[lxc-users] Can we run a container from ramfs?

[Dwight Engen]

On Sat, 14 Dec 2013 15:18:51 +0800
Qiang Huang <h.huangqiang at huawei.com> wrote:

> Hi guys,
> 
> I was trying to run a container from ramfs, to root filesystem is
> rootfs(ramfs), the template is put onto a mounted disk whose fs is

I don't know about ramfs, but I use tmpfs mounted on $LXC_PATH all the
time.

> ext3, and I got this error(I'll skip my config and version and os
> and so on, I think they are not keys):
> ...
> lxc-start 1386999058.944 DEBUG    lxc_conf - mountpoint for old
> rootfs is '/usr/local/lib/lxc/rootfs/lxc_putold' lxc-start
> 1386999058.944 ERROR    lxc_conf - Invalid argument - pivot_root
> syscall failed lxc-start 1386999058.944 ERROR    lxc_conf - failed to
> setup pivot root lxc-start 1386999058.944 ERROR    lxc_conf - failed
> to set rootfs for 'hq91' lxc-start 1386999058.944 ERROR    lxc_start
> - failed to setup the container lxc-start 1386999058.944 ERROR
> lxc_sync - invalid sequence number 1. expected 2 lxc-start
> 1386999058.952 ERROR    lxc_start - failed to spawn 'hq91'
> 
> I dug and figured out that pivot_root has some limitations with ramfs,
> So is it possible to run a container from ramfs? And how can we do
> that?
> 
> Any comments are appreciated.
> 
> 
> 
> _______________________________________________
> lxc-users mailing list
> lxc-users at lists.linuxcontainers.org
> http://lists.linuxcontainers.org/listinfo/lxc-users