ksud: shrink image before resize

tiann · Jan 30, 2024 · ca960a2 · ca960a2
1 parent cce423a
commit ca960a2
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/userspace/ksud/src/module.rs b/userspace/ksud/src/module.rs
@@ -387,13 +387,24 @@ fn _install_module(zip: &str) -> Result<()> {
         // legacy image, truncate it to new size.
         if std::fs::metadata(modules_img)?.len() < sparse_image_size {
             println!("- Truncate legacy image to new size");
+
+            // shrink it to minimum size
+            check_image(tmp_module_img)?;
+            Command::new("resize2fs")
+                .arg("-M")
+                .arg(tmp_module_img)
+                .stdout(Stdio::piped())
+                .status()?;
+
+            // truncate the file to new size
             OpenOptions::new()
                 .write(true)
                 .open(tmp_module_img)
                 .context("Failed to open ext4 image")?
                 .set_len(sparse_image_size)
                 .context("Failed to truncate ext4 image")?;
 
+            // resize the image to new size
             check_image(tmp_module_img)?;
             Command::new("resize2fs")
                 .arg(tmp_module_img)