[bug] pouch stop print ERRO msg

[Letty5411]

Issue Description
CMD "pouch stop $container", prints ERRO msg as following:

ERRO[3464] stat cgroup 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300  error=""/sys/fs/cgroup/cpuacct/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300/cpuacct.stat" is expected to have 4 fields"*

Describe what happened:

Describe what you expected to happen:

How to reproduce it (as minimally and precisely as possible):

#./pouch create reg.docker.alibaba-inc.com/base/busybox:latest ls /tmp
INFO[2017-11-14 18:31:09.027715378] Calling POST /containers/create, client @
container's id: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300, name: 4d27d1

#./pouch start 4d27d1
INFO[2017-11-14 18:31:18.145500039] Calling POST /containers/4d27d1/start, client @
INFO[2017-11-14 18:31:18.145910238] start to subscribe io, backend: raw-file, id: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
INFO[2017-11-14 18:31:18.146477492] success to get image: reg.docker.alibaba-inc.com/base/busybox:latest, container id: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
INFO[2017-11-14 18:31:18.333516402] success to new container: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
INFO[3382] shim containerd-shim started                  address="/containerd-shim/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300/shim.sock" debug=false module="containerd/tasks" pid=94331
INFO[2017-11-14 18:31:18.427115147] success to new task, container id: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300, pid: 94354
INFO[2017-11-14 18:31:18.444445342] success to start task, container id: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
INFO[2017-11-14 18:31:18.444479200] success to add container, id: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300

#find /sys/fs/cgroup/ -name 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300*
/sys/fs/cgroup/hugetlb/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
/sys/fs/cgroup/freezer/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
/sys/fs/cgroup/blkio/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
/sys/fs/cgroup/net_cls/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
/sys/fs/cgroup/memory/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
/sys/fs/cgroup/perf_event/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
/sys/fs/cgroup/devices/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
/sys/fs/cgroup/cpuset,cpu,cpuacct/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
/sys/fs/cgroup/systemd/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300

#cat /sys/fs/cgroup/cpuset,cpu,cpuacct/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300/cpuset.cpus
0-23

#./pouch stop 4d27d1
INFO[2017-11-14 18:32:34.802486593] Calling POST /containers/4d27d1/stop, client @
INFO[2017-11-14 18:32:39.838560033] the task has quit, id: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300, err: <nil>, exitcode: 137, time: 2017-11-14 10:32:39.838088813 +0000 UTC
**ERRO[3464] stat cgroup 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300  error=""/sys/fs/cgroup/cpuacct/default/4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300/cpuacct.stat" is expected to have 4 fields"**
INFO[3464] shim reaped                                   id=4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300 module="containerd/tasks"
INFO[2017-11-14 18:32:40.000468282] close containerio backend: raw-file, id: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
INFO[2017-11-14 18:32:40.000501512] close containerio backend: raw-file, id: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
INFO[2017-11-14 18:32:40.000567380] finished to subscribe io, backend: raw-file, id: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
INFO[2017-11-14 18:32:40.052767852] success to destroy container: 4d27d1f95287ce83f2f08dd916602f25d40e2b685ec54011b5352fb8faedf300
INFO[2017-11-14 18:32:40.052802535] End of Calling POST /containers/4d27d1/stop, costs 5250 ms. client @

Anything else we need to know?:

Environment:

• pouch version (use pouch version):
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

[allencloud]

I think this is related to your system from my initial view.

Can you reproduce this in the newest master branch of Pouch? @Letty5411
If that, we should promote the priority of this.

[Letty5411]

I didn't see this error these days.