diff --git a/src/cmd-buildextend-live b/src/cmd-buildextend-live
index 486fd26545..73350ad8b9 100755
--- a/src/cmd-buildextend-live
+++ b/src/cmd-buildextend-live
@@ -18,7 +18,7 @@ import time
 
 sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
 from cosalib.builds import Builds
-from cosalib.cmdlib import run_verbose, sha256sum_file, generate_image_json
+from cosalib.cmdlib import run_verbose, sha256sum_file, extract_image_json
 from cosalib.cmdlib import import_ostree_commit, get_basearch, ensure_glob
 from cosalib.meta import GenericBuildMeta
 
@@ -46,9 +46,6 @@ if not args.build:
     args.build = builds.get_latest()
 print(f"Targeting build: {args.build}")
 
-image_json = generate_image_json('src/config/image.yaml')
-squashfs_compression = 'lz4' if args.fast else image_json['squashfs-compression']
-
 srcdir_prefix = "src/config/live/"
 
 if not os.path.isdir(srcdir_prefix):
@@ -58,6 +55,13 @@ workdir = os.path.abspath(os.getcwd())
 builddir = builds.get_build_dir(args.build)
 buildmeta_path = os.path.join(builddir, 'meta.json')
 buildmeta = GenericBuildMeta(workdir=workdir, build=args.build)
+repo = os.path.join(workdir, 'tmp/repo')
+
+# Grab the commit hash for this build
+buildmeta_commit = buildmeta['ostree-commit']
+
+image_json = extract_image_json(repo, buildmeta_commit)
+squashfs_compression = 'lz4' if args.fast else image_json['squashfs-compression']
 
 base_name = buildmeta['name']
 if base_name == "rhcos" and args.fast:
@@ -71,12 +75,6 @@ if os.path.exists(build_semaphore):
     raise Exception(
         f"{build_semaphore} exists: another process is building live")
 
-
-# Grab the commit hash for this build
-buildmeta_commit = buildmeta['ostree-commit']
-
-repo = os.path.join(workdir, 'tmp/repo')
-
 # Don't run if it's already been done, unless forced
 if 'live-iso' in buildmeta['images'] and not args.force:
     print(f"'live' has already been built for {args.build}. Skipping.")
diff --git a/src/cmd-buildextend-metal b/src/cmd-buildextend-metal
index 87f6dac3cd..5be7b2ca96 100755
--- a/src/cmd-buildextend-metal
+++ b/src/cmd-buildextend-metal
@@ -118,6 +118,9 @@ ostree_repo=${tmprepo}
 # Ensure that we have the cached unpacked commit
 import_ostree_commit_for_build "${build}"
 
+image_json=image.json
+extract_image_json "${tmprepo}" "${commit}" > "${image_json}"
+
 image_format=raw
 if [[ $image_type == qemu ]]; then
     image_format=qcow2
diff --git a/src/cmdlib.sh b/src/cmdlib.sh
index 267f822bda..d5cad5e5c1 100755
--- a/src/cmdlib.sh
+++ b/src/cmdlib.sh
@@ -394,6 +394,13 @@ EOF
         done
     fi
 
+    local imagejsondir="${tmp_overridesdir}/imagejson"
+    export ostree_image_json="/usr/share/coreos-assembler/image.json"
+    mkdir -p "${imagejsondir}/usr/share/coreos-assembler/"
+    cp "${image_json}" "${imagejsondir}${ostree_image_json}"
+    commit_overlay cosa-image-json "${imagejsondir}"
+    layers="${layers} cosa-image-json"
+
     local_overrides_lockfile="${tmp_overridesdir}/local-overrides.json"
     if [ -n "${with_cosa_overrides}" ] && [[ -n $(ls "${overridesdir}/rpm/"*.rpm 2> /dev/null) ]]; then
         (cd "${overridesdir}"/rpm && rm -rf .repodata && createrepo_c .)
@@ -874,6 +881,7 @@ builds.bump_timestamp()
 print('Build ${buildid} was inserted ${arch:+for $arch}')")
 }
 
+# Prepare the image.json as part of an ostree image build
 write_image_json() {
     local srcfile=$1; shift
     local outfile=$1; shift
@@ -884,6 +892,19 @@ from cosalib import cmdlib
 cmdlib.write_image_json('${srcfile}', '${outfile}')")
 }
 
+# Fetch the image.json from the ostree commit to stdout.
+# Should be used by disk image builds.
+extract_image_json() {
+    local repo=$1; shift
+    local commit=$1; shift
+    (python3 -c "
+import sys, json
+sys.path.insert(0, '${DIR}')
+from cosalib import cmdlib
+json.dump(cmdlib.extract_image_json('${repo}', '${commit}'), sys.stdout, sort_keys=True)
+")
+}
+
 # Shell wrapper for the Python import_ostree_commit
 import_ostree_commit_for_build() {
     local buildid=$1; shift
diff --git a/src/cosalib/cmdlib.py b/src/cosalib/cmdlib.py
index 33e605d2cd..e8bbd2ea32 100644
--- a/src/cosalib/cmdlib.py
+++ b/src/cosalib/cmdlib.py
@@ -350,6 +350,13 @@ def cmdlib_sh(script):
     '''])
 
 
+# Should be used by disk image builds to extract the image.json from the
+# ostree commit.
+def extract_image_json(repo, commit):
+    out = subprocess.check_output(['ostree', f'--repo={repo}', 'cat', commit, '/usr/share/coreos-assembler/image.json'])
+    return json.loads(out)
+
+
 def generate_image_json(srcfile):
     r = yaml.safe_load(open("/usr/lib/coreos-assembler/image-default.yaml"))
     for k, v in flatten_image_yaml(srcfile).items():
diff --git a/src/cosalib/ova.py b/src/cosalib/ova.py
index 6949534da2..3d7f2c29e5 100644
--- a/src/cosalib/ova.py
+++ b/src/cosalib/ova.py
@@ -10,7 +10,7 @@
 sys.path.insert(0, f"{cosa_dir}/cosalib")
 sys.path.insert(0, cosa_dir)
 
-from cosalib.cmdlib import generate_image_json, image_info
+from cosalib.cmdlib import extract_image_json, image_info
 from cosalib.qemuvariants import QemuVariantImage
 
 
@@ -86,7 +86,7 @@ def generate_ovf_parameters(self, vmdk, cpu=2, memory=4096):
         Returns a dictionary with the parameters needed to create an OVF file
         based on the qemu, vmdk, image.yaml, and info from the build metadata
         """
-        image_json = generate_image_json('src/config/image.yaml')
+        image_json = extract_image_json(self._workdir, self.meta['ostree-commit'])
 
         system_type = 'vmx-{}'.format(image_json['vmware-hw-version'])
         os_type = image_json['vmware-os-type']