I've found the issue. My container is not LXC, it's supplied by elastichosts.com, a cloud provider, and must be based on some other containerization technology.
/proc/1/environ does not contain container=lxc as checked for by the postinit script in makedev, but it does have container=contain in it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1675163 Title: Don't attempt to create devices in LXC containers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/makedev/+bug/1675163/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs