systemd target multi-user.target 失敗，但如何知道原因？

Question

如何診斷這種非活動狀態的原因？

# systemctl --type=target --no-pager
UNIT                   LOAD   ACTIVE   SUB    JOB   DESCRIPTION
basic.target           loaded active   active       Basic System
cryptsetup.target      loaded active   active       Local Encrypted Volumes
getty.target           loaded active   active       Login Prompts
local-fs-pre.target    loaded active   active       Local File Systems (Pre)
local-fs.target        loaded active   active       Local File Systems
multi-user.target      loaded inactive dead   start Multi-User System
network-online.target  loaded active   active       Network is Online
network.target         loaded active   active       Network
nss-user-lookup.target loaded active   active       User and Group Name Lookups
...

Answer 1

還沒失敗然而– 「JOB」欄位表示仍有一個「啟動」作業待處理。檢查還有哪些單元正在等待啟動：

systemctl list-jobs