fix: probe active block device before vg import cycle

When the target VG is already active (e.g. the running system's own
VG), probe the block device directly instead of going through the
full import/activate/open/cleanup sequence.

core/src/disk/main.rs

@@ -409,6 +409,18 @@ pub async fn mount_all_fs<P: AsRef<Path>>(
 /// filesystem type. Returns `None` if probing fails (e.g. LV doesn't exist).
 #[instrument(skip_all)]
 pub async fn probe_package_data_fs(guid: &str) -> Result<Option<String>, Error> {
+    // If the target block device is already accessible (e.g. this is the
+    // currently active system VG), probe it directly without any
+    // import/activate/open/cleanup steps.
+    let blockdev_path = if !guid.ends_with("_UNENC") {
+        PathBuf::from(format!("/dev/mapper/{guid}_package-data"))
+    } else {
+        Path::new("/dev").join(guid).join("package-data")
+    };
+    if tokio::fs::metadata(&blockdev_path).await.is_ok() {
+        return detect_filesystem(&blockdev_path).await.map(Some);
+    }
+
     // Import and activate the VG
     match Command::new("vgimport")
         .arg(guid)