Bug#762700: systemd: journald fails to forward most boot messages to syslog

[Michael Biebl]

Am 03.03.2015 um 15:33 schrieb Michael Biebl:
> Am 02.03.2015 um 15:42 schrieb Christian Seiler:
> 
>>  - SOLUTION (mostly the same as before, but SendBuffer is set on a
>>    different unit and a Condition is added to the service):
>>
>>       1. Increase max_dgram_qlen to a reasonable value. The easiest
>>          way is via a systemd service:
>>
>>          /lib/systemd/system/systemd-setup-dgram-qlen.service:
>>          [Unit]
>>          DefaultDependencies=no
>>          Before=syslog.socket
>>          ConditionPathIsReadWrite=/proc/sys/net/unix/max_dgram_qlen
>>
>>          [Service]
>>          Type=oneshot
>>          ExecStart=/sbin/sysctl -w net.unix.max_dgram_qlen=512
>>          StandardOutput=null
> 
> A proper Description= is missing and it probably should have
> RemainAfterExit=yes.
> That said, why not simply use a sysctl.d conf snippet?


I just tried the following:
# cat /usr/lib/sysctl.d/50-qlen.conf
net.unix.max_dgram_qlen=512

and adding "RequiresMountsFor=/usr/lib/sysctl.d/" to
systemd-sysctl.service (a change we should apply independently of this
issue, given that we won't get the usr-mount patches for initramfs-tools
in jessie).

This seems to be sufficient to get rid of the "Forwarding to syslog
missed XXX messages."

>>          Add the following to /lib/systemd/systemd/syslog.socket:
>>          Wants=systemd-setup-dgram-qlen.service

I didn't add an explicit Ordering to syslog.socket
(After=systemd-sysctl.service). Will need to check if I was just lucky
and without that it would be racy, or if the ordering is already correct.


-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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