systemd-nspawn: where is my container root?

[rymg19@xxxxxxxxx (Ryan Gonzalez)]

It's probably a private mountpoint, meaning that no one outside of 
systemd-nspawn and it's children can see it. If you need to access the 
data, you can use machinectl: 
https://www.freedesktop.org/software/systemd/man/machinectl.html


On June 23, 2018 8:49:01 AM Nikolaus Rath <Nikolaus at rath.org> wrote:

> Hi,
>
> I have just started using machinectl and systemd-nspawn and like it a
> lot. However, there is one thing that I could not figure out from the
> documentation and not knowing it makes me feel uncomfortable: where
> exactly is the root filesystem for the container mounted, and how can I
> access it from the host?
>
> I have downloaded a .qcow2 image with machinectl fetch-raw. Since the
> manpage encouraged it, I also put /var/lib/machines on a btrfs
> filesystem. However, even when I am logged into the container, the only
> entries in there are two .raw files. "mount" also does not show me any
> new mountpoints.
>
> Where and how is the root filesystem mounted, and how can I access it
> *from the host*? I would have expected to see a new mountpoint, or a new
> btrfs subvolume..
>
> Thanks!
> -Nikolaus
>
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