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Re: [libvirt] lxc: shutdown $domain broken in libvirt 1.2.3



On 09.09.2014 18:25, Steven Wilson wrote:
We recently ran into libvirt lxc shutdown failing because of mount
namespaces not being available:

# virsh -c lxc:/// start test01
Domain test01 started

# virsh -c lxc:/// list
  Id    Name                           State
----------------------------------------------------
  9336  test01                         running

# virsh -c lxc:/// shutdown test01
error: Failed to shutdown domain test01
error: Mount namespaces are not available on this platform: Function not
implemented

/var/log/libvirt/libvirtd.log:
2014-09-03 15:50:50.682+0000: 3030: error :
virProcessRunInMountNamespace:999 : Mount namespaces are not available
on this platform: Function not implemented

We're running Debian wheezy with stock libc6 2.13-38, a custom 3.12.15
kernel (with namespace support) and libvirt 1.2.3.

This may be the problem. Libvirt needs setns() syscall as of 1.2.2 which may not exist in your custom kernel. Or maybe you have old kernel-headers package so the libvirt's configure script doesn't see the syscall.


The patch in this previous thread fixes shutdown for us and we'd like to
see it merged upstream:

https://www.redhat.com/archives/libvir-list/2014-May/msg00175.html

From this it seems like glic is wrapping the syscall, so a glibc update may solve the issue. If that's the case we may need to update our libvirt.spec.in to reflect that.

Michal


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