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Committer:
Serge Hallyn
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Date:
2014-08-27 21:25:58 UTC
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Revision ID:
serge.hallyn@ubuntu.com-20140827212558-3fk017ukcbizipbt
cgroup: don't mark cgroup to autremove.
We have a race. When main upstart job exits, all tasks are removed
from the cgroup, so autoremove kicks in. Then post-stop tries to create
the same cgroup again. Then it execs the tasks to be run in that
cgroup. Between the re-create and the exec, the autoremove thread may
actually run and remove the cgroup.
So simply remove the cgroup after post-stop. We mark it for autoremove
(in case there is a lingering task) and also try to recursively remove it.