Public bug reported: In xenial-updates, docker.io 1.12.6-0ubuntu1~16.04.1 seems to have problems with removing containers sometimes, in particular if we've left nfs mounts inside the container (which was running with --privileged ) I'm still working on a simple test case isolated from the complexities of our infrastructure.
See the attached log excerpt. It appears that this may be due to the upstream change: https://github.com/moby/moby/pull/22806 There are other reports of it causing trouble with aufs (which I suspect gets little attention from the docker project as it's mostly unavailable in other distribtuions): https://github.com/moby/moby/issues/22260 As a workaround, setting MountFlags=private seems to be working for me, but it has caused a definite regression. Hosts we have running earlier xenial with 1.10.3-0ubuntu6 do not seem to exhibit this issue. ** Affects: docker.io (Ubuntu) Importance: Undecided Status: New ** Attachment added: "error from dockerd" https://bugs.launchpad.net/bugs/1699921/+attachment/4901231/+files/docker-error -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1699921 Title: Upstream removal of MountFlags from systemd unit causes aufs problems To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/docker.io/+bug/1699921/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs