[systemd-devel] systemd-nspawn: where is my container root?

[Nikolaus Rath]

Hi,

That makes sense.. but is there any way to find out *globally* what
devices are mounted in *any* namespace? 

Best,
-Nikolaus

On Jun 23 2018, Ryan Gonzalez <rymg19 at gmail.com> wrote:
> 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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