[Bug 1214500] [NEW] consistent failure with overlayfs and unix sockets

[Sidnei da Silva]

Public bug reported:

Seems like overlayfs and unix sockets are not playing well. It might be
racy, as it fails consistently on my laptop with an SSD, whereas for
smoser it only failed a single time.

Steps to reproduce:

REL="precise"
$ sudo lxc-create -n source-$REL-amd64 -t ubuntu-cloud -- \
   --release=$REL --arch=amd64

## clone via overlayfs ##
$ sudo lxc-clone --snapshot -B overlayfs -o source-$REL-amd64 -n $REL-overlayfs-01

$ sudo lxc-start -n $REL-overlayfs-01


### inside ###
$ sudo apt-get update && sudo apt-get install supervisor -y

$ sudo service supervisor stop
$ sudo sed -i.dist 's,var/run/*supervisor.sock,srv/supervisor.sock,' /etc/supervisor/supervisord.conf
$ sudo service supervisor start
$ sudo supervisorctl maintail
unix:///srv/supervisor.sock refused connection

** Affects: lxc (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1214500

Title:
  consistent failure with overlayfs and unix sockets

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