commit 46e0ea2ce17a04968a398b8ffb7f4341f55a6a84
author Jaegeuk Kim <jaegeuk@google.com> Thu May 20 23:13:59 2021 -0700
committer Jaegeuk Kim <jaegeuk@google.com> Tue May 25 14:50:04 2021 -0700
tree 9344d8ae9d15a0c3efcb4e2a7ae48a4916ffb934
parent 3ff3f1088d264510ba081623c4215a7bc205675d

Enable --readonly for system compression

This option is to reduce system partition size.

Bug: 171942852
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
Change-Id: Idc849cfce33ac0badb2b9b7953bb821c46a24472

tools/releasetools/build_image.py

diff --git a/tools/releasetools/build_image.py b/tools/releasetools/build_image.py
index 13c5363..c1e43b2 100755
--- a/tools/releasetools/build_image.py
+++ b/tools/releasetools/build_image.py
@@ -357,6 +357,7 @@
     if (needs_compress or prop_dict.get("system_fs_compress") == "true"):
       build_command.append("--compression")
     if (prop_dict.get("system_fs_compress") == "true"):
+      build_command.append("--readonly")
       build_command.append("--sldc")
       if (prop_dict.get("system_f2fs_sldc_flags") == None):
         build_command.append(str(0))