See this forum post:
https://forums.opensuse.org/showthread.php/559581-Can-t-SSH-in-to-Kubic-after-flashing-(Raspberry-Pi)?p=3064623#post3064623

On a fresh installation of Kubic for Raspberry Pi from the images at
https://download.opensuse.org/repositories/devel:/kubic:/images/openSUSE_Factory_ARM/
(specifically
https://download.opensuse.org/repositories/devel:/kubic:/images/openSUSE_Factory_ARM/openSUSE-MicroOS.aarch64-16.0.0-Kubic-kubeadm-RaspberryPi-Build138.105.raw.xz),
I can't SSH in as root, because the subvolume for the `/root` directory is not
mounting with appropriate permissions, cf. these messages in the log:

```
Sep 09 17:24:07 localhost sshd[2360]: Authentication refused: bad ownership or
modes for directory /root
```

I'm not sure what those bad modes are, but I know the directory comes up with
write permissions for group and other when I mount it on another machine.