[Lxc-users] Can not start containers using latest tools from the git

Fri Jan 22 14:10:52 UTC 2010

On Fri, Jan 22, 2010 at 8:59 AM, Daniel Lezcano <daniel.lezcano at free.fr> wrote:
> John Drescher wrote:
>>>
>>> Gah ! ok, the last request : can you launch the container with the
>>> following
>>> command line ?
>>>
>>>  lxc-start -n guest_1 -l DEBUG -o $(tty)
>>> and give the output.
>>>
>
> Thanks for sending the output.
>
> [ ... ]
>
>>> Is it possible the /dev/shm was mounted at the boot time on the initrd
>>> disk
>>> ?
>>
>> On the host yes that is possible. I believe it would be easy to remove
>> the initrd on this machine since it's pretty scaled down being that it
>> runs inside of virtualbox.
>
> A did a change and commited it in the git tree. I think you should be able
> to start the container now. If it's the case I would be interested to see
> the log output with the fix.
>

Still did not start. BTW, I disabled the initrd on the host however I
did see a line during the host boot
mounting /dev/shm it is possible that openrc (new gentoo init system)
is mounting /dev/shm in the guest
as well. I can probably disable this after I find out what entry is
causing that.

localhost ~ #   lxc-start -n guest_1 -l DEBUG -o $(tty)
      lxc-start 1264151162.397 INFO     lxc_conf - tty's configured
      lxc-start 1264151162.397 DEBUG    lxc_start - sigchild handler set
      lxc-start 1264151162.397 INFO     lxc_start - 'guest_1' is initialized
      lxc-start 1264151162.400 DEBUG    lxc_conf - instanciated veth
'vethSCsXtA/vethuC7t3w', index is '10'
      lxc-start 1264151162.447 DEBUG    lxc_cgroup - using cgroup
mounted at '/cgroup'
      lxc-start 1264151162.448 DEBUG    lxc_cgroup - '/cgroup/8422'
renamed to '/cgroup/guest_1'
      lxc-start 1264151162.503 DEBUG    lxc_conf - move 'br0' to '8422'
      lxc-start 1264151162.503 INFO     lxc_conf - 'guest_1' hostname
has been setup
      lxc-start 1264151162.506 DEBUG    lxc_conf - 'veth0' has been setup
      lxc-start 1264151162.506 INFO     lxc_conf - network has been setup
      lxc-start 1264151162.506 DEBUG    lxc_cgroup - using cgroup
mounted at '/cgroup'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.deny' set to 'a # Deny all access to devices'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 1:3 rwm # dev/null'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 1:5 rwm # dev/zero'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 5:1 rwm # dev/console'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 5:0 rwm # dev/tty'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 4:0 rwm # dev/tty0'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 4:1 rwm # dev/tty1'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 4:2 rwm # dev/tty2'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 1:9 rwm # dev/urandon'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 1:8 rwm # dev/random'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 136:* rwm # dev/pts/*'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 5:2 rwm # dev/pts/ptmx'
      lxc-start 1264151162.507 DEBUG    lxc_conf - cgroup
'devices.allow' set to 'c 254:0 rwm'
      lxc-start 1264151162.507 INFO     lxc_conf - cgroup has been setup
      lxc-start 1264151162.507 DEBUG    lxc_conf - mounted none on
/lxc/guest_1/dev/pts, type devpts
      lxc-start 1264151162.507 DEBUG    lxc_conf - mounted none on
/lxc/guest_1/dev/shm, type tmpfs
      lxc-start 1264151162.507 DEBUG    lxc_conf - mounted
/usr/portage on /lxc/guest_1/usr/portage, type none
      lxc-start 1264151162.507 INFO     lxc_conf - mount points have been setup
      lxc-start 1264151162.507 INFO     lxc_conf - mount points have been setup
      lxc-start 1264151162.507 INFO     lxc_conf - console
'/dev/pts/0' mounted to '/lxc/guest_1/dev/console'
      lxc-start 1264151162.507 INFO     lxc_conf - 4 tty(s) has been setup
      lxc-start 1264151162.508 DEBUG    lxc_conf - temporary
mountpoint for old rootfs is './lxc-oldrootfs-WIzwQn'
      lxc-start 1264151162.508 DEBUG    lxc_conf - pivot_root syscall
to '/lxc-oldrootfs-WIzwQn' successful
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/proc/bus/usb'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/lib64/rc/init.d'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/dev/pts'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/sys'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/dev'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/cgroup'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/lxc/guest_1/dev/pts'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/lxc/guest_1/dev/shm'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/lxc/guest_1/usr/portage'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/lxc/guest_1/dev/console'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/lxc/guest_1/dev/tty1'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/lxc/guest_1/dev/tty2'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/lxc/guest_1/dev/tty3'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/lxc/guest_1/dev/tty4'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/proc'
      lxc-start 1264151162.508 DEBUG    lxc_conf - umounted
'/lxc-oldrootfs-WIzwQn/dev/shm'
      lxc-start 1264151162.508 ERROR    lxc_conf - Device or resource
busy - could not unmount old rootfs
lxc-start: Device or resource busy - could not unmount old rootfs
      lxc-start 1264151162.508 ERROR    lxc_conf - failed to
pivot_root to '/lxc/guest_1'
lxc-start: failed to pivot_root to '/lxc/guest_1'
      lxc-start 1264151162.508 ERROR    lxc_conf - failed to set
rootfs for 'guest_1'
lxc-start: failed to set rootfs for 'guest_1'
      lxc-start 1264151162.509 ERROR    lxc_start - failed to setup
the container
lxc-start: failed to setup the container
      lxc-start 1264151162.509 NOTICE   lxc_start - '/sbin/init'
started with pid '8422'
      lxc-start 1264151162.509 DEBUG    lxc_utils - closing fd '1'
      lxc-start 1264151162.509 DEBUG    lxc_utils - closing fd '0'
      lxc-start 1264151162.509 DEBUG    lxc_utils - closed all
inherited file descriptors
      lxc-start 1264151162.565 DEBUG    lxc_start - child exited
      lxc-start 1264151162.565 INFO     lxc_error - child <8422> ended
on error (255)
      lxc-start 1264151162.565 DEBUG    lxc_cgroup - using cgroup
mounted at '/cgroup'
      lxc-start 1264151162.645 DEBUG    lxc_cgroup - '/cgroup/guest_1' unlinked

Also thanks a lot for your help!
John