Bug#866226: systemd 233 breaks docker with "no subsystem for mount" error

[Laurent Bigonville]

On Wed, 28 Jun 2017 16:54:40 +0200 Jeroen Verellen 
<jeroen.verellen at gmail.com> wrote:

 > Dear Maintainer,

Hi,

 >
 > I have an issue after the latest update of systemd. It seems to be 
similar as https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=843509
 >
 > When starting a docker container I get the following:
 >
 > docker start mysql
 > Error response from daemon: oci runtime error: 
container_linux.go:247: starting container process caused 
"process_linux.go:359: container init caused \"rootfs_linux.go:54: 
mounting \\\"cgroup\\\" to rootfs 
\\\"/var/lib/docker/overlay2/177270b60c5ab19437e45fc913e4242b89b8e1ed5913c707563cc9c4850512e2/merged\\\" 
at \\\"/sys/fs/cgroup\\\" caused \\\"no subsystem for mount\\\"\""
 > Error: failed to start containers: mysql

The bug is in the runc package and is already fixed upstream but not in 
debian (see: #856951).

As a workaround you might want to add 
"systemd.legacy_systemd_cgroup_controller=yes" to the kernel options at boot

Regards,

Laurent Bigonville