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We have a patch that copies the host entitlements to a tmpfs which is then mounted in the containers. This tmpfs is immediately unmounted on the host when the container is reported as started.

Unfortunately libcontainer reports the container as started before the volumes are mounted, so there is a race here where we sometimes unmount to early on the host, making the tmpfs go away.

I've got a libcontainer patch that makes the parent sync to the child at a later time, fixing this:
https://github.com/docker/libcontainer/pull/22

The fix is in the htb2 branch as: https://github.com/lsm5/docker/commit/4c4b605e974ff73baff274914d29e2e649b88d15

Fixed in docker-1.0

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.

http://rhn.redhat.com/errata/RHBA-2014-1266.html