我有一个相对较新的 debian 安装，我在 /etc/hostname 中更改了主机名。它在启动过程中向我提供以下消息：
[ 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.
它一遍又一遍地执行此操作大约两个小时，然后才最终确定：
[ 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.
当我通过 SSH 登录并运行时sudo systemctl enable systemd-journald.service，我得到以下信息：
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.
我对此的经验很少systemd；是什么原因造成的以及如何修复它以正常启动？