暗号交換装置の待機中にタイムアウトエラーが発生しました。

オペレーティングシステム：Parabola GNU / Linux Libre、ArchのGNUバージョン。

ルートパーティションを暗号化しましたが、スワップパーティションを暗号化する方法がわかりません。スワップパーティションは使用されなくなり、スワップファイルが優先されることがわかりますが、btrfsはまだそれをサポートしていません。

LSBLK

NAME          MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
sda             8:0    0 223.6G  0 disk  
├─sda2          8:2    0 221.1G  0 part  
│ └─cryptroot 254:0    0 221.1G  0 crypt /
├─sda3          8:3    0     2G  0 part  
│ └─cryptswap 254:1    0     2G  0 crypt 
└─sda1          8:1    0   512M  0 part  /boot

/etc/fstab

# /dev/mapper/cryptroot
UUID=0126cb9b-d3aa-4f05-a39a-71682fa847bb       /               btrfs           rw,relatime,ssd,space_cache,subvolid=5,subvol=/ 0 0

# /dev/sda1
UUID=6F37-84A2          /boot           vfat            rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro      0 2

# /dev/mapper/cryptswap
UUID=aef00636-0183-48d1-ab87-8f6653a30dd8       none            swap            defaults        0 0

/boot/loader/entries/parabola.conf

title Parabola GNU/Linux-libre
linux /vmlinuz-linux-libre
initrd /initramfs-linux-libre.img
options rd.luks.uuid=c6b69115-15c6-4561-9691-fc4a05ac9622 rd.luks.name=c6b69115-15c6-4561-9691-fc4a05ac9622=cryptroot rd.luks.options=quiet rw root=/dev/mapper/cryptroot

/etc/crypttab

# crypttab: mappings for encrypted partitions
#
# Each mapped device will be created in /dev/mapper, so your /etc/fstab
# should use the /dev/mapper/<name> paths for encrypted devices.
#
# The Parabola specific syntax has been deprecated, see crypttab(5) for the
# new supported syntax.
#
# NOTE: Do not list your root (/) partition here, it must be set up
#       beforehand by the initramfs (/etc/mkinitcpio.conf).

# <name>       <device>                                                     <password>              <options>
cryptswap      /dev/disk/by-id/ata-PH4-CE240_511160905070017677-part3       /dev/urandom            swap

logctl -b

Dec 22 23:35:54 MyComputer mkswap[341]: Setting up swapspace version 1, size = 2 GiB (2147459072 bytes)
Dec 22 23:35:54 MyComputer mkswap[341]: no label, UUID=c965e98e-b011-4e40-aef3-bb84d58d7a08
Dec 22 23:35:54 MyComputer systemd[1]: Started Cryptography Setup for swap.
Dec 22 23:35:54 MyComputer systemd[1]: Reached target Encrypted Volumes.
Dec 22 23:35:54 MyComputer systemd[1]: Found device /dev/mapper/swap.
Dec 22 23:37:23 MyComputer systemd[1]: dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.device: Job dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.device/start timed out.
Dec 22 23:37:23 MyComputer systemd[1]: Timed out waiting for device dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.device.
Dec 22 23:37:23 MyComputer systemd[1]: Dependency failed for /dev/disk/by-uuid/aef00636-0183-48d1-ab87-8f6653a30dd8.
Dec 22 23:37:23 MyComputer systemd[1]: Dependency failed for Swap.
Dec 22 23:37:23 MyComputer systemd[1]: swap.target: Job swap.target/start failed with result 'dependency'.
Dec 22 23:37:23 MyComputer systemd[1]: dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.swap: Job dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.swap/start failed with result 'dependency'.
Dec 22 23:37:23 MyComputer systemd[1]: dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.device: Job dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.device/start failed with result 'timeout'.
Dec 22 23:37:23 MyComputer systemd[1]: Mounting Temporary Directory...
Dec 22 23:37:23 MyComputer systemd[1]: Mounted Temporary Directory.
Dec 22 23:37:23 MyComputer systemd[1]: Reached target Local File Systems.
Dec 22 23:37:23 MyComputer systemd[1]: Starting Create Volatile Files and Directories...
Dec 22 23:37:23 MyComputer systemd[1]: Started Create Volatile Files and Directories.
Dec 22 23:37:23 MyComputer systemd[1]: Starting Update UTMP about System Boot/Shutdown...
Dec 22 23:37:23 MyComputer systemd[1]: Started Update UTMP about System Boot/Shutdown.
Dec 22 23:37:23 MyComputer systemd[1]: Reached target System Initialization.
Dec 22 23:37:23 MyComputer systemd[1]: Started Daily Cleanup of Temporary Directories.
Dec 22 23:37:23 MyComputer systemd[1]: Started Daily verification of password and group files.
Dec 22 23:37:23 MyComputer systemd[1]: Listening on D-Bus System Message Bus Socket.
Dec 22 23:37:23 MyComputer systemd[1]: Reached target Sockets.
Dec 22 23:37:23 MyComputer systemd[1]: Reached target Basic System.
Dec 22 23:37:23 MyComputer systemd[1]: Starting Save/Restore Sound Card State...
Dec 22 23:37:23 MyComputer systemd[1]: Starting dhcpcd on enp4s0...
Dec 22 23:37:23 MyComputer systemd[1]: Starting Login Service...
Dec 22 23:37:23 MyComputer systemd[1]: Started D-Bus System Message Bus.
...
Dec 24 00:00:09 MyComputer systemd[1]: Started Update man-db cache.
Dec 24 00:01:36 MyComputer systemd[1]: dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.device: Job dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.device/start timed out.
Dec 24 00:01:36 MyComputer systemd[1]: Timed out waiting for device dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.device.
Dec 24 00:01:36 MyComputer systemd[1]: Dependency failed for /dev/disk/by-uuid/aef00636-0183-48d1-ab87-8f6653a30dd8.
Dec 24 00:01:36 MyComputer systemd[1]: dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.swap: Job dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.swap/start failed with result 'dependency'.
Dec 24 00:01:36 MyComputer systemd[1]: dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.device: Job dev-disk-by\x2duuid-aef00636\x2d0183\x2d48d1\x2dab87\x2d8f6653a30dd8.device/start failed with result 'timeout'.

【書き直す】

新しい情報が明らかになった。暗号化が必要なスワップパーティションが認識されないようです。

【書き直す】

上記の結果、以下を試しました。

parted 
rm 3
mkpart primary ext2 -2GiB 100%
(Ignore)
quit
dd if=/dev/urandom of=/dev/sda3 bs=1M
cryptsetup -v -y luksFormat /dev/sda3 
YES
cryptsetup open /dev/sda3 cryptswap
mkswap /dev/mapper/cryptswap
swapon /dev/mapper/cryptswap

【書き直す】

ParabolaのLive MATEバージョンでは、上記のようにパーティションを暗号化するとエラーが返されます。

1 root@parabolaiso / # cryptsetup -y -v luksFormat /dev/sda3 --debug                                                                            :(
# cryptsetup 1.7.3 processing "cryptsetup -y -v luksFormat /dev/sda3 --debug"
# Running command luksFormat.
# Locking memory.
# Installing SIGINT/SIGTERM handler.
# Unblocking interruption on signal.

WARNING!
========
This will overwrite data on /dev/sda3 irrevocably.

Are you sure? (Type uppercase yes): YES
# Allocating crypt device /dev/sda3 context.
# Trying to open and read device /dev/sda3 with direct-io.
# Initialising device-mapper backend library.
# Timeout set to 0 miliseconds.
# Iteration time set to 2000 milliseconds.
# Interactive passphrase entry requested.
Enter passphrase: 
Verify passphrase: 
# Formatting device /dev/sda3 as type LUKS1.
# Crypto backend (gcrypt 1.7.5) initialized in cryptsetup library version 1.7.3.
# Detected kernel Linux 4.8.6-gnu-1 x86_64.
# Topology: IO (512/0), offset = 0; Required alignment is 1048576 bytes.
# Checking if cipher aes-xts-plain64 is usable.
# Userspace crypto wrapper cannot use aes-xts-plain64 (-95).
# Using dmcrypt to access keyslot area.
# Calculated device size is 1 sectors (RW), offset 0.
# dm version   [ opencount flush ]   [16384] (*1)
# dm versions   [ opencount flush ]   [16384] (*1)
# Device-mapper backend running with UDEV support enabled.
# DM-UUID is CRYPT-TEMP-temporary-cryptsetup-10670
# dm versions   [ opencount flush ]   [16384] (*1)
# Device-mapper backend running with UDEV support enabled.
# Udev cookie 0xd4d2344 (semid 65536) created
# Udev cookie 0xd4d2344 (semid 65536) incremented to 1
# Udev cookie 0xd4d2344 (semid 65536) incremented to 2
# Udev cookie 0xd4d2344 (semid 65536) assigned to CREATE task(0) with flags DISABLE_SUBSYSTEM_RULES DISABLE_DISK_RULES DISABLE_OTHER_RULES         (0xe)
# dm create temporary-cryptsetup-10670 CRYPT-TEMP-temporary-cryptsetup-10670 [ opencount flush ]   [16384] (*1)
# dm reload temporary-cryptsetup-10670  [ opencount flush readonly ]   [16384] (*1)
device-mapper: reload ioctl on temporary-cryptsetup-10670 failed: Invalid argument
# Udev cookie 0xd4d2344 (semid 65536) decremented to 1
# Udev cookie 0xd4d2344 (semid 65536) incremented to 2
# Udev cookie 0xd4d2344 (semid 65536) assigned to REMOVE task(2) with flags DISABLE_SUBSYSTEM_RULES DISABLE_DISK_RULES DISABLE_OTHER_RULES         (0xe)
# dm remove temporary-cryptsetup-10670  [ opencount flush readonly ]   [16384] (*1)
# temporary-cryptsetup-10670: Stacking NODE_DEL [verify_udev]
# Udev cookie 0xd4d2344 (semid 65536) decremented to 0
# Udev cookie 0xd4d2344 (semid 65536) waiting for zero
# Udev cookie 0xd4d2344 (semid 65536) destroyed
# temporary-cryptsetup-10670: Processing NODE_DEL [verify_udev]
# dm versions   [ opencount flush ]   [16384] (*1)
# Device-mapper backend running with UDEV support enabled.
Failed to setup dm-crypt key mapping for device /dev/sda3.
Check that kernel supports aes-xts-plain64 cipher (check syslog for more info).
# Releasing crypt device /dev/sda3 context.
# Releasing device-mapper backend.
# Unlocking memory.
Command failed with code 5: Input/output error

【書き直す】

私は実際にsystemd-swapを使ってこの問題を解決しました（何もないよりも優れています）。 btrfsが実際のスワップをサポートするのを待ちます。