General
-------
 - DriverDisk work with ISO images or RPMs
      https://www.marcanoonline.com/post/2016/07/red-hat-enterprise-linux-and-centos-7-driver-disk/
 - Besides providing drivers to installer, it is also necessary to install it, e.g. in %post section.

RPM
---
 - RPM should contain the driver for installer kernel
 - RPM should provie 'kernel-modules' with appropriate version, e.g.
	kernel-modules >= 3.10.0-327.el7.<arch>
 - Collection of storage drivers is available at http://elrepo.org
	https://elrepo.org/linux/elrepo/el8/x86_64/

ISO (if more than 1 driver is required)
---
  rhhd3									# File, content is: Driver Update Disk version 3
  rpms
    x86_64
	kmod-arcmsr-1.40.00.05-20180309.1.el8_0.elrepo.x86_64.rpm	# RPM with drivers (see above)
	repodata							# Generated with createrepo/createrepo_c
	    repomd.xml
	    ...