Control: retitle -1 systemd crashes on daemon-reexec when /run is full Am 03.01.2017 um 22:25 schrieb Zack Weinberg: > On Tue, Jan 3, 2017 at 3:55 PM, Michael Biebl <bi...@debian.org> wrote: >> Am 03.01.2017 um 21:41 schrieb Zack Weinberg: > >> Hm, yes. It looks like the system (or systemd specifically) was already >> in a bad state before the daemon-reexec and the crash/freeze was a >> result of that. > > Indeed. The problem was /run being full. Here is a reproduction recipe: > > # cat /dev/zero > /run/eatspace > cat: write error: No space left on device > # df -h | grep /run > tmpfs 128M 128M 0 100% /run > # apt-get install --reinstall systemd > Reading package lists... Done > Building dependency tree > Reading state information... Done > 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 3 not upgraded. > Need to get 0 B/2,453 kB of archives. > After this operation, 0 B of additional disk space will be used. > (Reading database ... 269661 files and directories currently installed.) > Preparing to unpack .../systemd_232-8_amd64.deb ... > Unpacking systemd (232-8) over (232-8) ... > Setting up systemd (232-8) ... > addgroup: The group `systemd-journal' already exists as a system group. > Exiting. > > Broadcast message from systemd-journald@kenaz (Tue 2017-01-03 16:16:42 EST): > > systemd[1]: Freezing execution. > > > Message from syslogd@kenaz at Jan 3 16:16:42 ... > systemd[1]: Freezing execution. > Failed to try-restart systemd-networkd.service: Connection timed out > See system logs and 'systemctl status systemd-networkd.service' for details. > Failed to try-restart systemd-resolved.service: Connection timed out > See system logs and 'systemctl status systemd-resolved.service' for details. > Failed to try-restart systemd-timesyncd.service: Connection timed out > See system logs and 'systemctl status systemd-timesyncd.service' for details. > Processing triggers for man-db (2.7.6.1-2) ... > Processing triggers for dbus (1.10.14-1) ... > Error: Timeout was reached > > And I get the same "Failed to serialize state: Input/output error" in > the logs. There is no /core file produced, though. > > I don't know *why* /run was full originally, since it gets cleared on > reboot, but at a minimum I suggest that systemd.preinst should abort > the upgrade if /run is full.
Aha, thanks a lot for the reproducer. This helps a lot! Will forward this issue upstream. daemon-reexec should handle the case of a full /run more gracefully. Regards, Michael -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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