[lxc-users] container stuck until lxcfs restart

[Fajar A. Nugraha]

On Tue, Mar 24, 2015 at 5:52 AM, Norberto Bensa
<nbensa+lxcusers at gmail.com> wrote:
> Hello,
>
> from time to tome, I think once per day, my containers get stuck. I found
> that `service lxcfs restart` restores functionality.
>
> Is this a know bug?
>
> ii  liblxc1                                               1.1.0-0ubuntu1
> amd64        Linux Containers userspace tools (library)
> ii  lxc                                                   1.1.0-0ubuntu1
> amd64        Linux Containers userspace tools
> ii  lxc-templates                                         1.1.0-0ubuntu1
> amd64        Linux Containers userspace tools (templates)
> ii  lxcfs                                                 0.6-0ubuntu2
> amd64        FUSE based filesystem for LXC
> ii  python3-lxc                                           1.1.0-0ubuntu1
> amd64        Linux Containers userspace tools (Python 3.x bindings)


I had some problems with simple test of several cycles start-stop a
vivid container. Similar to your experience, restarting lxcfs solves
the problem. Serge suggested running lxcfs under gdb and try to find
out what's wrong when the problem occur. I haven't had time to do so
though, since debugging with gdb can be somewhat complicated.

If you're just a "normal" non-developer user, and using it for
"production" use, then my best advice for now is "stop lxcfs, don't
use any systemd-based containers". upstart/sysvinit-based containers
will work even without lxcfs.

If you're a developer, then compiling lxcfs with debugging info, and
poking around with gdb when the problem occurs might help.

-- 
Fajar