diff --git a/stages/org.osbuild.erofs b/stages/org.osbuild.erofs
new file mode 100755
index 00000000..f74dabdc
--- /dev/null
+++ b/stages/org.osbuild.erofs
@@ -0,0 +1,101 @@
+#!/usr/bin/python3
+"""
+Create a file containing an erofs filesystem named `filename`.
+
+See https://en.wikipedia.org/wiki/EROFS for details about the
+filesystem.
+
+Buildhost commands used: `mkfs.erofs`
+"""
+
+import os
+import subprocess
+import sys
+
+import osbuild.api
+
+SCHEMA_2 = """
+"options": {
+  "additionalProperties": false,
+  "required": ["filename"],
+  "properties": {
+    "filename": {
+      "description": "Filename for the output",
+      "type": "string"
+    },
+    "compression": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["method"],
+      "properties": {
+        "method": {
+          "description": "Compression method",
+          "enum": ["lz4", "lz4hc", "lzma"]
+        },
+        "level": {
+          "description": "Compression level. Note that different methods support different levels. See mkfs.erofs(1) for more details",
+          "type": "number"
+        }
+      }
+    },
+    "options": {
+      "description": "Extended options for the filesystem, see mkfs.erofs(1)",
+      "type": "array",
+      "minItems": 1,
+      "items:": {
+        "enum": [
+          "all-fragments",
+          "dedupe",
+          "force-inode-compact",
+          "force-inode-extended",
+          "force-inode-blockmap",
+          "force-chunk-indexes",
+          "fragments",
+          "noinline_data",
+          "ztailpacking"
+        ]
+      }
+    }
+  }
+},
+"inputs": {
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["tree"],
+  "properties": {
+    "tree": {
+      "type": "object",
+      "additionalProperties": true
+    }
+  }
+}
+"""
+
+
+def main(inputs, output_dir, options):
+    source = inputs["tree"]["path"]
+    filename = options["filename"].lstrip("/")
+    compression = options.get("compression")
+
+    target = os.path.join(output_dir, filename)
+
+    cmd = ["mkfs.erofs", target, source]
+
+    if compression:
+        method = compression["method"]
+        if compression.get("level"):
+            method += f",{compression['level']}"
+        cmd += ["-z", method]
+
+    if options:
+        cmd += ["-E", ",".join(options)]
+
+    subprocess.run(cmd, check=True)
+
+    return 0
+
+
+if __name__ == '__main__':
+    args = osbuild.api.arguments()
+    r = main(args["inputs"], args["tree"], args["options"])
+    sys.exit(r)