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Description of problem:
Our customer was using Lorax in the past, and kept it for RHEL 8, despite being deprecated in favor of osbuild-composer.
But the latest backend does not provide a "live-iso" image type as the former backend did.

RHEL 9 still provide lorax-lmc-novirt, without the KS templates with (many) tricks related to a live desktop session (which were stored in /usr/share/doc/lorax/rhel-livemedia.ks).
Using the RHEL 8 one allows me to create a RHEL 9 live image, but some hacks didn't work.

One of the major customer expectations is to have the squashfs (containing the standard rootfs customized by the blueprint != anaconda installer) loaded into RAM (allowing the USB to be unplugged). Not sure it should be the default (as it can be enabled with rd.live.ram=1).

Please see these upstream issues that are closely related:
 * Live images for PXE boot output format #472 - https://github.com/osbuild/osbuild/issues/472
 * https://github.com/osbuild/osbuild/pull/430

Version-Release number of selected component (if applicable):
osbuild-composer-76-2.el9_2.2.x86_64

Doable with lorax-lmc-novirt and livemedia.ks

[root@localhost ~]# uname -a
Linux localhost.localdomain 5.14.0-284.11.1.el9_2.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Apr 12 10:45:03 EDT 2023 x86_64 x86_64 x86_64 GNU/Linux

[root@localhost ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux release 9.2 (Plow)

[root@localhost ~]# lsblk
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
loop0         7:0    0  1.6G  1 loop 
loop1         7:1    0  7.8G  1 loop 
├─live-rw   253:0    0  7.8G  0 dm   /
└─live-base 253:1    0  7.8G  1 dm   
loop2         7:2    0   32G  0 loop 
└─live-rw   253:0    0  7.8G  0 dm   /
sr0          11:0    1  1.6G  0 rom  /run/initramfs/live

(In reply to Christophe Besson from comment #0)

> RHEL 9 still provide lorax-lmc-novirt, without the KS templates with (many)
> tricks related to a live desktop session (which were stored in
> /usr/share/doc/lorax/rhel-livemedia.ks).

FYI there is still an example kickstart, it was renamed to /usr/share/doc/lorax/livemedia.ks, and it does work on RHEL 9.2 just fine.

*** This bug has been marked as a duplicate of bug 1975829 ***