[Bug 1556447] Re: lxc-start fails: lxc_cgfsng - cgfsng.c:all_controllers_found:430 - no systemd controller mountpoint found

[Stephen Warren]

After updating to the latest packages, this issue is solve. I can lxc-
start, lxc-attach, lxc-stop, and lxc-execute.

I do get some warning/error spew when running lxc-execute though. If
this looks unexpected, I can open a separate bug for it:

$ lxc-execute -n t1 -- /bin/bash
lxc-execute: utils.c: safe_mount: 1691 Invalid argument - Failed to mount /sys/kernel/debug onto /usr/lib/x86_64-linux-gnu/lxc/sys/kernel/debug
lxc-execute: utils.c: safe_mount: 1691 Device or resource busy - Failed to mount mqueue onto /usr/lib/x86_64-linux-gnu/lxc/dev/mqueue
init.lxc.static: initutils.c: mount_fs: 36 failed to mount /proc : Device or resource busy
init.lxc.static: initutils.c: mount_fs: 36 failed to mount /dev/mqueue : Device or resource busy

The first two of those show up in the container log file upon lxc-start
too:

lxc-start 20160316211700.325 ERROR    lxc_utils - utils.c:safe_mount:1691 - Invalid argument - Failed to mount /sys/kernel/debug onto /usr/lib/x86_64-linux-gnu/lxc/sys/kernel/debug
lxc-start 20160316211700.325 ERROR    lxc_utils - utils.c:safe_mount:1691 - Device or resource busy - Failed to mount mqueue onto /usr/lib/x86_64-linux-gnu/lxc/dev/mqueue

Thanks very much for fix and bug comments; this has been one of the most
productive bug reports I've ever filed:-)

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https://bugs.launchpad.net/bugs/1556447

Title:
  lxc-start fails: lxc_cgfsng - cgfsng.c:all_controllers_found:430 - no
  systemd controller mountpoint found

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