Use plain squashfs root for selected Anaconda isos

Fedora 41 and later, and RHEL 10 use plain squashfs instead of
compressing an ext4 filesystem.

pkg/distro/fedora/images.go

@@ -403,6 +403,10 @@ func liveInstallerImage(workload workload.Workload,
 
 	img.Filename = t.Filename()
 
+	if common.VersionGreaterThanOrEqual(img.OSVersion, VERSION_ROOTFS_SQUASHFS) {
+		img.RootfsType = manifest.SquashfsRootfs
+	}
+
 	return img, nil
 }
 
@@ -456,8 +460,6 @@ func imageInstallerImage(workload workload.Workload,
 
 	img.ExtraBasePackages = packageSets[installerPkgsKey]
 
-	img.SquashfsCompression = "lz4"
-
 	d := t.arch.distro
 
 	img.Product = d.product
@@ -477,6 +479,11 @@ func imageInstallerImage(workload workload.Workload,
 
 	img.Filename = t.Filename()
 
+	img.SquashfsCompression = "lz4"
+	if common.VersionGreaterThanOrEqual(img.OSVersion, VERSION_ROOTFS_SQUASHFS) {
+		img.RootfsType = manifest.SquashfsRootfs
+	}
+
 	return img, nil
 }
 
@@ -660,8 +667,6 @@ func iotInstallerImage(workload workload.Workload,
 		anaconda.ModuleUsers,
 	}...)
 
-	img.SquashfsCompression = "lz4"
-
 	img.Product = d.product
 	img.Variant = "IoT"
 	img.OSVersion = d.osVersion
@@ -675,6 +680,11 @@ func iotInstallerImage(workload workload.Workload,
 
 	img.Filename = t.Filename()
 
+	img.SquashfsCompression = "lz4"
+	if common.VersionGreaterThanOrEqual(img.OSVersion, VERSION_ROOTFS_SQUASHFS) {
+		img.RootfsType = manifest.SquashfsRootfs
+	}
+
 	return img, nil
 }
 

pkg/distro/fedora/version.go

@@ -2,3 +2,7 @@ package fedora
 
 const VERSION_BRANCHED = "42"
 const VERSION_RAWHIDE = "42"
+
+// Fedora version 41 and later use a plain squashfs rootfs on the iso instead of
+// compressing an ext4 filesystem.
+const VERSION_ROOTFS_SQUASHFS = "41"

pkg/distro/rhel/images.go

@@ -496,6 +496,9 @@ func EdgeInstallerImage(workload workload.Workload,
 	img.Kickstart.Timezone, _ = customizations.GetTimezoneSettings()
 
 	img.SquashfsCompression = "xz"
+	if t.Arch().Distro().Releasever() == "10" {
+		img.RootfsType = manifest.SquashfsRootfs
+	}
 
 	installerConfig, err := t.getDefaultInstallerConfig()
 	if err != nil {
@@ -714,6 +717,9 @@ func ImageInstallerImage(workload workload.Workload,
 	img.AdditionalAnacondaModules = append(img.AdditionalAnacondaModules, anaconda.ModuleUsers)
 
 	img.SquashfsCompression = "xz"
+	if t.Arch().Distro().Releasever() == "10" {
+		img.RootfsType = manifest.SquashfsRootfs
+	}
 
 	// put the kickstart file in the root of the iso
 	img.ISORootKickstart = true

pkg/distro/rhel/rhel10/bare_metal.go

@@ -40,7 +40,7 @@ func mkImageInstallerImgType() *rhel.ImageType {
 		},
 		rhel.ImageInstallerImage,
 		[]string{"build"},
-		[]string{"anaconda-tree", "rootfs-image", "efiboot-tree", "os", "bootiso-tree", "bootiso"},
+		[]string{"anaconda-tree", "efiboot-tree", "os", "bootiso-tree", "bootiso"},
 		[]string{"bootiso"},
 	)