RHEL-35885: Fix compatibility with bootc systems
lib: Ensure we don't find bind mounts for device target
There's comment here that --source somehow avoids bind
mounts, but that appears not to be the case in my
testing. I think we just happened to be lucky before
now with the --first picking the value we wanted.
Instead of using --first and hoping for the best,
parse the mounts and skip ones which are bind mounts
explicitly.
Signed-off-by: Colin Walters walters@verbum.org
dracut: Disable ostree-prepare-root
In some images such as the recent fedora/rhel bootc base image, the ostree dracut module is statically enabled: https://gitlab.com/fedora/bootc/base-images/-/blob/40df0eb3827763039e4d17264968e37f850b70e5/tier-0/initramfs.yaml#L9
And also recently, we changed the ostree systemd unit to enter emergency.target if it fails in: https://github.com/ostreedev/ostree/pull/3220/commits/05b3b662756def30026fc722d0832a24a33d9803
These two things combine mean we'll fail before kdump gets a chance to run.
For our use case we don't need ostree in the initrd.
I tried to override this with --omit=ostree in our dracut
invocation, but that causes an error (dracut doesn't let the
cmdline override static config).
For now, let's just mask the service in our initrd.