SetUpCdromSourceTask: Allow setup source to all mountable partitions

[slayercat]

see also: #3594

[pep8speaks]

Hello @slayercat! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2021-09-12 10:15:28 UTC

[slayercat]

As discuss in #3594 , we made some code to prove our idea.

This patch has been tested offline with CentOS-Stream-8-aarch64-20210902-dvd1. (basicly)

With make an efi (FAT32) partition, and copies all files in the ISO file to it, It'll boot and install in a aarch64 machine.

You may want to review these log files:

tmp.zip

[jkonecny12]

Hi thanks for the PR, however, switching CDRom source from Optical Media to mountable device would change behavior of the CDRom source. In that case we could discover completely different sources for inst.cdrom. For this reason we should instead follow solution that we would add a new source which would re-use existing mount from a Dracut. However, even in that case we had to make sure that this do not break some use-cases.

[github-actions]

This PR is stale because it has been open 60 days with no activity.
Remove stale label or comment or this will be closed in 30 days.

[jkonecny12]

Just now I'm working on a alternative solution to this. Hopefully, I'll be able to create the PR soon. Closing this PR for now.