[Bug 1937238] Re: systemd-time-wait-sync.service stuck in "activating" state after boot, blocks timers from starting

[Rasmus Bondesson]

My problem looks similar to the on reported in the Home Assistant bug
tracker.


raek at mizar:~$ systemctl status systemd-time-wait-sync                                                                                                                 
... *SNIP* ...
             └─508 /lib/systemd/systemd-time-wait-sync                                                                                                                


raek at mizar:~$ sudo lsof -nPp 508
COMMAND   PID USER   FD      TYPE             DEVICE SIZE/OFF    NODE NAME
... *SNIP* ...
systemd-t 508 root    0r      CHR                1,3      0t0       6 /dev/null
systemd-t 508 root    1u     unix 0xffff99d964ad0c00      0t0   16894 type=STREAM
systemd-t 508 root    2u     unix 0xffff99d964ad0c00      0t0   16894 type=STREAM
systemd-t 508 root    3u  a_inode               0,14        0   11428 [eventpoll]
systemd-t 508 root    4u  a_inode               0,14        0   11428 [signalfd]
systemd-t 508 root    5r  a_inode               0,14        0   11428 inotify
systemd-t 508 root    6u  a_inode               0,14        0   11428 [timerfd]


raek at mizar:~$ sudo strace -ttTp 508
strace: Process 508 attached
22:59:52.923972 gettid()                = 508 <0.000023>
22:59:52.925523 epoll_wait(3, 


raek at mizar:~$ sudo cat /proc/508/fdinfo/5
pos:    0
flags:  02004000
mnt_id: 15
inotify wd:1 ino:17b sdev:18 mask:100 ignored_mask:0 fhandle-bytes:8 fhandle-type:1 f_handle:ac95aa8d7b010000


raek at mizar:~$ sudo cat /proc/508/mountinfo  | grep :15
39 34 0:33 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,memory


The mountinfo lines look different for me than for tmm1 (see previously
linked home assistant ticket).

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https://bugs.launchpad.net/bugs/1937238

Title:
  systemd-time-wait-sync.service stuck in "activating" state after boot,
  blocks timers from starting

Status in systemd package in Ubuntu:
  Incomplete

Bug description:
  When I start my server running Ubuntu 20.04 the systemd-time-wait-
  sync.service is stuck in "activating" state. I noticed this because
  none of the systemd timer units triggered, because all the timers
  depend on systemd-time-wait-sync.service. Running "systemctl restart
  systemd-time-wait-sync.service" manually works around the problem.

  Some logs and command outputs:

  raek at mizar:~$ lsb_release -rd
  Description:    Ubuntu 20.04.2 LTS
  Release:        20.04

  raek at mizar:~$ systemctl | grep systemd-time-wait-sync.service
    systemd-time-wait-sync.service                                                               loaded activating start     start Wait Until Kernel Time Synchronized

  raek at mizar:~$ systemctl status systemd-time-wait-sync.service
  ● systemd-time-wait-sync.service - Wait Until Kernel Time Synchronized
       Loaded: loaded (/lib/systemd/system/systemd-time-wait-sync.service; enabled; vendor preset: enabled)
       Active: activating (start) since Thu 2021-07-22 11:06:52 CEST; 27min ago
         Docs: man:systemd-time-wait-sync.service(8)
     Main PID: 514 (systemd-time-wa)
        Tasks: 1 (limit: 9415)
       Memory: 972.0K
       CGroup: /system.slice/systemd-time-wait-sync.service
               └─514 /lib/systemd/systemd-time-wait-sync

  Jul 22 11:06:52 mizar systemd-time-wait-sync[514]: adjtime state 5 status 40 time Thu 2021-07-22 09:06:52.216338 UTC
  Warning: journal has been rotated since unit was started, output may be incomplete.

  raek at mizar:~$ journalctl -b -u systemd-time-wait-sync.service
  -- Logs begin at Wed 2020-07-08 16:34:13 CEST, end at Thu 2021-07-22 11:36:44 CEST. --
  Jul 22 11:06:52 mizar systemd-time-wait-sync[514]: adjtime state 5 status 40 time Thu 2021-07-22 09:06:52.216338 UTC

  raek at mizar:~$ dpkg -S /lib/systemd/system/systemd-time-wait-sync.service
  systemd: /lib/systemd/system/systemd-time-wait-sync.service

  raek at mizar:~$ apt-cache policy systemd
  systemd:
    Installed: 245.4-4ubuntu3.11
    Candidate: 245.4-4ubuntu3.11
    Version table:
   *** 245.4-4ubuntu3.11 500
          500 http://se.archive.ubuntu.com/ubuntu focal-security/main amd64 Packages
          100 /var/lib/dpkg/status
       245.4-4ubuntu3.10 500
          500 http://se.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
       245.4-4ubuntu3.8 400
          400 http://archive.ubuntu.com/ubuntu focal-proposed/main amd64 Packages
       245.4-4ubuntu3 500
          500 http://se.archive.ubuntu.com/ubuntu focal/main amd64 Packages

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