[lxc-devel] [Lxc-users] child setpgid [...] : No such process

[lxc at zitta.fr]

Le 12/03/2010 14:15, Daniel Lezcano a écrit :
>
> lxc at zitta.fr wrote:
>> Le 12/03/2010 13:51, Daniel Lezcano a écrit :
>>  
>>> lxc at zitta.fr wrote:
>>>    
>>>> Le 11/03/2010 19:47, Daniel Lezcano a écrit :
>>>>  
>>>>      
>>>>> lxc at zitta.fr wrote:
>>>>>           
>>>>>> I created a new container (karmic), then I type any command there is
>>>>>> curious message, but it works:
>>>>>>                   
>>>>> Do you mean you created a system container with karmic inside ?
>>>>>             
>>>> Yes, I'm testing a new version of my provisioning scripts.
>>>>  
>>>>      
>>>>> Can you give the kernel version, the lxc version, the container
>>>>> configuration and the command used to spawn the container ?
>>>>>             
>>>> config as attachment.
>>>>
>>>> black provisioning # uname -a
>>>> Linux black 2.6.31-zen11-lxc-bt #1 ZEN SMP PREEMPT Tue Feb 23 09:13:02
>>>> CET 2010 x86_64 Intel(R) Core(TM)2 Quad CPU Q9450 @ 2.66GHz
>>>> GenuineIntel
>>>> GNU/Linux
>>>>
>>>> black provisioning # eix -I lxc | grep Installed
>>>>      Installed versions:  0.6.4-r2(22:25:37 04/01/2010)(doc -examples)
>>>>
>>>> Container started with : lxc-start -d -n mycontainer
>>>>
>>>> I access to it via ssh.
>>>>
>>>> Just a question, config file is used at once at create?
>>>>  
>>>>      
>>>>>> root at mycontainer:~# ls /
>>>>>> -bash: child setpgid (28212 to 28212): No such process
>>>>>> bin  boot  dev  etc  home  lib  lib64  media  mnt  opt  proc  root
>>>>>> sbin  selinux  srv  sys  tmp  usr  var
>>>>>>                 
>>> When you are in the container, can you give the ouput of:
>>>
>>>  echo $$
>>>  ps axjf
>>>
>>>
>>>
>>>     
>> yes, I can :
>>
>>     root at mycontainer:~# ls
>>     -bash: child setpgid (1905 to 1905): No such process
>>     root at mycontainer:~# echo $$
>>     74
>>     root at mycontainer:~# ps axjf
>>     -bash: child setpgid (1907 to 1907): No such process
>>      PPID   PID  PGID   SID TTY      TPGID STAT   UID   TIME COMMAND
>>         0     1     1     1 ?           -1 Ss       0   0:00 /sbin/init
>>         1    13    10    10 ?           -1 Sl     101   0:00 rsyslogd
>> -c4
>>         1    54    54    54 ?           -1 Ss       0   0:00
>> /usr/sbin/sshd
>>         1    68    68    68 tty1        81 Ss       0   0:00 /bin/login
>>     --           68    74    74    68 tty1        81 S        0  
>> 0:00  \_ -bash
>>        74    81    81    68 tty1        81 R+       0   0:00      \_
>> ps axjf
>>   
>
> Very weird ...
>
> Another one :)
>
> strace -f -eclone,setpgid bash
> and then /bin/true (or whatever).
>
>
>
At same time, I was upgrading my kernel from 2.6.31 to 2.6.33.
And it works now.
I have done a rollback to reproduce. Clearly, my old kernel is the issue.

After some searches, it seems that my 2.6.31 kernel loosed 2 config
items from my previous config :
CONFIG_CGROUP_CPUACCT
CONFIG_CGROUP_SCHED

do you think this is the problem ?