In case someone else steps in this; Frank Steiner wrote
> Hi, > > on one of my serves I have a LVM that, due to an error in my lvm.conf, > couldn't be mounted on boot. But I didn't get a maintenance shell as > I usually got on other servers, the output just stopped after complaining > with > [ TIME ] Timed out waiting for device > dev-mapper-exportraidcu...tcurry2.device. > [DEPEND] Dependency failed for /export. > [DEPEND] Dependency failed for Local File Systems. > ... > > So I debugged this and could grep the output from a serial console. > It seem that the rootfs vanishes at some point, because I see such > messages: > > About to execute: /bin/echo -e 'Welcome to emergency mode! After logging in, > type "journalctl -xb" to view\nsystem logs, "systemctl reboot" to reboot, > "systemctl default" to try again\nto boot into default mode.' > Forked /bin/echo as 4290 > Failed at step CHDIR spawning /bin/echo: No such file or directory > ... This didn't mean that /bin/echo was not found, but the CHDIR failed! That was caused by /root being a symbolic link to /local/home/root (we strictly separate any user data including root from the system, so that we can reformat / on reinstalling or upgrading the system). But /usr/lib/systemd/system/emergency.service contains: [Service] Environment=HOME=/root WorkingDirectory=/root ... and because /root was a link pointing to nowhere (/local is not mounted when starting the emergency service, only /) the chdir failed. I solved this buy changing the lines to Environment=HOME=/ WorkingDirectory=/ Although we could change /root to being an empty dir and using a bind mount, the links are safer at the moment due to several problems with bind mounts, including IBMs Tivoli not being able to handle them correctly. I don't think that having /root should be a mandatory requirement for starting an emergency shell, so maybe the service file should indeed be changed in the official release? cu, Frank -- Dipl.-Inform. Frank Steiner Web: http://www.bio.ifi.lmu.de/~steiner/ Lehrstuhl f. Bioinformatik Mail: http://www.bio.ifi.lmu.de/~steiner/m/ LMU, Amalienstr. 17 Phone: +49 89 2180-4049 80333 Muenchen, Germany Fax: +49 89 2180-99-4049 * Rekursion kann man erst verstehen, wenn man Rekursion verstanden hat. * _______________________________________________ systemd-devel mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/systemd-devel
