Am 03.03.2015 um 16:00 schrieb 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.
I did a couple more reboots and did indeed run into the problem, that systemd-sysctl.service was started after syslog.socket, so I got the "missed XXX messages" again. Adding the After=systemd-sysctl.service ordering to syslog.socket fixed that. In [1] you mentioned, that a sysctl snippet is no option. Can you elaborate why? I'd really like to avoid shipping an extra service for this. Since systemd-sysctl.service uses DefaultDependencies=no as well, it can run pretty early. Michael [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=762700#32 -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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