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[Serge Hallyn <1530617@xxxxxxxxxxxxxxxxxx>]

ubuntu@upstart:~$ sudo lxc-start -n cloud1; sudo lxc-attach -n cloud1
root@cloud1:~# ps -ef
UID        PID  PPID  C STIME TTY          TIME CMD
root         1     0  0 04:55 ?        00:00:00 /sbin/init
root        99     0  0 04:55 pts/0    00:00:00 /bin/bash
root       117     1  0 04:55 ?        00:00:00 @sbin/plymouthd --mode=boot --attach-to-session
root       118     1  0 04:55 ?        00:00:00 plymouth-upstart-bridge
root       123     1  0 04:55 ?        00:00:00 mountall --daemon
root       127     1  0 04:55 ?        00:00:00 /bin/sh -e /proc/self/fd/9
root       136   127  0 04:55 ?        00:00:00 /bin/sh - /sbin/MAKEDEV std fd ppp tun
root       170     1  0 04:55 ?        00:00:00 run-parts --lsbsysinit /etc/update-motd.d
root       210   170  0 04:55 ?        00:00:00 /bin/sh -e /usr/lib/update-notifier/update-motd-updates-available
root       325   210  0 04:55 ?        00:00:00 /usr/bin/python3 /usr/lib/update-notifier/apt-check --human-readable
root       391     1  0 04:55 ?        00:00:00 upstart-udev-bridge --daemon
root       401     1  0 04:55 ?        00:00:00 /lib/systemd/systemd-udevd --daemon
root       453     1  0 04:55 ?        00:00:00 upstart-socket-bridge --daemon
root       998     1  0 04:55 ?        00:00:00 dhclient -1 -v -pf /run/dhclient.eth0.pid -lf /var/lib/dhcp/dhclient.eth0.leases eth0
syslog    1537     1  0 04:55 ?        00:00:00 rsyslogd
root      1554     1  0 04:55 ?        00:00:00 /usr/bin/python3 /usr/bin/cloud-init modules --mode=config
root      1555     1  0 04:55 ?        00:00:00 [sh] <defunct>
root      1574     1  0 04:55 ?        00:00:00 /sbin/cgproxy --sigstop
root      1627     1  0 04:55 ?        00:00:00 upstart-file-bridge --daemon
message+  1678     1  0 04:55 ?        00:00:00 dbus-daemon --system --fork
root      2014  1554  0 04:55 ?        00:00:00 initctl version
root      2016     1  0 04:55 ?        00:00:00 /bin/sh -e /proc/self/fd/9
root      2018     1  0 04:55 lxc/tty4 00:00:00 /sbin/getty -8 38400 tty4
root      2020     1  0 04:55 ?        00:00:00 /bin/sh -e /proc/self/fd/9
root      2024     1  0 04:55 ?        00:00:00 /bin/sh -e /proc/self/fd/9
root      2026     1  0 04:55 ?        00:00:00 atd
root      2029     1  0 04:55 ?        00:00:00 cron
root      2031     1  0 04:55 ?        00:00:00 acpid -c /etc/acpi/events -s /var/run/acpid.socket
root      2033     1  0 04:55 lxc/tty2 00:00:00 /sbin/getty -8 38400 tty2
root      2035    99  0 04:55 pts/0    00:00:00 ps -ef
root      2036     1  0 04:55 lxc/tty3 00:00:00 /sbin/getty -8 38400 tty3
root@cloud1:~# ubuntu@upstart:~$

-- 
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https://bugs.launchpad.net/bugs/1530617

Title:
  FUSE in wily image with upstart installed causes chaos

Status in lxc package in Ubuntu:
  Confirmed
Status in upstart package in Ubuntu:
  New

Bug description:
  Host:
  DISTRIB_ID=Ubuntu
  DISTRIB_RELEASE=15.10
  DISTRIB_CODENAME=wily
  DISTRIB_DESCRIPTION="Ubuntu 15.10"

  lxc version: 1.1.4-0ubuntu1

  In a LXC container running Ubuntu 15.10, install upstart-sysv to
  replace systemd. Using FUSE then causes almost all processes in the
  container to be killed.

  The following steps reproduce the problem using sshfs:

  # create a wily container and attach to it
  sudo lxc-create -t download -n wily -- -d ubuntu -r wily -a amd64
  sudo lxc-start -n wily
  sudo lxc-attach -n wily

  # inside the container, install upstart-sysv and reboot
  apt-get update && apt-get -y install upstart-sysv
  reboot

  # on the host, reattach to the container
  sudo lxc-attach -n wily

  # back in the container, install ssh and sshfs
  apt-get -y install openssh-server sshfs

  # create an ssh key pair in /root/.ssh
  ssh-keygen

  # set up passwordless ssh
  mkdir ~ubuntu/.ssh
  cat /root/.ssh/id_rsa.pub >> ~ubuntu/.ssh/authorized_keys
  eval $(ssh-agent)
  ssh-add /root/.ssh/id_rsa

  # take a note of the running processes and their PIDs
  ps axjf

  # run sshfs
  mkdir /fuse
  sshfs ubuntu@localhost:/ /fuse

  # we are kicked out of the container
  # run ps again in the container
  sudo lxc-attach -n wily -- ps axjf

  # a whole bunch of processes are now gone. the getty processes now
  have new PIDs, indicating they have been restarted.

  
  Other debugging performed:
  - On a 14.10 host with lxc version 1.1.0~alpha2-0ubuntu3.3, the problem does not occur. FUSE works fine.
  - On the same 14.10 host with lxc upgraded to 1.1.5-0ubuntu3~ubuntu14.04.1, the problem occurs.
  - On a 15.10 host, when running a wily container without upstart, the problem does not occur.
  - On a 15.10 host, when running a trusty container, the problem does not occur.
  - The problem can't be reproduced outside a container (15.10 host, install upstart-sysv, then use FUSE)

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