On 2013-11-14 14:17 , Gao feng wrote:
On 11/14/2013 01:52 PM, hzguanqi...@corp.netease.com wrote:
> On 2013-11-14 13:41 , Gao feng <mailto:gaof...@cn.fujitsu.com> wrote:
>
> On 11/14/2013 01:24 PM, Gao feng wrote:
> > On 11/14/2013 10:59 AM, hzguanqi...@corp.netease.com 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
Sorry, I made a mistake about the libvirt repo, the code I used is just from
the official repo.
Maybe it's problem of my kernel. I've tried to build libvirt from code of
master branch. The
mistake is just the same.
------------------
Best regards!
GuanQiang
14:52:30
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