Public bug reported:
root@eu1:/var/log# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04 LTS
Release: 20.04
Codename: focal
root@eu1:/var/log# apt-cache policy cryptsetup
cryptsetup:
Installed: (none)
Candidate: 2:2.2.2-3ubuntu2
Version table:
2:2.2.2-3ubuntu2 500
500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
OTHER BACKGROUND INFO:
======================
1. machine has 2 drives. each drive is partitioned into 2 partitions,
zfs and swap
2. Ubuntu 20.04 installed on ZFS root using debootstrap
(debootstrap_1.0.118ubuntu1_all)
3. The ZFS root pool is a 2 partition mirror (the first partition of each disk)
4. /etc/crypttab is set up as follows:
swap /dev/disk/by-id/nvme-SAMSUNG_MZVLB1T0HALR-00000_S3W6NX0M802914-part2
/dev/urandom swap,cipher=aes-xts-plain64,size=256
swap /dev/disk/by-id/nvme-SAMSUNG_MZVLB1T0HALR-00000_S3W6NX0M802933-part2
/dev/urandom swap,cipher=aes-xts-plain64,size=256
WHAT I EXPECTED
===============
I expected machine would reboot and have encrypted swap that used two
devices under /dev/mapper
WHAT HAPPENED INSTEAD
=====================
On reboot, swap setup fails with the following messages in /var/log/syslog:
Apr 28 17:13:01 eu1 kernel: [ 5.360793] systemd[1]: cryptsetup.target: Found
ordering cycle on systemd-cryptsetup@swap.service/start
Apr 28 17:13:01 eu1 kernel: [ 5.360795] systemd[1]: cryptsetup.target: Found
dependency on systemd-random-seed.service/start
Apr 28 17:13:01 eu1 kernel: [ 5.360796] systemd[1]: cryptsetup.target: Found
dependency on zfs-mount.service/start
Apr 28 17:13:01 eu1 kernel: [ 5.360797] systemd[1]: cryptsetup.target: Found
dependency on zfs-load-module.service/start
Apr 28 17:13:01 eu1 kernel: [ 5.360798] systemd[1]: cryptsetup.target: Found
dependency on cryptsetup.target/start
Apr 28 17:13:01 eu1 kernel: [ 5.360799] systemd[1]: cryptsetup.target: Job
systemd-cryptsetup@swap.service/start deleted to break ordering cycle starting
with cryptsetup.target/start
. . . . . .
Apr 28 17:13:01 eu1 kernel: [ 5.361082] systemd[1]: Unnecessary job for
/dev/disk/by-id/nvme-SAMSUNG_MZVLB1T0HALR-00000_S3W6NX0M802914-part2 was removed
Also, /dev/mapper does not contain any swap devices:
root@eu1:/var/log# ls -l /dev/mapper
total 0
crw------- 1 root root 10, 236 Apr 28 17:13 control
root@eu1:/var/log#
And top shows no swap:
MiB Swap: 0.0 total, 0.0 free, 0.0 used. 63153.6 avail
Mem
** Affects: cryptsetup (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1875577
Title:
Encrypted swap won't load on 20.04 with zfs root
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