[OE-core] [PATCH 2/2] wic: isoimage-isohybrid: debloat image of redundant rootfs

[Ioan-Adrian Ratiu]

There's no reason to have that rootfs.img filesystem in the image:
it's not used for anything because both the EFI and legacy boot paths
use the /initrd which contains the same contents as the rootfs.img,
only compressed. It was probably forgotten in there :)

My iso went down from 224 to 94 mb.

Tested using UEFI/legacy boots on CD-roms, usb dongle and qemu VM's.

Signed-off-by: Ioan-Adrian Ratiu <adrian.ratiu at ni.com>
---
 scripts/lib/wic/canned-wks/mkhybridiso.wks    |  2 +-
 .../wic/plugins/source/isoimage-isohybrid.py  | 27 +------------------
 2 files changed, 2 insertions(+), 27 deletions(-)

diff --git a/scripts/lib/wic/canned-wks/mkhybridiso.wks b/scripts/lib/wic/canned-wks/mkhybridiso.wks
index 9d34e9b477..48c5ac4791 100644
--- a/scripts/lib/wic/canned-wks/mkhybridiso.wks
+++ b/scripts/lib/wic/canned-wks/mkhybridiso.wks
@@ -2,6 +2,6 @@
 # long-description: Creates an EFI and legacy bootable hybrid ISO image
 # which can be used on optical media as well as USB media.
 
-part /boot --source isoimage-isohybrid --sourceparams="loader=grub-efi,image_name=HYBRID_ISO_IMG" --ondisk cd --label HYBRIDISO --fstype=ext4
+part /boot --source isoimage-isohybrid --sourceparams="loader=grub-efi,image_name=HYBRID_ISO_IMG" --ondisk cd --label HYBRIDISO
 
 bootloader  --timeout=15  --append=""
diff --git a/scripts/lib/wic/plugins/source/isoimage-isohybrid.py b/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
index b119c9c2fd..0d4f50d1f7 100644
--- a/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
+++ b/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
@@ -47,7 +47,7 @@ class IsoImagePlugin(SourcePlugin):
 
     Example kickstart file:
     part /boot --source isoimage-isohybrid --sourceparams="loader=grub-efi, \\
-    image_name= IsoImage" --ondisk cd --label LIVECD --fstype=ext2
+    image_name= IsoImage" --ondisk cd --label LIVECD
     bootloader  --timeout=10  --append=" "
 
     In --sourceparams "loader" specifies the bootloader used for booting in EFI
@@ -253,33 +253,8 @@ class IsoImagePlugin(SourcePlugin):
             raise WicError("Couldn't find IMAGE_ROOTFS, exiting.")
 
         part.rootfs_dir = rootfs_dir
-
-        # Prepare rootfs.img
         deploy_dir = get_bitbake_var("DEPLOY_DIR_IMAGE")
         img_iso_dir = get_bitbake_var("ISODIR")
-        rootfs_img = "%s/rootfs.img" % img_iso_dir
-        if not os.path.isfile(rootfs_img):
-            # check if rootfs.img is in deploydir
-            deploy_dir = get_bitbake_var("DEPLOY_DIR_IMAGE")
-            image_name = get_bitbake_var("IMAGE_LINK_NAME")
-            rootfs_img = "%s/%s.%s" \
-                % (deploy_dir, image_name, part.fstype)
-
-        if not os.path.isfile(rootfs_img):
-            # create image file with type specified by --fstype
-            # which contains rootfs
-            du_cmd = "du -bks %s" % rootfs_dir
-            out = exec_cmd(du_cmd)
-            part.size = int(out.split()[0])
-            part.extra_space = 0
-            part.overhead_factor = 1.2
-            part.prepare_rootfs(cr_workdir, oe_builddir, rootfs_dir, \
-                                native_sysroot)
-            rootfs_img = part.source_file
-
-        install_cmd = "install -m 0644 %s %s/rootfs.img" \
-            % (rootfs_img, isodir)
-        exec_cmd(install_cmd)
 
         # Remove the temporary file created by part.prepare_rootfs()
         if os.path.isfile(part.source_file):
-- 
2.18.0