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WIP: Redeploy rootfs #107

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WIP: Redeploy rootfs #107

wants to merge 3 commits into from

Commits on Sep 25, 2019

  1. dracut: Remove stray After=basic.target for ignition-fetch.service 

    I had this fix in my WIP ignition-ostree-rootfs stack, and apparently
missed putting it in the split-out change.

This service runs really really early on, it can't be `After=basic.target`.
    @cgwalters
    cgwalters committed Sep 25, 2019
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  2. dracut: Add 31ignition-ostree module 

    I'm working on supporting reprovisioning the rootfs with Ignition
on OSTree based systems like Fedora CoreOS, and this will add
a lot of tricky logic that relates the two.

While we want to support Ignition independent of OSTree and vice
versa, it will be a lot cleaner if we centralize the dracut
logic in one place.

This adds a `31ignition-ostree` module that imports the code
from
https://github.com/coreos/fedora-coreos-config/tree/092f680a5c75324e3efcd5e50374a2c1b5d4b057/overlay.d/05core/usr/lib/dracut/modules.d/40coreos-var

Most notably, this is:

 1) A separate dracut module easily skippable
 2) The units use `ConditionKernelCommandline=ostree` so will be harmless even if included

The units imported here also do this:

```
ConditionPathExists=!/usr/sbin/coreos-mount-var
```

So this change can be safely merged, built and shipped as an RPM,
then we can drop the FCOS config bits and enable it later.

Tested both ways (inert and enabled).

And to clarify, the later ignition-ostree-rootfs stuff will land
in this same dracut module.
    @cgwalters
    cgwalters committed Sep 25, 2019
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  3. wip 31ignition-ostree 

    For redeploying the rootfs
    @cgwalters
    cgwalters committed Sep 25, 2019
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