New subject: [OS-BUILD PATCH] The rescue kernel can only be used to boot a system normally if

17 Jun 2025

From: Gordon Messmer gordon.messmer@gmail.com
The rescue kernel can only be used to boot a system normally if
the corresponding kernel and modules are still available.  Once
they are removed, functionality is significantly reduced.
When a kernel is removed, check the rescue kernel and remove it
if it matches the kernel to be removed.
The currently running kernel is assumed good, so build a rescue
kernel based on this version as long as it is still installed.

diff --git a/redhat/kernel.spec.template b/redhat/kernel.spec.template
index blahblah..blahblah 100644
--- a/redhat/kernel.spec.template
+++ b/redhat/kernel.spec.template
@@ -3846,6 +3846,9 @@ touch %{_localstatedir}/lib/rpm-state/%{name}/installing_core_%{KVERREL}%{?-v:+%
 %define kernel_variant_preun(v:u:) \
 %{expand:%%preun %{?-v:%{-v*}-}%{!?-u*:core}%{?-u*:uki-%{-u*}}}\
 /bin/kernel-install remove %{KVERREL}%{?-v:+%{-v*}} || exit $?\
+read -r MACHINE_ID < /etc/machine-id && /bin/cmp /boot/vmlinuz-0-rescue-${MACHINE_ID} boot/vmlinuz-%{KVERREL}%{?-v:+%{-v*}} &&\
+  /bin/rm /boot/vmlinuz-0-rescue-${MACHINE_ID} /boot/initramfs-0-rescue-${MACHINE_ID}.img &&\
+  [ -e /boot/vmlinuz-$(uname -r) ] && kernel-install add $(uname -r) /lib/modules/$(uname -r)/vmlinuz\
 %if !%{with_automotive}\
 if [ -x %{_sbindir}/weak-modules ]\
 then\
--
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/3960

    