[systemd-bugs] [Bug 81628] New: systemd-networkd: hang writing journal entry (v215)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81628

          Priority: medium
            Bug ID: 81628
          Assignee: systemd-bugs at lists.freedesktop.org
           Summary: systemd-networkd: hang writing journal entry (v215)
        QA Contact: systemd-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: brandon at ifup.co
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: general
           Product: systemd

We have a service that writes to the systemd socket using
github.com/coreos/go-systemd. With systemd 215 we have noticed that on some
boots the process will hang trying to write to the socket. At around the same
time that this process is starting journald is doing a compaction.

I will try and gather more details; it is a very easy thing to reproduce.

Jul 22 02:31:22 localhost systemd-journal[87]: Runtime journal is using 6.2M
(max allowed 49.9M, trying to leave 74.8M free of 492.8M available → current
limit 49.9M).
Jul 22 02:31:22 localhost systemd-journal[87]: Runtime journal is using 6.2M
(max allowed 49.9M, trying to leave 74.8M free of 492.8M available → current
limit 49.9M).
Jul 22 02:31:22 localhost systemd-journal[87]: Journal started
Jul 22 02:31:22 localhost systemd-journal[87]: Missed 73 kernel messages
Jul 22 02:31:22 localhost systemd-journal[87]: Missed 0 kernel messages
Jul 22 02:31:22 localhost systemd-journal[87]: Missed 5 kernel messages
Jul 22 02:31:22 localhost systemd-journal[87]: Missed 0 kernel messages
Jul 22 02:31:23 localhost systemd-journal[87]: Missed 0 kernel messages
Jul 22 02:31:23 localhost systemd-journal[87]: Missed 7 kernel messages
Jul 22 02:31:23 localhost systemd-journal[87]: Missed 1 kernel messages
Jul 22 02:31:23 localhost systemd-journal[87]: Missed 1 kernel messages
Jul 22 02:31:24 localhost systemd-journal[87]: Missed 11 kernel messages
Jul 22 02:31:24 core-03 systemd-journal[369]: Runtime journal is using 6.2M
(max allowed 49.9M, trying to leave 74.8M free of 486.6M available → current
limit 49.9M).
Jul 22 02:31:24 core-03 systemd-journal[369]: Runtime journal is using 6.2M
(max allowed 49.9M, trying to leave 74.8M free of 486.6M available → current
limit 49.9M).
Jul 22 02:31:24 core-03 systemd-journal[369]: Journal started
Jul 22 02:31:25 core-03 systemd-journal[369]: Permanent journal is using 24.0M
(max allowed 1.6G, trying to leave 2.4G free of 15.7G available → current limit
1.6G).
Jul 22 02:31:25 core-03 systemd-journal[369]: Time spent on flushing to /var is
379.365ms for 820 entries.

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