[lxc-devel] lxc-start from git hangs in init

Kevin Wilson wkevils at gmail.com
Fri Apr 26 13:35:13 UTC 2013


Hello,
This is the output (o1); I ran on
Ubuntu 12.10 (GNU/Linux 3.5.0-17-generic x86_64)

lxc-start -n CN -l info -o o1  -f /etc/lxc/lxc.conf /sbin/init


And /etc/lxc/lxc.conf is in fact commented out:
 more  /etc/lxc/lxc.conf
#lxc.network.type=veth
#lxc.network.link=lxcbr0
#lxc.network.flags=up

cat o1:
=====

      lxc-start 1366983019.740 INFO     lxc_apparmor - apparmor_load -
apparmor is disabled
      lxc-start 1366983019.740 INFO     lxc_start - 'CN' is initialized
      lxc-start 1366983019.765 INFO     lxc_cgroup - writing to
/sys/fs/cgroup/cpuset/cgroup.clone_children

      lxc-start 1366983019.765 INFO     lxc_cgroup - writing to
/sys/fs/cgroup/cpu/cgroup.clone_children

      lxc-start 1366983019.766 INFO     lxc_cgroup - writing to
/sys/fs/cgroup/cpuacct/cgroup.clone_children

      lxc-start 1366983019.766 INFO     lxc_cgroup - writing to
/sys/fs/cgroup/memory/cgroup.clone_children

      lxc-start 1366983019.766 INFO     lxc_cgroup - writing to
/sys/fs/cgroup/devices/cgroup.clone_children

      lxc-start 1366983019.766 INFO     lxc_cgroup - writing to
/sys/fs/cgroup/freezer/cgroup.clone_children

      lxc-start 1366983019.766 INFO     lxc_cgroup - writing to
/sys/fs/cgroup/blkio/cgroup.clone_children

      lxc-start 1366983019.766 INFO     lxc_cgroup - writing to
/sys/fs/cgroup/perf_event/cgroup.clone_children

      lxc-start 1366983019.793 NOTICE   lxc_conf - 'CN' is setup.
      lxc-start 1366983019.794 NOTICE   lxc_start - exec'ing '/sbin/init'
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .15 20
0:14 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sysfs rw
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /sys.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .16 20
0:3 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /proc.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .17 20
0:5 / /dev rw,relatime - devtmpfs udev
rw,size=500488k,nr_inodes=125122,mode=755
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /dev.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .18 17
0:11 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts
rw,gid=5,mode=620,ptmxmode=000
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /dev/pts.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .19 20
0:15 / /run rw,nosuid,relatime - tmpfs tmpfs rw,size=203828k,mode=755
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /run.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .20 1
8:7 / / rw,relatime - ext4
/dev/disk/by-uuid/6650bc09-77d5-431b-8af5-26d093dd0783
rw,errors=remount-ro,data=ordered
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .21 20
0:6 / /var/lib/ureadahead/debugfs rw,relatime - debugfs none rw
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/var/lib/ureadahead/debugfs.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .22 15
0:16 / /sys/fs/cgroup rw,relatime - tmpfs cgroup rw,mode=755
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /sys/fs/cgroup.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .23 15
0:17 / /sys/fs/fuse/connections rw,relatime - fusectl none rw
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/sys/fs/fuse/connections.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .24 15
0:6 / /sys/kernel/debug rw,relatime - debugfs none rw
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /sys/kernel/debug.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .25 15
0:10 / /sys/kernel/security rw,relatime - securityfs none rw
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/sys/kernel/security.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .26 19
0:18 / /run/lock rw,nosuid,nodev,noexec,relatime - tmpfs none
rw,size=5120k
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /run/lock.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .27 19
0:19 / /run/shm rw,nosuid,nodev,relatime - tmpfs none rw
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /run/shm.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .28 19
0:20 / /run/user rw,nosuid,nodev,noexec,relatime - tmpfs none
rw,size=102400k,mode=755
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is . /run/user.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .29 22
0:21 / /sys/fs/cgroup/cpuset rw,relatime - cgroup cgroup
rw,cpuset,clone_children
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/sys/fs/cgroup/cpuset.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .30 22
0:22 / /sys/fs/cgroup/cpu rw,relatime - cgroup cgroup
rw,cpu,clone_children
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/sys/fs/cgroup/cpu.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .31 22
0:23 / /sys/fs/cgroup/cpuacct rw,relatime - cgroup cgroup
rw,cpuacct,clone_children
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/sys/fs/cgroup/cpuacct.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .32 22
0:24 / /sys/fs/cgroup/memory rw,relatime - cgroup cgroup
rw,memory,clone_children
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/sys/fs/cgroup/memory.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .33 22
0:25 / /sys/fs/cgroup/devices rw,relatime - cgroup cgroup
rw,devices,clone_children
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/sys/fs/cgroup/devices.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .34 22
0:26 / /sys/fs/cgroup/freezer rw,relatime - cgroup cgroup
rw,freezer,clone_children
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/sys/fs/cgroup/freezer.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .35 22
0:27 / /sys/fs/cgroup/blkio rw,relatime - cgroup cgroup
rw,blkio,clone_children
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/sys/fs/cgroup/blkio.
      lxc-start 1366983019.794 INFO     lxc_conf - looking at .36 22
0:28 / /sys/fs/cgroup/perf_event rw,relatime - cgroup cgroup
rw,perf_event,clone_children
.
      lxc-start 1366983019.794 INFO     lxc_conf - now p is .
/sys/fs/cgroup/perf_event.
      lxc-start 1366983019.794 NOTICE   lxc_start - '/sbin/init'
started with pid '1635'
      lxc-start 1366983019.794 INFO     lxc_console - no rootfs, no console.
      lxc-start 1366983019.794 WARN     lxc_start - invalid pid for SIGCHLD


rgs
Kevin

On Mon, Apr 22, 2013 at 7:39 PM, Serge Hallyn <serge.hallyn at ubuntu.com> wrote:
> Quoting Kevin Wilson (wkevils at gmail.com):
>> Hello,
>> I just want to add, following a different thread I read here, that:
>>
>> lxc-execute -n CN -f /etc/lxc/lxc.conf -- ps -ef
>> seems ok, it gives:
>> UID        PID  PPID  C STIME TTY          TIME CMD
>> root         1     0  0 05:39 pts/1    00:00:00 /usr/local/libexec/lxc/lxc-init
>> root         2     1  0 05:39 pts/1    00:00:00 ps -ef
>
> Actually no - lxc-execute hanging is independent of yoru lxc-start
> hanging on plymouthd.
>
> Please tell us the exact host version, and exact commands you used to
> create and start the container.  Start the contaienr with
>
>         sudo lxc-start -n CN -l info -o o1
>
> and send us o1.




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