[lxc-users] Kernel lockups when running lxc-start (J?kel)

[Serge Hallyn]

So does the same thing happen if you don't have the
/var/lib/lxc/container bind mount, and instead do

lxc-start -P /desk1 -n container

?

does 'grep shared /proc/self/mountinfo' show anything?

Quoting Dao Quang Minh (dqminh89 at gmail.com):
> Hi,
> 
> We run a ( sort of ) unconventional FS layout with aufs.
> 
>                       bind-mount                    aufs
> /var/lib/lxc/container <------- /disk1/container<----+----+ base
>                                                      |
>                                                      +----+ delta
> 
> The container is then started as usual with lxc-start. `/disk1` and
> `/var/lib/lxc` are ext4 disks.
> 
> Daniel.
> 
> >Dear Daniel,
> >
> >may you please add some information about the type and layout of filesystems involved to get an idea what kind of mount operations are involved. I guess it's some bug in the FS layer while LXC doing the mounts.
> >
> >thank you
> >
> >Guido
> >
> >>-----Original Message-----
> >>From: lxc-users-bounces at lists.linuxcontainers.org [mailto:lxc-users-bounces at lists.linuxcontainers.org] On Behalf Of Dao
> >>Quang Minh
> >>Sent: Wednesday, March 12, 2014 9:03 AM
> >>To: lxc-users at lists.linuxcontainers.org
> >>Subject: [lxc-users] Kernel lockups when running lxc-start
> >>
> >>Hi all,
> >>
> >>We encounter a bug today when one of our systems enter soft-lockup when we try to start a container. Unfortunately at that
> >>point, we have to do a power cycle because we can’t access the system anymore. Here is the kernel.log:
> >>
> >>[...]
> >>
> >>After this point, it seems that all lxc-start will fail,but the system continues to run until we power-cycled it.
> >>
> >>When i inspected some of the containers that were started during that time, i saw that one of them has an existing
> >>lxc_putold directory ( which should be removed when the container finished starting up right ? ). However, i'm not sure if that
> >>is related to the lockup above.
> >>
> >>The host is running on a 12.04 ec2 server, with lxc 1.0.0 and kernel 3.13.0-12.32
> >>
> >>Cheers,
> >>Daniel.

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