fix(overlayfs): allow hostonly and nfs support

[LaszloGombos]

Check for overlay kernel module support.

Execute mount-overlayfs later in the boot process. Without this change dracut -a "overlayfs nfs" does not work as expected.

Checklist

• I have tested it locally
• I have reviewed and updated any documentation if relevant
• I am providing new code and test(s) for it

Fixes #

[aafeijoo-suse]

You need to fix the shfmt format:

https://github.com/dracutdevs/dracut/actions/runs/4350868266/jobs/7601984774?pr=2269

The "allow hostonly" part is ok, but it has nothing to do with "Execute mount-overlayfs later in the boot process as well.". You should split that into another commit and give the proper reason for that (why does not it work as expected?).

[LaszloGombos]

Thank you for all the reviews @aafeijoo-suse . Without your reviews the project would be stalled.

You need to fix the shfmt format:

Sorry I missed it.

The "allow hostonly" part is ok, but it has nothing to do with "Execute mount-overlayfs later in the boot process as well.". > You should split that into another commit and give the proper reason for that (why does not it work as expected?).

Split the changes into two commit.

give the proper reason for that (why does not it work as expected?).

I improved the test case to test for this scenario, so now everybody can reproduce and understand the failure and also this test case would guard for future regression of this use-case.

[aafeijoo-suse]

I improved the test case to test for this scenario, so now everybody can reproduce and understand the failure and also this test case would guard for future regression of this use-case.

Ok, thanks!

[stale]

This issue is being marked as stale because it has not had any recent activity. It will be closed if no further activity occurs. If this is still an issue in the latest release of Dracut and you would like to keep it open please comment on this issue within the next 7 days. Thank you for your contributions.