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DescriptionLokesh Mandvekar
2016-03-15 17:21:32 UTC
+++ This bug was initially created as a clone of Bug #1317059 +++
Description of problem:
Errors such as
System error: open /sys/fs/cgroup/devices/system.slice/docker-fc2e8c0bfdef0d585ed13e784ccc1024ec33f4f01e3c4c992ea15b38abca58b7.scope/cgroup.procs: no such file or directory
are seen during origin tests.
For more info see https://github.com/openshift/origin/issues/7927
Version-Release number of selected component (if applicable):
docker 1.9.1
How reproducible:
Seen during jenkins tests
Actual results:
docker build failure
Expected results:
docker build shouldn't fail with this cgroups error
Additional info:
This seems like a probable race of some kind with systemd cgroups support.
The code that is failing does the following:
1. Creates a systemd transient unit for e.g. /system.slice/docker-fc2e8c0bfdef0d585ed13e784ccc1024ec33f4f01e3c4c992ea15b38abca58b7.scope
2. Join the device cgroup manually by creating the device directory
at sys/fs/cgroup/devices/system.slice/docker-fc2e8c0bfdef0d585ed13e784ccc1024ec33f4f01e3c4c992ea15b38abca58b7.scope
3. Write the pid of the container process to
/sys/fs/cgroup/devices/system.slice/docker-fc2e8c0bfdef0d585ed13e784ccc1024ec33f4f01e3c4c992ea15b38abca58b7.scope/cgroup.procs (creating the file as well)
--- Additional comment from Clayton Coleman on 2016-03-15 09:25:10 CDT ---
This blocks the OpenShift 3.2 release, given that it results in failures in roughly 1% of container launches on Docker 1.9 on RHEL.
--- Additional comment from Mrunal Patel on 2016-03-15 12:17:34 CDT ---
https://github.com/projectatomic/docker/pull/76 is a potential fix that we need a rpm for.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2016-0536.html