On Mon, Jun 10, 2013 at 09:29:32AM +0400, свящ. Георгий Гольцов wrote: > On Mon, Jun 10, 2013 at 09:07:08AM +0800, Gao feng wrote: > > 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 for the quick reply. I was surprised too. I didn't post /proc/mounts to container. libvirt_lxc did it for me. I read http://libvirt.org/drvlxc.html about Filesystem mounts: " In the absence of any explicit configuration, the container will inherit the host OS filesystem mounts. A number of mount points will be made read only, or re-mounted with new instances to provide container specific data. The following special mounts are setup by libvirt * /dev a new "tmpfs" pre-populated with authorized device nodes * /dev/pts a new private "devpts" instance for console devices * /sys the host "sysfs" instance remounted read-only * /proc a new instance of the "proc" filesystem * /proc/sys the host "/proc/sys" bind-mounted read-only * /sys/fs/selinux the host "selinux" instance remounted read-only * /sys/fs/cgroup/NNNN the host cgroups controllers bind-mounted to * only expose the sub-tree associated with the container * /proc/meminfo a FUSE backed file reflecting memory limits of the * container " Can I disable this behavior? How do I specify an explicit configuration? Thanks. my container.xml: (The entire xml file is shown in the my original post) > ... > <devices> > <emulator>/usr/lib/libvirt/libvirt_lxc</emulator> > <filesystem type='mount'> > <source dir='/var/lxc/ns1/rootfs'/> > <target dir='/'/> > </filesystem> > ... > </device> > ... > > > > > Thanks. > > > > > > root@host:~# uname -a > > > Linux host 3.2.0-4-amd64 #1 SMP Debian 3.2.41-2+deb7u2 x86_64 GNU/Linux > > > > > > root@host:~# cat /etc/os-release > > > PRETTY_NAME="Debian GNU/Linux 7.0 (wheezy)" > > > ... > > > > > > root@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> > > > > > > > > > _______________________________________________ > > > libvirt-users mailing list > > > libvirt-users@xxxxxxxxxx > > > https://www.redhat.com/mailman/listinfo/libvirt-users > > > > > _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
