** Changed in: lxc (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1699903

Title:
  lxc-sshd won't start with 2.0.8

Status in lxc package in Ubuntu:
  Fix Released

Bug description:
  On a xenial system after an update to lxc, starting a container
  created with the lxc-sshd template fails consistently. This does not
  occur with 2.0.7.

  root@xenial:~# lxc-create -n mysshd -t /usr/share/lxc/templates/lxc-sshd 
  Generating public/private rsa key pair.
  Your identification has been saved in 
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_rsa_key.
  Your public key has been saved in 
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_rsa_key.pub.
  The key fingerprint is:
  SHA256:eR4Kv8JpWxe+RvIudD8LTuOYSGmLdnmX1CgB3Y/IHP4 root@xenial
  The key's randomart image is:
  +---[RSA 2048]----+
  |       . .       |
  |      . o .      |
  |       = o o     |
  |        *.. .    |
  |      . So+o     |
  |       ++=Eo.    |
  |     .+++BBo     |
  |    .+B+oO=+o    |
  |   ..o+++== .o   |
  +----[SHA256]-----+
  Generating public/private dsa key pair.
  Your identification has been saved in 
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_dsa_key.
  Your public key has been saved in 
/var/lib/lxc/mysshd/rootfs/etc/ssh/ssh_host_dsa_key.pub.
  The key fingerprint is:
  SHA256:Jmet2LLZMtolKBhfDQ/Za4i3yr0/993umj4Hq0D8Qyg root@xenial
  The key's randomart image is:
  +---[DSA 1024]----+
  |                 |
  |     o           |
  |    + .          |
  |   . * o o       |
  |. . + E S o      |
  | + o + X +  .    |
  |. o o + = o  o   |
  | . + .+B.. ooo.  |
  |  o ++==..oo=*+  |
  +----[SHA256]-----+

  
  root@xenial:~# lxc-start -n mysshd --logfile mysshd.log
  lxc-start: tools/lxc_start.c: main: 366 The container failed to start.
  lxc-start: tools/lxc_start.c: main: 368 To get more details, run the 
container in foreground mode.
  lxc-start: tools/lxc_start.c: main: 370 Additional information can be 
obtained by setting the --logfile and --logpriority options.

  
  root@xenial:~# cat mysshd.log 
        lxc-start 20170622214710.829 ERROR    lxc_conf - 
conf.c:lxc_setup_dev_console:1473 - Read-only file system - error unlinking 
/usr/lib/x86_64-linux-gnu/lxc/dev/console
        lxc-start 20170622214710.829 ERROR    lxc_conf - conf.c:lxc_setup:4055 
- failed to setup the console for 'mysshd'
        lxc-start 20170622214710.829 ERROR    lxc_start - start.c:do_start:811 
- Failed to setup container "mysshd".
        lxc-start 20170622214710.829 ERROR    lxc_sync - sync.c:__sync_wait:57 
- An error occurred in another process (expected sequence number 3)
        lxc-start 20170622214710.868 ERROR    lxc_start - 
start.c:__lxc_start:1358 - Failed to spawn container "mysshd".
        lxc-start 20170622214715.901 ERROR    lxc_start_ui - 
tools/lxc_start.c:main:366 - The container failed to start.
        lxc-start 20170622214715.901 ERROR    lxc_start_ui - 
tools/lxc_start.c:main:368 - To get more details, run the container in 
foreground mode.
        lxc-start 20170622214715.901 ERROR    lxc_start_ui - 
tools/lxc_start.c:main:370 - Additional information can be obtained by setting 
the --logfile and --logpriority options.

  
  root@xenial:~# dpkg -l '*lxc*'
  Desired=Unknown/Install/Remove/Purge/Hold
  | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
  |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
  ||/ Name                                   Version                  
Architecture             Description
  
+++-======================================-========================-========================-==================================================================================
  un  liblxc0                                <none>                   <none>    
               (no description available)
  ii  liblxc1                                2.0.8-0ubuntu1~16.04.2   amd64     
               Linux Containers userspace tools (library)
  ii  lxc                                    2.0.8-0ubuntu1~16.04.2   all       
               Transitional package for lxc1
  ii  lxc-common                             2.0.8-0ubuntu1~16.04.2   amd64     
               Linux Containers userspace tools (common tools)
  ii  lxc-templates                          2.0.8-0ubuntu1~16.04.2   amd64     
               Linux Containers userspace tools (templates)
  ii  lxc1                                   2.0.8-0ubuntu1~16.04.2   amd64     
               Linux Containers userspace tools
  ii  lxcfs                                  2.0.6-0ubuntu1~16.04.1   amd64     
               FUSE based filesystem for LXC
  un  lxctl                                  <none>                   <none>    
               (no description available)
  ii  python3-lxc                            2.0.8-0ubuntu1~16.04.2   amd64     
               Linux Containers userspace tools (Python 3.x bindings)

  Removing the addition of the bind-mount for /dev to the config from
  the template seems to move the start along, yet implications of doing
  this are unknown.

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