Re: Non responsive state for systemd

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On 03/04/2013 07:05 PM, Lennart Poettering wrote:
On Mon, 04.03.13 10:24, David Highley (dhighley@xxxxxxxxxxxxxxxxxxxxxxx) wrote:

"Lennart Poettering wrote:"
On Mon, 04.03.13 07:56, David Highley (dhighley@xxxxxxxxxxxxxxxxxxxxxxx) wrote:

Twice now we have one Fedora 18 system where systemd seems to get into a
non responsive state. We are not able to get the status of any service
and we're not able to do an init 6 to restart the system.

Did notice today that a full process list showed a message about abrt
and something to the effect "nobody cared". We also see a number of
defunct processes that seem to never clear. So far the only remedy we
have found is a hard power cycle.
Can you get a stack trace of PID1? "sudo pstack 1" should already give a
hint, but even better would be a a "bt full" via gdb.
We are offsite right now so will dig deeper later. We had checked the
log files and noticed that it complains about rsyncd not being able to
connect to a port and there was another complaint about Gnome. The
rsync one repeats as there are back ups that are not being serviced
which is is what alerted to something being wrong. We are sending and
receiving email from this system. It also has an internal web, mysql,
and other subsystems which seem to work fine. So when this state occurs
it sometimes takes a while to notice.
This is a bug in libselinux:

https://bugzilla.redhat.com/show_bug.cgi?id=901812
This is exact reason you don't make the most important user space program dependent on a lot of other stuff!

Lennart



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