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Bug 1471803

Summary: oci-kvm-hook Doesn't work on RHEL7 docker
Product: Red Hat Enterprise Linux 7 Reporter: Daniel Walsh <dwalsh>
Component: dockerAssignee: Frantisek Kluknavsky <fkluknav>
Status: CLOSED ERRATA QA Contact: atomic-bugs <atomic-bugs>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.4CC: amurdaca, fdeutsch, lsm5, lsu, stefw
Target Milestone: rcKeywords: Extras
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1472815 1472848 (view as bug list) Environment:
Last Closed: 2017-08-02 00:13:50 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:
Embargoed:
Bug Depends On:    
Bug Blocks: 1472848    

Description Daniel Walsh 2017-07-17 13:20:37 UTC 
This issue was reported here by Stef Walters.
https://github.com/stefwalter/oci-kvm-hook/issues/3

Need three back ports for docker-runc to make this work correctly.
Comment 2 Daniel Walsh 2017-07-17 13:23:19 UTC 
Alright, I figured this out. Turns out we needed to backport a patch to make it possible for prestart hooks to edit cgroup stuff. Patches for 1.12.6, 1.13.1 and 1.13.1-rhel are here:

projectatomic/runc@79c3939
projectatomic/runc@d90fcb7
projectatomic/runc@79db05f

Original patch: opencontainers/runc#1239

https://github.com/projectatomic/runc/commit/79c3939053c870fbb4de5484d98640d5ba028ef4

https://github.com/projectatomic/runc/commit/d90fcb78c3886d01d48829a11fb481af5db08372

https://github.com/projectatomic/runc/commit/79db05ff0192bae1d0e505b93c5ac28818beb441
Comment 5 Luwen Su 2017-07-25 04:27:22 UTC 
For now
# docker run -it timesu/test-kvm /bin/bash

//docker-1.12.6-48.git0fdc778.el7.x86_64

#ls -l /sys/fs/cgroup/devices/system.slice/docker-45da3109bf49026fa288603c1c1d9c762150de9fc9fce34a89eb60ff4f70bc23.scope/
total 0
-rw-r--r--. 1 root root 0 Jul 25 12:18 cgroup.clone_children
--w--w--w-. 1 root root 0 Jul 25 12:18 cgroup.event_control
-rw-r--r--. 1 root root 0 Jul 25 12:18 cgroup.procs
--w-------. 1 root root 0 Jul 25 12:18 devices.allow
--w-------. 1 root root 0 Jul 25 12:18 devices.deny
-r--r--r--. 1 root root 0 Jul 25 12:18 devices.list
-rw-r--r--. 1 root root 0 Jul 25 12:18 notify_on_release
-rw-r--r--. 1 root root 0 Jul 25 12:18 tasks

compared with before
https://github.com/stefwalter/oci-kvm-hook/issues/3
-rw-r--r--. 1 root root 0 Jul 14 14:09 cgroup.clone_children
                                                          -rw-r--r--. 1 root root 0 Jul 14 14:09 cgroup.procs
                                                          --w-------. 1 root root 0 Jul 14 14:09 devices.allow
                                                          --w-------. 1 root root 0 Jul 14 14:09 devices.deny
                                                          -r--r--r--. 1 root root 0 Jul 14 14:09 devices.list
                                                          -rw-r--r--. 1 root root 0 Jul 14 14:09 notify_on_release
                                                          -rw-r--r--. 1 root root 0 Jul 14 14:09 tasks
Comment 7 errata-xmlrpc 2017-08-02 00:13:50 UTC 
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://access.redhat.com/errata/RHBA-2017:2344