Looks like this is fixed at least in 16.04 via: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1607404
The change in the kernel was: https://github.com/torvalds/linux/commit/30402c8949934fbaca07d9c20074d0d7a5a8385f In the release notes in #1607404 the following are listed, which seem to match the fix: - vfs: add d_real_inode() helper - af_unix: fix hard linked sockets on overlay -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1214500 Title: consistent failure with overlayfs and unix sockets Status in linux package in Ubuntu: Confirmed Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1214500/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
