18.10.2015 18:16, Jan Alexander Steffens пишет:
On Sun, Oct 18, 2015 at 5:05 PM, Andrei Borzenkov <arvidj...@gmail.com> wrote:
What can be done to log from unit that needs to be started before journald?
Journal, syslog or kmsg all require journald connection and as far as I
understand will deadlock on waiting for journald to accept it. NULL is not
an option; is tty the only choice left?

Background - openSUSE tries to start haveged before journald to add
randomness.

This sounds like reincarnation of "how to log to syslog and be started
before syslogd". This was solved by moving logging connection to journald
and starting it very early. May be something like minilod or blogd that
buffers output until journald is started would be appropriate here?

You can log into the kernel's log buffer, see
https://www.kernel.org/doc/Documentation/ABI/testing/dev-kmsg

This means - explicit modification of program; because systemd kmsg works through journald.

Also won't this lose information about originator program and so there will be no way to filter journal by unit?
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