[Bug 1591124] Re: LXC: Cannot create a container with the specific alias "tasks"

[Simos Xenitellis ]

** Package changed: open-iscsi (Ubuntu) => lxd (Ubuntu)

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to open-iscsi in Ubuntu.
https://bugs.launchpad.net/bugs/1591124

Title:
  LXC: Cannot create a container with the specific alias "tasks"

Status in lxd package in Ubuntu:
  New

Bug description:
  When trying to launch a container with the specific alias "tasks", it
  fails to launch.

  $ lxc launch d23ee1f4fd28 tasks
  Creating tasks
  Starting tasks
  error: Error calling 'lxd forkstart tasks /var/lib/lxd/containers /var/log/lxd/tasks/lxc.conf': err='exit status 1'
  Try `lxc info --show-log tasks` for more info
  Exit 1

  The reason is that in /sys/fs/cgroup/systemd/lxc/ there is already a file called "tasks". In that directory, any new containers is created as a new directory that has as a name the alias that we have given.
  Since "tasks" is reserved", lxc fails to continue.

  Here are the contents of the directory
  $ ls -l /sys/fs/cgroup/systemd/lxc/
  total 0
  drwxrwxr-x 5 root 165536 0 Ιούν 10 12:32 c1
  -rw-r--r-- 1 root root   0 Ιούν 10 12:53 cgroup.clone_children
  -rw-r--r-- 1 root root   0 Ιούν 10 12:53 cgroup.procs
  -rw-r--r-- 1 root root   0 Ιούν 10 12:53 notify_on_release
  -rw-r--r-- 1 root root   0 Ιούν 10 12:53 tasks

  Currently, there is potential conflict with "tasks" only as the other filenames are invalid hostnames (contain dots or underscores).
  Presumably in the future there might be more such files.

  Among the solutions,
  1. the container directories in /sys/fs/cgroup/systemd/lxc/ should have something like ".lxd" appended to them so that there is no future conflict.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/1591124/+subscriptions