Bug#758808: udev: time out issue after wheezy->jessie upgrade

[Michael Biebl]

Control: tags -1 moreinfo unreproducible

Hi

Am 02.03.2016 um 16:24 schrieb detbe:
> I upgraded a several machnies from wheezy to jessie. After the upgrade the first boot was successfull, but sometimes later the boot hangs on "A start job is running..".

Which job exactly was it waiting for? For how long?

Can you follow the instructions at [1] and enable a debug shell on tty9.
Boot with systemd.log_level=debug
switch to tty9, store the output of
systemctl list-jobs
and
journalctl -alb
and attach those files to the but report.


> I try to find what systemd processes running on infinite cycle. Found the systemd-udevd.service, systemd-udev-settle.service, lvm2-activation service. I suspected that the lvm2 service started before the udev process finish. I try to find the right bootup order to this services: systemd.udevd.service -> systemd-udev-settle.service -> lvm2-activation.service . Every process have to finish, before the next one started.
> Then i edit this services "Before=" lines to force the successfull exit before the next start.
> After many successful boot, finally i try to find out what the exactly missing option. (Only one needed)
> 
> Here is the diff: (working dir /lib/systemd/system/)
> 
> diff --git a/systemd-udevd.service b/systemd-udevd.service
> index 51497ce..eea7178 100644
> --- a/systemd-udevd.service
> +++ b/systemd-udevd.service
> @@ -11,7 +11,7 @@ Documentation=man:systemd-udevd.service(8) man:udev(7)
>  DefaultDependencies=no
>   Wants=systemd-udevd-control.socket systemd-udevd-kernel.socket
>    After=systemd-udevd-control.socket systemd-udevd-kernel.socket systemd-udev-hwdb-update.service systemd-sysusers.service
>    -Before=sysinit.target
>    +Before=sysinit.target systemd-udev-settle.service

That ordering should not be necessary.
systemd-udev-settle.service has After=systemd-udev-trigger.service which
has After=systemd-udevd-kernel.socket systemd-udevd-control.socket






[1] https://freedesktop.org/wiki/Software/systemd/Debugging/
-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: OpenPGP digital signature
URL: <http://lists.alioth.debian.org/pipermail/pkg-systemd-maintainers/attachments/20160302/962482fd/attachment.sig>