systemd Journal Service tarda dos horas en iniciarse

systemd Journal Service tarda dos horas en iniciarse

Tengo una instalación de Debian relativamente nueva en la que cambié el nombre de host en /etc/hostname. Me da el siguiente mensaje durante el arranque:

[ 7406.882872] systemd[1]: Starting Journal Service...
[ 7406.920156] systemd-journald[2733]: File /run/log/journal/bfd65934be53484d980ccc7304e5fb23/system.journal corrupted or uncleanly shut down, renaming and replacing.
[ 7497.066194] systemd[1]: systemd-journald.service: Start operation timed out. Terminating.
[ 7587.320229] systemd[1]: systemd-journald.service: State 'stop-final-sigterm' timed out. Killing.
[ 7677.573560] systemd[1]: systemd-journald.service: Processes still around after final SIGKILL. Entering failed mode.
[ 7677.586742] systemd[1]: Failed to start Journal Service.
[ 7677.593748] systemd[1]: systemd-journald.service: Unit entered failed state.
[ 7677.601384] systemd[1]: systemd-journald.service: Failed with result 'timeout'.
[ 7677.625405] systemd[1]: systemd-journald.service: Service has no hold-off time, scheduling restart.
[ 7677.635948] systemd[1]: Stopped Journal Service.

Hace esto una y otra vez durante aproximadamente dos horas antes de finalmente decidirse por esto:

[ 7948.405911] systemd[1]: Starting Journal Service...
[ 7948.443473] systemd-journald[2746]: File /run/log/journal/bfd65934be53484d980ccc7304e5fb23/system.journal corrupted or uncleanly shut down, renaming and replacing.
[ 7948.516285] systemd[1]: Started Journal Service.

Cuando entro y ejecuto SSH sudo systemctl enable systemd-journald.service, obtengo lo siguiente:

sudo: unable to resolve host [hostname redacted]
The unit files have no installation config (WantedBy, RequiredBy, Also, Alias
settings in the [Install] section, and DefaultInstance for template units).
This means they are not meant to be enabled using systemctl.
Possible reasons for having this kind of units are:
1) A unit may be statically enabled by being symlinked from another unit's
   .wants/ or .requires/ directory.
2) A unit's purpose may be to act as a helper for some other unit which has
   a requirement dependency on it.
3) A unit may be started when needed via activation (socket, path, timer,
   D-Bus, udev, scripted systemctl call, ...).
4) In case of template units, the unit is meant to be enabled with some
   instance name specified.

Tengo muy poca experiencia con systemd; ¿Qué está causando esto y cómo puedo solucionarlo para que arranque normalmente?

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