without lxc.kmsg = 0 in the /etc/lxc/lxc.conf, systemd's journalctl consumes 100% cpu when containers are started.
"By default lxc symlinks /dev/kmsg to /dev/console, this leads to journald running 100% cpu usage all the time."
(lxc.kmsg = 0 actually needs to go into each lxc container config... I assume putting it in /etc/lxc/lxc.conf will make that happen? I need to test this)
I think this bug is a duplicate of bug 1141456. The issue is fixed in upstream commit e8a16654.
lxc-1.0.7-4.fc21 has been submitted as an update to Fedora 21. https://bodhi.fedoraproject.org/updates/FEDORA-2015-ebfe46536f
lxc-1.0.7-4.fc21 has been pushed to the Fedora 21 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
$ su -c 'dnf --enablerepo=updates-testing update lxc'
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2015-ebfe46536f
This message is a reminder that Fedora 21 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 21. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora 'version'
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version'
to a later Fedora version.
Thank you for reporting this issue and we are sorry that we were not
able to fix it before Fedora 21 is end of life. If you would still like
to see this bug fixed and are able to reproduce it against a later version
of Fedora, you are encouraged change the 'version' to a later Fedora
version prior this bug is closed as described in the policy above.
Although we aim to fix as many bugs as possible during every release's
lifetime, sometimes those efforts are overtaken by events. Often a
more recent Fedora release includes newer upstream software that fixes
bugs or makes them obsolete.
lxc-1.0.7-4.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.