Re: Problem about lxc-enter-namespace interface

"hzguanqiang@xxxxxxxxxxxxxxxx" <hzguanqiang@xxxxxxxxxxxxxxxx> · Thu, 14 Nov 2013 13:52:30 +0800

On 2013-11-14 13:41 , Gao 
feng wrote:

        On 11/14/2013 01:24 PM, Gao feng wrote:
        > On 11/14/2013 10:59 AM, hzguanqiang@xxxxxxxxxxxxxxxx 
        wrote:
        >> Hi experts,
        >>  
        >> When I test lxc-enter-namespace interface, it turned out 
        such an error:
        >>  
        >> hzguanqiang@debian:~$ <mailto:hzguanqiang@debian:~$> 
        vir version
        >> Compiled against library: libvirt 1.1.4
        >> Using library: libvirt 1.1.4
        >> Using API: LXC 1.1.4
        >> Running hypervisor: LXC 3.9.6
        >>  
        >> hzguanqiang@debian:~$ <mailto:hzguanqiang@debian:~$> 
        vir list
        >> Id    
        Name                           
        State
        >> ----------------------------------------------------
        >> 1544  
        instance-00000015              
        running
        >>  
        >> hzguanqiang@debian:~$ <mailto:hzguanqiang@debian:~$> 
        vir lxc-enter-namespace 1544 --noseclabel /bin/df -hl
        >> error: Cannot get namespaces for 1545: Function not 
        implemented
        >>  
        >> hzguanqiang@debian:~$ <mailto:hzguanqiang@debian:~$> 
        ls /proc/self/ns
        >> ipc  mnt  net  pid  user  
        uts
        >>  
        >> What's the problem?
        >>  
        > 
        > Does your system have system call setns?

        grep setns /proc/kallsyms
        and
        grep setns the config.log of libvirt.

Hi, Gaofeng, thanks for your help. The info you want are:

hzguanqiang@debian:~/github/libvirt$ 
sudo grep setns /var/log/libvirt/libvirtd.log
hzguanqiang@debian:~/github/libvirt$ 
grep setns /proc/kallsyms 
ffffffff8105b993 T sys_setns

What I found really strange is that the error info returned by the 
command.

    hzguanqiang@debian:~$ vir 
lxc-enter-namespace 1544 --noseclabel /bin/df -hl
    error: Cannot get namespaces for 1545: Function not 
implemented
The instance id is 1544, but the error info hint cannot get ns for 
1545.

The libvirt code of mine is of version 1.1.4 from github (git checkout 
v1.1.4 -b stable1.1.4 )

------------------     
Best 
regards!
GuanQiang
13:46:44
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