[libvirt-users] libvirt_lxc and sysfs

[Gao feng]

On 06/09/2013 08:14 PM, pr.G wrote:
> Hello.
> 
> Is it possible to start container via libvirt_lxc without mounting /sys
> inside container?
> 
> When I start container via lxc-start and do not add mount point to config, 
> then /sys inside container is empty.
> 
> When I do it via virsh -c lxc:// container.xml, then 
> /sys contains sysfs of the host and /sys on host becomes remounting read-only.

how can it be true? Can you post your /proc/mounts on host and container?

> 
> Am I doing something wrong or is this feature of libvirt_lxc? 
> 

Absolutely it's not a feature.

Thanks!

> Thanks.
> 
> root at host:~# uname -a
> Linux host 3.2.0-4-amd64 #1 SMP Debian 3.2.41-2+deb7u2 x86_64 GNU/Linux
> 
> root at host:~# cat /etc/os-release 
> PRETTY_NAME="Debian GNU/Linux 7.0 (wheezy)"
> ...
> 
> root at host:~# dpkg -l | grep libvirt
> ii  libvirt-bin   0.9.12-11 amd64   programs for the libvirt library
> ii  libvirt0      0.9.12-11 amd64   library for interfacing with different virtualization systems
> 
> 
> container.xml:
> <domain type='lxc'>
>   <name>ns1</name>
>   <memory>524288</memory>
>   <os>
>     <type>exe</type>
>     <init>/sbin/init</init>
>   </os>
>   <vcpu>1</vcpu>
>   <clock offset='utc'/>
>   <on_poweroff>destroy</on_poweroff>
>   <on_reboot>restart</on_reboot>
>   <on_crash>destroy</on_crash>
>   <devices>
>     <emulator>/usr/lib/libvirt/libvirt_lxc</emulator>
>     <filesystem type='mount'>
>       <source dir='/var/lxc/ns1/rootfs'/>
>       <target dir='/'/>
>     </filesystem>
>     <interface type='bridge'>
>       <source bridge='br0'/>
>       <mac address='52:54:00:de:74:06'/>
>     </interface>
>     <console type='pty' />
>   </devices>
> </domain>
> 
> 
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