From c201271879092710d0b673a5a03e78c86869e009 Mon Sep 17 00:00:00 2001
From: "Brian C. Lane" <bcl@redhat.com>
Date: Fri, 20 Dec 2024 09:29:37 -0800
Subject: [PATCH] rhel: On RHEL10 use erofs to compress the root filesystem of
 the Anaconda ISO

---
 pkg/distro/rhel/images.go | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/pkg/distro/rhel/images.go b/pkg/distro/rhel/images.go
index e6fb7bb9b8..106d03d8c5 100644
--- a/pkg/distro/rhel/images.go
+++ b/pkg/distro/rhel/images.go
@@ -495,9 +495,12 @@ func EdgeInstallerImage(workload workload.Workload,
 	// kickstart though kickstart does support setting them
 	img.Kickstart.Timezone, _ = customizations.GetTimezoneSettings()
 
-	img.RootfsCompression = "xz"
 	if t.Arch().Distro().Releasever() == "10" {
-		img.RootfsType = manifest.SquashfsRootfs
+		// On RHEL10 use erofs and zstd compression for the iso root filesystem
+		img.RootfsCompression = "zstd"
+		img.RootfsType = manifest.ErofsRootfs
+	} else {
+		img.RootfsCompression = "xz"
 	}
 
 	installerConfig, err := t.getDefaultInstallerConfig()
@@ -716,9 +719,12 @@ func ImageInstallerImage(workload workload.Workload,
 	}
 	img.AdditionalAnacondaModules = append(img.AdditionalAnacondaModules, anaconda.ModuleUsers)
 
-	img.RootfsCompression = "xz"
 	if t.Arch().Distro().Releasever() == "10" {
-		img.RootfsType = manifest.SquashfsRootfs
+		// On RHEL10 use erofs and zstd compression for the iso root filesystem
+		img.RootfsCompression = "zstd"
+		img.RootfsType = manifest.ErofsRootfs
+	} else {
+		img.RootfsCompression = "xz"
 	}
 
 	// put the kickstart file in the root of the iso