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Merge pull request #42331 from AkihiroSuda/dind-fix-cgroup2-evac

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hack/dind: fix cgroup v2 evacuation with `docker run --init`
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Sebastiaan van Stijn 2021-04-30 10:08:36 +02:00 • committed by GitHub
commit 59751bb233
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1 changed files with 3 additions and 2 deletions
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@ -27,10 +27,11 @@ fi
# cgroup v2: enable nesting # cgroup v2: enable nesting
if [ -f /sys/fs/cgroup/cgroup.controllers ]; then if [ -f /sys/fs/cgroup/cgroup.controllers ]; then
# move the init process (PID 1) from the root group to the /init group, # move the processes from the root group to the /init group,
# otherwise writing subtree_control fails with EBUSY. # otherwise writing subtree_control fails with EBUSY.
# An error during moving non-existent process (i.e., "cat") is ignored.
mkdir -p /sys/fs/cgroup/init mkdir -p /sys/fs/cgroup/init
echo 1 > /sys/fs/cgroup/init/cgroup.procs xargs -rn1 < /sys/fs/cgroup/cgroup.procs > /sys/fs/cgroup/init/cgroup.procs || :
# enable controllers # enable controllers
sed -e 's/ / +/g' -e 's/^/+/' < /sys/fs/cgroup/cgroup.controllers \ sed -e 's/ / +/g' -e 's/^/+/' < /sys/fs/cgroup/cgroup.controllers \
> /sys/fs/cgroup/cgroup.subtree_control > /sys/fs/cgroup/cgroup.subtree_control