Comment 2 for bug 1663725

There are a lot of custom udev rules

CustomUdevRuleFiles: main_disk-part1.rules.rules third_disk.rules.rules md0.rules.rules second_disk-part1.rules.rules second_disk.rules.rules third_disk-part1.rules.rules main_disk-part2.rules.rules fourth_disk.rules.rules fourth_disk-part1.rules.rules main_disk.rules.rules

Can you attach them?

Are all of those included in the initramfs as well? (check with e.g. lsinitramfs)

The md-name and md-uuid symlinks are generated by the udev rules shipped by the mdadm package.