Bug 1317059

Summary:	cgroups: cgroups.proc no such file or directory error during docker build
Product:	[Fedora] Fedora	Reporter:	Mrunal Patel <mpatel>
Component:	docker	Assignee:	Mrunal Patel <mpatel>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	23	CC:	adimania, admiller, amurdaca, ccoleman, dwalsh, ichavero, jcajka, jchaloup, lnykryn, lsm5, marianne, miminar, systemd-maint, vbatts
Target Milestone:	---
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Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	1317991 (view as bug list)		Environment:
Last Closed:	2016-08-19 20:46:36 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description Mrunal Patel 2016-03-11 20:27:18 UTC

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)

Comment 1 Clayton Coleman 2016-03-15 14:25:10 UTC

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.

Comment 2 Mrunal Patel 2016-03-15 17:17:34 UTC

https://github.com/projectatomic/docker/pull/76 is a potential fix that we need a rpm for.

Comment 3 Daniel Walsh 2016-06-03 18:56:50 UTC

Mrunal can I close this, Do we have this in docker-1.9?