[lxc-users] LXCFS install issue

[Stéphane Graber]

On Fri, Apr 24, 2015 at 07:30:00PM -0500, Rajasekar Darapuram wrote:
> Hi
> When I add ppa:ubuntu-lxc/daily repo and do an apt-get install lxcfs (and
> lxc, cgmanager) LXCFS is working fine inside containers. But the apt-get
> downloads the latest deb everyday..TO be consistent for all developers I
> downloaded the debs and wrote a script to upgrade LXC 1.10 to LXC 1.1. and
> LXCFS.   It installs the new versions of LXC and LXCFS. I was able to
> create containers and start the,. However when I attach to the container
> and run ps command I get this error (if I stop lxcfs service, then ps is
> working fine inside the containers)
> 
> root at eqx03-flash04:/etc# lxc-ls -f
> NAME                            STATE    IPV4  IPV6  GROUPS  AUTOSTART
> ----------------------------------------------------------------------
> eqx03-vnode18 <http://eqx03-vnode18.robinsystems.com> STOPPED  -     -
> -       NO
> eqx03-vnode52 <http://eqx03-vnode52.robinsystems.com> STOPPED  -     -
> -       NO
> root at eqx03-flash04:/etc# lxc-start -n eqx03-vnode18
> <http://eqx03-vnode18.robinsystems.com>
> root at eqx03-flash04:/etc# lxc-ls -f
> NAME                            STATE    IPV4         IPV6  GROUPS
>  AUTOSTART
> -----------------------------------------------------------------------------
> eqx03-vnode18 <http://eqx03-vnode18.robinsystems.com>  RUNNING  10.9.240.18
>  -     -       NO
> eqx03-vnode52 <http://eqx03-vnode52.robinsystems.com>  STOPPED  -
>  -     -       NO
> root at eqx03-flash04:/etc# service lxcfs status
> lxcfs start/running, process 22159
> 
> root at eqx03-flash04:/etc# ls /var/lib/lxcfs
> cgroup  proc
> root at eqx03-flash04:/etc#
> root at eqx03-flash04:/etc# lxc-attach -n eqx03-vnode18
> <http://eqx03-vnode18.robinsystems.com>
> *root at eqx03-vnode18:/etc# ps*
> *Error: /proc must be mounted*
> *  To mount /proc at boot you need an /etc/fstab line like:*
> *      proc   /proc   proc    defaults*
> *  In the meantime, run "mount proc /proc -t proc"*
> 
> 
> Also sometimes lxcfs service is getting killed and when I do an ls on
> /var/lib/lxcfs, I get this error
> transport endpoint is not connected
> 
> Please let me know.
> 
> Thanks
> Raj

It's unfortunately a known issue with lxcfs (and one that is based on a
kernel limitation so unlikely to be resolved very soon).

Restarting lxcfs (by an update or a crash) causes any container using it
to return empty files instead of the lxcfs files.

The only fix for this issue is to restart all your containers whenever
lxcfs is restarted.

-- 
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/20150424/879bbfa1/attachment.sig>