Tested with Serge and confirmed to be a bug in LXC's Ubuntu template. The generated "fstab" contains: devpts /var/lib/lxc/drupal01/rootfs/dev/pts devpts defaults 0 0
Which shouldn't be present. That line is causing /dev/pts on the "host" to be mounted with the wrong flags everytime one calls lxc-start on a container that has the above line in its fstab. The workaround as mentioned before is to run: mount -o remount /dev/pts and the temporary fix is to remove the line above from the container's fstab. Here's a quick test I made to reproduce the issue: root@castiana:~# grep pts /proc/mounts none /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 root@castiana:~# lxc-start -n weblive01 -d root@castiana:~# lxc-start -n drupal01 -d root@castiana:~# grep pts /proc/mounts none /dev/pts devpts rw,nosuid,noexec,relatime,mode=600,ptmxmode=000 0 0 The full strace can be found at: http://paste.ubuntu.com/604151/ and a "grep pts" on that same trace at: http://paste.ubuntu.com/604152/ ** Changed in: lxc (Ubuntu) Status: Invalid => Triaged ** Changed in: lxc (Ubuntu) Importance: Undecided => High ** Changed in: lxc (Ubuntu) Assignee: (unassigned) => Serge Hallyn (serge-hallyn) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/607636 Title: chardev: opening backend "pty" failed -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
