On 11/14/2013 01:52 PM, hzguanqiang@xxxxxxxxxxxxxxxx wrote:
> On 2013-11-14 13:41 , Gao feng
<mailto:gaofeng@xxxxxxxxxxxxxx> 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:~$> ls /proc/self/ns
> >> ipc mnt net
pid user uts
> >>
> >> What's the problem?
> >>
> >
> > Does your system have system call
setns?
>
> grep setns /proc/kallsyms
> and
> grep setns the config.log of
libvirt.
>
>
> Hi, Gaofeng, thanks for your help. The info you want
are:
>
Hi,
> hzguanqiang@debian:~/github/libvirt$
<mailto:hzguanqiang@debian:~/github/libvirt$> sudo grep setns
/var/log/libvirt/libvirtd.log
config.log not libvirtd.log, or you can exec "./configure | grep
setns" under libvirt source directory.
> hzguanqiang@debian:~/github/libvirt$
<mailto:hzguanqiang@debian:~/github/libvirt$> grep setns
/proc/kallsyms
> ffffffff8105b993 T sys_setns
>
> What I found really strange is that the error info returned by
the command.
> hzguanqiang@debian:~$
<mailto: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.
>
we have two libvirt lxc related process at the first start,
one is controller process on host(pid 1544), the other is the
container's init task(pid 1545).
since lxc-enter-namespace wants to exec cmd in container
environment. so
libvirt will try to get the namespaces of container's init
task.
The problem is libvirt/autoconf thinks your system doesn't support
setns system call...
> The libvirt code of mine is of version 1.1.4 from github (git
checkout v1.1.4 -b stable1.1.4 )
>
I don't know if the libvirt git repo on github is the right thing,
but As I know
this repo git://libvirt.org/libvirt.git is official.
Please have a try.
Thanks
