Re: Running an ostree deployment in a container

[Philip Withnall <philip tecnocode co uk>]

On Tue, 2018-05-01 at 09:38 +0700, Arnaud Rebillout wrote:
> On 04/27/2018 10:11 PM, Philip Withnall wrote:
> > You can use nspawn’s --pivot-root argument to simulate the OSTree
> > pivot
> > root done during a normal boot:
> >
> > sudo systemd-nspawn -i ~/image.raw \
> >    --bind +/sysroot/ostree/deploy/$os/var:/var \
> >    --pivot-sysroot /ostree/deploy/$os/deploy/$checksum.0
> >
> > See my earlier e-mail on it here:
> >
> > https://mail.gnome.org/archives/ostree-list/2017-February/msg00007.
> > html
>
> Thanks, indeed I've seen this discussion, and the command you mention
> here is even documented in `man systemd-nspawn`. What I found is that
> it
> works for a raw image (ie. `-i ~/image.raw`), however it doesn't work
> with a directory (ie. `-D ~/image/`). systemd-nspawn complains with:
>
>     Directory /usr/src/deployment doesn't look like an OS root
> directory
> (os-release file is missing). Refusing.
>
> It looks like in this case systemd-nspawn checks the OS root dir
> before
> pivot-rooting, probably looking for the file /etc/os-release. And
> before
> pivot-rooting there's no such file. So it might just be something to
> fix
> in systemd-nspawn. Do you remember using `systemd-nspawn -D` (ie.
> --directory), and seeing it working? Or was it outside of your use-
> case?

That was outside of my use case: I was only dealing with raw images.
Looks like this needs fixing in systemd-nspawn indeed.

Philip

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