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/servers/lighttpd.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/servers/mariadb.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/servers/nginx.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/servers/postgresql.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/servers/sshd.py
[2026-03-26 19:49:54] - DEBUG - Importing profile: /usr/lib/python3.14/site-packages/archinstall/default_profiles/servers/tomcat.py
[2026-03-26 20:00:53] - DEBUG - -- Chosen configuration --
[2026-03-26 20:00:53] - DEBUG - {
"app_config": {
"audio_config": {
"audio": "pipewire"
},
"bluetooth_config": {
"enabled": true
},
"power_management_config": {
"power_management": "power-profiles-daemon"
},
"print_service_config": {
"enabled": true
}
},
"archinstall-language": "English",
"auth_config": {},
"bootloader_config": {
"bootloader": "Systemd-boot",
"removable": false,
"uki": true
},
"custom_commands": [],
"disk_config": {
"btrfs_options": {
"snapshot_config": null
},
"config_type": "manual_partitioning",
"device_modifications": [
{
"device": "/dev/nvme0n1",
"partitions": [
{
"btrfs": [],
"dev_path": null,
"flags": [
"esp",
"boot"
],
"fs_type": "fat32",
"mount_options": [],
"mountpoint": "/efi",
"obj_id": "49a31a2e-1356-433c-839d-903525e7bcba",
"size": {
"sector_size": {
"unit": "B",
"value": 512
},
"unit": "MiB",
"value": 512
},
"start": {
"sector_size": {
"unit": "B",
"value": 512
},
"unit": "MiB",
"value": 1
},
"status": "create",
"type": "primary"
},
{
"btrfs": [],
"dev_path": null,
"flags": [
"bls_boot"
],
"fs_type": "ext4",
"mount_options": [],
"mountpoint": "/boot",
"obj_id": "02dd7395-2e03-49ab-9d69-916f23a72ed1",
"size": {
"sector_size": {
"unit": "B",
"value": 512
},
"unit": "GiB",
"value": 1
},
"start": {
"sector_size": {
"unit": "B",
"value": 512
},
"unit": "B",
"value": 537919488
},
"status": "create",
"type": "primary"
},
{
"btrfs": [
{
"mountpoint": "/",
"name": "root"
}
],
"dev_path": null,
"flags": [],
"fs_type": "btrfs",
"mount_options": [
"compress=zstd"
],
"mountpoint": null,
"obj_id": "cc01d94a-bbdf-4d6e-b09a-480512132a76",
"size": {
"sector_size": {
"unit": "B",
"value": 512
},
"unit": "B",
"value": 254447452160
},
"start": {
"sector_size": {
"unit": "B",
"value": 512
},
"unit": "B",
"value": 1611661312
},
"status": "create",
"type": "primary"
}
],
"wipe": false
}
],
"disk_encryption": {
"encryption_type": "luks",
"lvm_volumes": [],
"partitions": [
"cc01d94a-bbdf-4d6e-b09a-480512132a76"
]
}
},
"hostname": "thinklion",
"kernels": [
"linux"
],
"locale_config": {
"kb_layout": "us",
"sys_enc": "UTF-8",
"sys_lang": "en_US.UTF-8"
},
"mirror_config": {
"custom_repositories": [],
"custom_servers": [],
"mirror_regions": {
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"https://mirrors.rit.edu/archlinux/$repo/os/$arch",
"http://mirror.umd.edu/archlinux/$repo/os/$arch",
"https://mirror.umd.edu/archlinux/$repo/os/$arch",
"http://ftp.osuosl.org/pub/archlinux/$repo/os/$arch",
"https://ftp.osuosl.org/pub/archlinux/$repo/os/$arch",
"http://mirrors.lug.mtu.edu/archlinux/$repo/os/$arch",
"https://mirrors.lug.mtu.edu/archlinux/$repo/os/$arch",
"http://mirrors.xmission.com/archlinux/$repo/os/$arch",
"http://mirrors.kernel.org/archlinux/$repo/os/$arch",
"https://mirrors.kernel.org/archlinux/$repo/os/$arch",
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"http://mirror.sfo12.us.leaseweb.net/archlinux/$repo/os/$arch",
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"https://mirror.sfo12.us.leaseweb.net/archlinux/$repo/os/$arch",
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"http://dfw.mirror.rackspace.com/archlinux/$repo/os/$arch",
"http://iad.mirror.rackspace.com/archlinux/$repo/os/$arch",
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"https://mirrors.ocf.berkeley.edu/archlinux/$repo/os/$arch",
"http://arlm.tyzoid.com/$repo/os/$arch",
"https://arlm.tyzoid.com/$repo/os/$arch",
"http://mirror.math.princeton.edu/pub/archlinux/$repo/os/$arch",
"http://us.mirrors.cicku.me/archlinux/$repo/os/$arch",
"https://us.mirrors.cicku.me/archlinux/$repo/os/$arch",
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"https://mirrors.xtom.com/archlinux/$repo/os/$arch",
"http://mirror.siena.edu/archlinux/$repo/os/$arch",
"http://repo.ialab.dsu.edu/archlinux/$repo/os/$arch",
"https://repo.ialab.dsu.edu/archlinux/$repo/os/$arch",
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"https://arch.hu.fo/archlinux/$repo/os/$arch",
"https://zxcvfdsa.com/arch/$repo/os/$arch",
"https://mirror.theash.xyz/arch/$repo/os/$arch",
"http://mirror.clarkson.edu/archlinux/$repo/os/$arch",
"https://mirror.clarkson.edu/archlinux/$repo/os/$arch",
"http://mirrors.bloomu.edu/archlinux/$repo/os/$arch",
"https://mirrors.bloomu.edu/archlinux/$repo/os/$arch",
"http://codingflyboy.mm.fcix.net/archlinux/$repo/os/$arch",
"http://coresite.mm.fcix.net/archlinux/$repo/os/$arch",
"http://forksystems.mm.fcix.net/archlinux/$repo/os/$arch",
"http://irltoolkit.mm.fcix.net/archlinux/$repo/os/$arch",
"http://mirror.fcix.net/archlinux/$repo/os/$arch",
"http://nnenix.mm.fcix.net/archlinux/$repo/os/$arch",
"http://nocix.mm.fcix.net/archlinux/$repo/os/$arch",
"http://ohioix.mm.fcix.net/archlinux/$repo/os/$arch",
"http://opencolo.mm.fcix.net/archlinux/$repo/os/$arch",
"http://southfront.mm.fcix.net/archlinux/$repo/os/$arch",
"http://volico.mm.fcix.net/archlinux/$repo/os/$arch",
"http://ziply.mm.fcix.net/archlinux/$repo/os/$arch",
"https://codingflyboy.mm.fcix.net/archlinux/$repo/os/$arch",
"https://coresite.mm.fcix.net/archlinux/$repo/os/$arch",
"https://forksystems.mm.fcix.net/archlinux/$repo/os/$arch",
"https://irltoolkit.mm.fcix.net/archlinux/$repo/os/$arch",
"https://mirror.fcix.net/archlinux/$repo/os/$arch",
"https://nnenix.mm.fcix.net/archlinux/$repo/os/$arch",
"https://nocix.mm.fcix.net/archlinux/$repo/os/$arch",
"https://ohioix.mm.fcix.net/archlinux/$repo/os/$arch",
"https://opencolo.mm.fcix.net/archlinux/$repo/os/$arch",
"https://southfront.mm.fcix.net/archlinux/$repo/os/$arch",
"https://volico.mm.fcix.net/archlinux/$repo/os/$arch",
"https://ziply.mm.fcix.net/archlinux/$repo/os/$arch",
"https://losangeles.mirror.pkgbuild.com/$repo/os/$arch",
"http://mirrors.vectair.net/archlinux/$repo/os/$arch",
"https://mirrors.vectair.net/archlinux/$repo/os/$arch",
"https://arch.mirror.k0.ae/$repo/os/$arch",
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"http://arch.miningtcup.me/$repo/os/$arch",
"https://arch.miningtcup.me/$repo/os/$arch",
"https://arch-mirror.brightlight.today/$repo/os/$arch",
"https://mirrors.lahansons.com/archlinux/$repo/os/$arch",
"https://mirror.givebytes.net/archlinux/$repo/os/$arch",
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"https://mirrors.shr.cx/arch/$repo/os/$arch",
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"http://arch.hugeblank.dev/$repo/os/$arch",
"https://arch.hugeblank.dev/$repo/os/$arch",
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],
"Worldwide": [
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"https://mirror.rackspace.com/archlinux/$repo/os/$arch",
"https://ftpmirror.infania.net/mirror/archlinux/$repo/os/$arch",
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"https://fastly.mirror.pkgbuild.com/$repo/os/$arch"
]
},
"optional_repositories": [
"multilib"
]
},
"network_config": {
"type": "nm"
},
"ntp": true,
"packages": [],
"parallel_downloads": 0,
"profile_config": {
"gfx_driver": "Intel (open-source)",
"greeter": "sddm",
"profile": {
"custom_settings": {
"KDE Plasma": {}
},
"details": [
"KDE Plasma"
],
"main": "Desktop"
}
},
"script": null,
"services": [],
"swap": {
"algorithm": "zstd",
"enabled": true
},
"timezone": "America/Los_Angeles",
"version": "3.0.15"
}
[2026-03-26 20:00:59] - DEBUG - Unmounting all existing partitions: /dev/nvme0n1
[2026-03-26 20:00:59] - INFO - Use existing device: /dev/nvme0n1
[2026-03-26 20:00:59] - INFO - Creating partitions: /dev/nvme0n1
[2026-03-26 20:00:59] - DEBUG - Type: primary
[2026-03-26 20:00:59] - DEBUG - Filesystem: fat32
[2026-03-26 20:00:59] - DEBUG - Geometry: 2048 start sector, 1048576 length
[2026-03-26 20:00:59] - DEBUG - Type: primary
[2026-03-26 20:00:59] - DEBUG - Filesystem: ext4
[2026-03-26 20:00:59] - DEBUG - Geometry: 1050624 start sector, 2097152 length
[2026-03-26 20:00:59] - DEBUG - Type: primary
[2026-03-26 20:00:59] - DEBUG - Filesystem: btrfs
[2026-03-26 20:00:59] - DEBUG - Geometry: 3147776 start sector, 496967680 length
[2026-03-26 20:00:59] - DEBUG - Wiping signatures from: /dev/nvme0n1p1
[2026-03-26 20:00:59] - DEBUG - Wiping signatures from: /dev/nvme0n1p2
[2026-03-26 20:00:59] - DEBUG - Wiping signatures from: /dev/nvme0n1p3
[2026-03-26 20:00:59] - DEBUG - Formatting filesystem: mkfs.fat -F 32 /dev/nvme0n1p1
[2026-03-26 20:01:00] - DEBUG - partition information found: {"name":"nvme0n1p1","path":"/dev/nvme0n1p1","pkname":"nvme0n1","log_sec":512,"size":"512 MiB","pttype":"gpt","ptuuid":"af8fc713-2a27-4d4d-9351-a6fa5ac50cbb","rota":false,"tran":"nvme","partn":1,"partuuid":"f02fba50-2435-4210-a712-d21bffceecb5","parttype":"c12a7328-f81f-11d2-ba4b-00a0c93ec93b","uuid":"07BE-CBE6","fstype":"vfat","fsver":"FAT32","fsavail":null,"fsuse_percentage":null,"type":"part","mountpoint":null,"mountpoints":[],"fsroots":[],"children":[]}
[2026-03-26 20:01:00] - DEBUG - Formatting filesystem: mkfs.ext4 -F /dev/nvme0n1p2
[2026-03-26 20:01:00] - DEBUG - partition information found: {"name":"nvme0n1p2","path":"/dev/nvme0n1p2","pkname":"nvme0n1","log_sec":512,"size":"1024 MiB","pttype":"gpt","ptuuid":"af8fc713-2a27-4d4d-9351-a6fa5ac50cbb","rota":false,"tran":"nvme","partn":2,"partuuid":"78816f9b-f40f-42da-8542-646fb69a776a","parttype":"bc13c2ff-59e6-4262-a352-b275fd6f7172","uuid":"764a3301-3243-4767-893e-be5034006bce","fstype":"ext4","fsver":"1.0","fsavail":null,"fsuse_percentage":null,"type":"part","mountpoint":null,"mountpoints":[],"fsroots":[],"children":[]}
[2026-03-26 20:01:00] - DEBUG - Luks2 encrypting: /dev/nvme0n1p3
[2026-03-26 20:01:00] - DEBUG - cryptsetup format: cryptsetup --batch-mode --verbose --type luks2 --pbkdf argon2id --hash sha512 --key-size 512 --iter-time 10000 --use-urandom luksFormat /dev/nvme0n1p3
[2026-03-26 20:01:30] - DEBUG - cryptsetup luksFormat output: Key slot 0 created.
Command successful.
[2026-03-26 20:01:30] - DEBUG - Unlocking luks2 device: /dev/nvme0n1p3
[2026-03-26 20:01:41] - ERROR - Traceback (most recent call last):
File "/usr/lib/python3.14/site-packages/archinstall/__init__.py", line 134, in run_as_a_module
rc = main()
File "/usr/lib/python3.14/site-packages/archinstall/__init__.py", line 124, in main
importlib.import_module(mod_name)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/usr/lib/python3.14/importlib/__init__.py", line 88, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib._bootstrap>", line 1398, in _gcd_import
File "<frozen importlib._bootstrap>", line 1371, in _find_and_load
File "<frozen importlib._bootstrap>", line 1342, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 938, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 759, in exec_module
File "<frozen importlib._bootstrap>", line 491, in _call_with_frames_removed
File "/usr/lib/python3.14/site-packages/archinstall/scripts/guided.py", line 216, in <module>
guided()
~~~~~~^^
File "/usr/lib/python3.14/site-packages/archinstall/scripts/guided.py", line 211, in guided
fs_handler.perform_filesystem_operations()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3.14/site-packages/archinstall/lib/disk/filesystem.py", line 70, in perform_filesystem_operations
self._format_partitions(mod.partitions)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
File "/usr/lib/python3.14/site-packages/archinstall/lib/disk/filesystem.py", line 93, in _format_partitions
device_handler.format_encrypted(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
part_mod.safe_dev_path,
^^^^^^^^^^^^^^^^^^^^^^^
...<2 lines>...
self._enc_config,
^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.14/site-packages/archinstall/lib/disk/device_handler.py", line 358, in format_encrypted
luks_handler.unlock(key_file=key_file)
~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.14/site-packages/archinstall/lib/luks.py", line 158, in unlock
result = run(cmd, input_data=passphrase)
File "/usr/lib/python3.14/site-packages/archinstall/lib/general.py", line 459, in run
return subprocess.run(
~~~~~~~~~~~~~~^
cmd,
^^^^
...<3 lines>...
check=True,
^^^^^^^^^^^
)
^
File "/usr/lib/python3.14/subprocess.py", line 577, in run
raise CalledProcessError(retcode, process.args,
output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['cryptsetup', 'open', '/dev/nvme0n1p3', 'root', '--type', 'luks2']' returned non-zero exit status 5.
[2026-03-26 20:01:41] - WARNING - Archinstall experienced the above error. If you think this is a bug, please report it to
https://github.com/archlinux/archinstall and include the log file "/var/log/archinstall/install.log".
Hint: To extract the log from a live ISO
curl -F 'file=@/var/log/archinstall/install.log' https://0x0.stdescribe the problem
With manually partitioned encrypted btrfs root, "unlocking luks2 device" step fails.
Specifically:
cryptsetup open /dev/nvme0n1p3 root --type luks2
fails with return code 6.
The error log does not include the stderr of cryptsetup, but if I run the same command again manually afterwards, I get:
(Hand-copied because it's in a tty)
device-mapper: table: 253:0 crypt: unknown table type
device-mapper: ioctl: error adding target to table
device-mapper: reload ioctl on root (253:0) failed: Invalid argument
archinstall was updated with pacman before starting.
Notably, if you choose "best effort default partitioning layout", even with an encrypted btrfs root, it does not fail.