Docker looks up in wrong directory for cgroups settings

[ashishbista]

I'm trying to limit the memory size for containers. I'm running Docker with exec-driver lxc. It looks like Docker is looking in the wrong directory for cgroups settings.

Docker: sudo docker -d -e lxc

docker version:

Client version: 1.7.1
Client API version: 1.19
Go version (client): go1.4.2
Git commit (client): 786b29d
OS/Arch (client): linux/amd64
Server version: 1.7.1
Server API version: 1.19
Go version (server): go1.4.2
Git commit (server): 786b29d
OS/Arch (server): linux/amd64

docker info:

Containers: 22
Images: 53
Storage Driver: aufs
 Root Dir: /var/lib/docker/aufs
 Backing Filesystem: extfs
 Dirs: 98
 Dirperm1 Supported: false
Execution Driver: lxc-1.0.7
Logging Driver: json-file
Kernel Version: 3.13.0-59-generic
Operating System: Ubuntu 14.04.2 LTS
CPUs: 4
Total Memory: 7.447 GiB
Name: poisonta
ID: X2NK:ZIP4:TOIC:BDAR:ZEFE:ROE6:NQ3X:H2SJ:RYPQ:YCLG:KEYU:7X2Z

uname -a:

Linux poisonta 3.13.0-59-generic #98-Ubuntu SMP Fri Jul 24 21:05:26 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Server Type: Physical

Command used to create a container: sudo docker run --lxc-conf="memory.limit_in_bytes = 10000" -i -t ubuntu_trusty /bin/bash

Log:

WARN[0275] Your kernel does not support OOM notifications: open /sys/fs/cgroup/memory/user/1000.user/c2.session/lxc/0ef985ea04fc85871f4f77b19250371523274cef43ce813e986cf24770e4d6e4/memory.oom_control: no such file or directory 
INFO[0275] POST /v1.19/containers/0ef985ea04fc85871f4f77b19250371523274cef43ce813e986cf24770e4d6e4/resize?h=50&w=186 
ERRO[0275] Handler for POST /containers/{name:.*}/resize returned error: Cannot resize container 0ef985ea04fc85871f4f77b19250371523274cef43ce813e986cf24770e4d6e4, container is not running 
ERRO[0275] HTTP Error                                    err=Cannot resize container 0ef985ea04fc85871f4f77b19250371523274cef43ce813e986cf24770e4d6e4, container is not running statusCode=500

Steps to reproduce the issue:

1. Run Docker daemon: sudo docker -d -e lxc
2. Create container: sudo docker run --lxc-conf="memory.limit_in_bytes = 10000" -i -t ubuntu_trusty /bin/bash

[thaJeztah]

ping @ashahab-altiscale is this your area, or should I ping someone else? :-)

[optimisticanshul]

@ashishbista can you try sudo docker run --lxc-conf="lxc.cgroup.memory.limit_in_bytes=1000" -i -t ubuntu_trusty /bin/bash

lxc.cgroup.memory.limit_in_bytes = 2560M

[ashishbista]

@justanshulsharma The command worked and created a container but, I doubt it actually limited the memory for the container.

$ sudo docker run --lxc-conf="lxc.cgroup.memory.limit_in_bytes = 2560M" -i -t ubuntu_trusty /bin/bash
root@e323f2a834e3:/# free -m
             total       used       free     shared    buffers     cached
Mem:          7626       5542       2083        444        861       1880
-/+ buffers/cache:       2800       4825
Swap:         8446          0       8446

[ashishbista]

Never mind, I read the doc and understand why it is showing up the details of host machine.