Support clean container reboot vs shutdown disambiguation

This is required in order to reach our goal of having a unmodified precise image (without the lxcguest package) start in a container.

Hi Serge,

Can you attach the patch by Daniel Lezcano, or post a link to the patch?

Quoting Joseph Salisbury (<email address hidden>):
> Hi Serge,
>
> Can you attach the patch by Daniel Lezcano, or post a link to the patch?

patch 0/1 is here:

https://lkml.org/lkml/2012/1/5/57

(if that's not convenient let me know and I'll extract and post the
patch, or I can post a tree on kernel.u.c)

Thank you for taking the time to file a bug report on this issue.

However, given the number of bugs that the Kernel Team receives during any development cycle it is impossible for us to review them all. Therefore, we occasionally resort to using automated bots to request further testing. This is such a request.

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Hi Serge,

Thanks for posting the link. Do you know if this patch will make it into the 3.2 mainline kernel?

I ask because we would rather have the patch come through a stable update from upstream vs cherry picking it.

Quoting Joseph Salisbury (<email address hidden>):
> Hi Serge,
>
> Thanks for posting the link. Do you know if this patch will make it
> into the 3.2 mainline kernel?

I don't see it going into 3.2, no. I'm hoping 3.3, but I don't even
know when that merge window closes.

bug 914716 in libvirt is also dependent on the kernel patch.

(not making it a duplicate of this bug because it will require a separate userspace patch to exploit)

Are you requesting that this patch be cherry picked for Precise?

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 914676

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

@Joseph:

yes, cherry-picking that patch for precise would be ideal for us.

This bug was fixed in the package lxc - 0.7.5-3ubuntu12

---------------
lxc (0.7.5-3ubuntu12) precise; urgency=low

  * If the kernel supports container reboot disambuation, then don't drop
    CAP_SYS_BOOT, and (always) try to use it after the container exits.
    (LP: #914676)
  * 0027-fix-lxc-netstat.patch: fix lxc-netstat for new nested cgroup
    handling (LP: #921732)
  * 0028-recursively-rmdir-cgroups.patch: if the container has created
    any cgroups (i.e. by starting libvirt), make sure to delete those.
    (LP: #921808)
 -- Serge Hallyn <email address hidden> Wed, 25 Jan 2012 14:22:51 -0600

This bug was fixed in the package linux - 3.2.0-11.19

---------------
linux (3.2.0-11.19) precise; urgency=low

  [ Daniel Lezcano ]

  * SAUCE: Add reboot_pid_ns to handle the reboot syscall
    - LP: #914676

  [ Upstream Kernel Changes ]

  * ALSA: hda - Introduce snd_hda_get_pin_label()
  * ALSA: hda - Cache the jack-detection value
  * ALSA: hda - Create jack-detection kcontrols
  * ALSA: hda - Manage unsol tags in hda_jack.c
  * ALSA: Introduce common helper functions for jack-detection control
  * ALSA: HDA: Jack: Export required functions from hda_jack.c
  * ALSA: hda/jack - Fix NULL-dereference at probing
  * ALSA: hda/jack - Fix the assignment of input jack-type
  * ALSA: hda - Add missing initialization of kctl jack status
  * ALSA: hda - Add missing inclusion of linux/export.h
  * ALSA: hda - Give more unique names by snd_hda_get_pin_label()
  * ALSA: hda - Fix a typo
  * ALSA: hda - Don't add channel suffix for headphone pin labels
  * ALSA: hda - Integrate input-jack stuff into kctl-jack
  * ALSA: hda/realtek - Avoid conflict of unsol-events with static quirks
  * ALSA: hda/realtek - Remove use_jack_tbl field
 -- Leann Ogasawara <email address hidden> Wed, 25 Jan 2012 06:57:19 -0800