[lxc-users] zombie process blocks stopping of container

[Stéphane Graber]

On Tue, Jun 03, 2014 at 04:56:03PM +0200, Tamas Papp wrote:
> 
> On 06/03/2014 04:50 PM, Stéphane Graber wrote:
> >lxc-stop will send SIGPWR (or the equivalent signal) to the container,
> >wait 30s then SIGKILL init. lxc-stop -k will skip the SIGPWR step,
> >lxc-stop --nokill will skip the SIGKILL step.
> >
> >It's pretty odd that init after a kill -9 is still marked running... I'd
> >have expected it to either go away or get stuck in D state if
> >something's really wrong...
> >
> >Do you see anything relevant in the kernel log?
> 
> Nothing. I was in hurry, so I restarted the whole machine, I cannot
> collect more information.
> Unfortunately I'm pretty sure it will be back soon, since this was
> not the first time.
> What do you suggest, what should I check, when I face it again?

So my hope would be for the kernel to report the task as hung which
causes a stacktrace to be dumped in dmesg. If not, then it's going to be
a bit harder to figure it out...

-- 
Stéphane Graber
Ubuntu developer
http://www.ubuntu.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: Digital signature
URL: <http://lists.linuxcontainers.org/pipermail/lxc-users/attachments/20140603/12bcb85c/attachment.sig>