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[Casey Marshall <casey.marshall@xxxxxxxxxxxxx>]

@stforshee I'll uncomment the debugfs mount in my
/usr/share/lxc/config/ubuntu.common.conf (putting it back the way it
was), reboot, and see if I can reproduce it again.

My juju-lxd profile shows:

name: juju-lxd
config:
  boot.autostart: "true"
  security.nesting: "true"
description: ""
devices: {}

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https://bugs.launchpad.net/bugs/1551854

Title:
  LXD bootstrap issues on xenial

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I'm using lxd with zfs block storage on xenial, and having issues with
  trusty containers. I've witnessed this problem when trying to
  bootstrap as well as after rebooting the host and a container failed
  to start.

  In the latter case, the container that failed to start was the juju
  controller:

  c@mawhrin-skel:~/omnibus-layers$ lxc list                                                                                                        [3/3]
  +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+
  |                        NAME                         |  STATE  |              IPV4              | IPV6 |    TYPE    | SNAPSHOTS |
  +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+
  | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-0 | STOPPED |                                |      | PERSISTENT |         0 |
  +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+
  | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-1 | RUNNING | 10.0.3.28 (eth0)               |      | PERSISTENT |         0 |
  +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+
  | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-2 | RUNNING | 10.0.3.85 (eth0)               |      | PERSISTENT |         0 |
  +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+
  | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-3 | RUNNING | 10.0.3.176 (eth0)              |      | PERSISTENT |         0 |
  +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+
  | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-4 | RUNNING | 10.0.3.66 (eth0)               |      | PERSISTENT |         0 |
  +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+
  | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-5 | RUNNING | 10.0.3.31 (eth0)               |      | PERSISTENT |         0 |
  +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+
  | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-6 | RUNNING | 10.0.3.196 (eth0)              |      | PERSISTENT |         0 |
  +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+
  | juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-7 | RUNNING | 10.0.3.186 (eth0)              |      | PERSISTENT |         0 |
  |                                                     |         | 10.0.4.1 (lxcbr0)              |      |            |           |
  +-----------------------------------------------------+---------+--------------------------------+------+------------+-----------+

  I manually started it, but found that no upstart services were
  started. Remembering this thread,
  https://lists.ubuntu.com/archives/juju/2016-February/006698.html, I
  checked /var/log/mountall.log in the machine-0 container, and sure
  enough:

  root@juju-5f4bd172-ad22-4726-8d84-47185ab31b54-machine-0:~# cat /var/log/upstart/mountall.log
  mount: permission denied
  mountall: mount /sys/kernel/debug [187] terminated with status 32
  mountall: Filesystem could not be mounted: /sys/kernel/debug

  The problem persists if I stop and start the container. If I remount
  /sys/kernel/debug on the host, then stop and start the container,
  upstart succeeds and the juju controller starts up.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-8-generic 4.4.0-8.23
  ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2
  Uname: Linux 4.4.0-8-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  c         24562 F.... pulseaudio
  CurrentDesktop: MATE
  Date: Tue Mar  1 10:52:45 2016
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=007cedda-f922-4e4c-89b1-57b31f18292e
  InstallationDate: Installed on 2016-02-28 (2 days ago)
  InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160224)
  MachineType: LENOVO 2306CTO
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-8-generic.efi.signed root=/dev/mapper/ubuntu--mate--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-8-generic N/A
   linux-backports-modules-4.4.0-8-generic  N/A
   linux-firmware                           1.156
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/22/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G2ETA1WW (2.61 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2306CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG2ETA1WW(2.61):bd04/22/2014:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2306CTO
  dmi.product.version: ThinkPad X230
  dmi.sys.vendor: LENOVO

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