[Bug 1480411] Re: rm -r * fails to delete directories when using overlayfs in a user-namespace

[oleg]

I don't quite get the point underlying Serge's preceding comment, so
I'll describe the problem I'm experiencing with lxc and see whether
Serge classifies it as a bug.

On an ubuntu-vivid (amd64) host, create an unprivileged vivid container named 'vivid',
   lxc-create -n vivid -t download -- -d ubuntu -r vivid -a amd64
Start and attach to the container and create foo/bar.txt .  Stop the container.

Then form a second container named vivid_overlay, 
   lxc-clone -s -B overlayfs vivid vivid_overlay
Start and attach to vivid_overlay.
Delete bar.txt  (this should succeed).
Attempt to delete foo.  I get "Operation not permitted", even as root in the container.

The same issue arises if I replace the overlay container with an ephemeral container,
   lxc-start-ephemeral -o vivid -n vivid_ephemeral

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https://bugs.launchpad.net/bugs/1480411

Title:
  rm -r * fails to delete directories when using overlayfs in a user-
  namespace

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