[OS-BUILD PATCH] [redhat] kernel.spec: increase initramfs reservation from 20MB to 40MB

[Patrick Talbert (via Email Bridge)]

From: Patrick Talbert

[redhat] kernel.spec: increase initramfs reservation from 20MB to 40MB

When packaging the kernel we create a dummy 20MB file in the rpm build
root so that installation requires at least this much free space in
/boot. Unfortunately, we still get reports of boot failures due to
dracut having failed to write the postinstall generated initramfs to
/boot.

We did a simple analysis of the systems we have access to and found the
average initramfs size to be a little over 30MB. So let's double the
reservation file size to 40MB. That should protect more uses and
hopefully will not create a burden on others.

Signed-off-by: Patrick Talbert

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
@@ -2275,10 +2275,10 @@ BuildKernel() {
     install -m 644 System.map $RPM_BUILD_ROOT/boot/System.map-$KernelVer
     install -m 644 System.map $RPM_BUILD_ROOT/lib/modules/$KernelVer/System.map

-    %{log_msg "Create initrfamfs"}
+    %{log_msg "Reserving 40MB in boot for initramfs"}
     # We estimate the size of the initramfs because rpm needs to take this size
     # into consideration when performing disk space calculations. (See bz #530778)
-    dd if=/dev/zero of=$RPM_BUILD_ROOT/boot/initramfs-$KernelVer.img bs=1M count=20
+    dd if=/dev/zero of=$RPM_BUILD_ROOT/boot/initramfs-$KernelVer.img bs=1M count=40

if [ -f arch/$Arch/boot/zImage.stub ]; then
       %{log_msg "Copy zImage.stub to RPM_BUILD_ROOT"}

--
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/3062