udevadm[4193]: systemd-udev-settle.service is deprecated. Please fix zfs-load-module.service, zfs-import-cache.service not to pull it in.

[Bartosz Woronicz]

After recent update my Jammy ZFS based distro goes into emergency mode

It waits till timeout 3 minutes for systemd-udev-settle

I see the following message
Aug 24 10:46:28 drakkar udevadm[4193]: systemd-udev-settle.service is deprecated. Please fix zfs-load-module.service, zfs-import-cache.service not to pull it in.

I need restart the service manually

  systemctl restart systemd-udev-settle
  systemctl restart zfs-load-module
  systemctl restart zfs-import-cache
  exit

and exit emergency shell so the system can start normally to the default target

I guess solution would be to remove that dependency, but maybe I am wrong

For instance

  mkdir /etc/systemd/system/zfs-load-module.service.d
  mkdir /etc/systemd/system/zfs-import-cache.service.d
  echo -e "[Unit]\nRequires=" > /etc/systemd/system/zfs-load-module.service.d/override.conf
  echo -e "[Unit]\nRequires=" /etc/systemd/system/zfs-import-cache.service.d/override.conf
  systemctl daemon-reload

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: zfsutils-linux 2.1.5-1ubuntu6~22.04.1
ProcVersionSignature: Ubuntu 6.2.0-26.26~22.04.1-generic 6.2.13
Uname: Linux 6.2.0-26-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu Aug 24 13:06:52 2023
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: zfs-linux
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.logrotate.d.apport: 2023-08-24T03:09:53.125138

[Bartosz Woronicz (mastier1)]

Ok, so I used udev.log-priority=info and udev.max-children=2 to see what fails here
annd the culprit seems some of my zfs datasets.

Yet, the deprecation should be fixed.

Will check more later on.