Fixed some race conditions

initramfs/rootfs-extra/init

@@ -108,7 +108,7 @@ wait_for_partnames() {
 
         sleep 1
         i=$((i + 1))
-		log "Still waiting for $@ to populate($i)"
+        log "Still waiting for $@ to populate($i)"
     done
 
     return 1
@@ -174,8 +174,6 @@ resolve_preferred_root() {
     find_part_by_partuuid "$pref_root"
 }
 
-# Decide which root PARTNAME we want for the requested slot.
-# Keep a compatibility fallback for legacy "rootfs" as slot A.
 wanted_root_labels_for_slot() {
     slot="$1"
 
@@ -184,8 +182,7 @@ wanted_root_labels_for_slot() {
             echo "rootfsB"
             ;;
         *)
-            # Try modern rootfsA first, then legacy rootfs
-            echo "rootfsA rootfs"
+            echo "rootfsA"
             ;;
     esac
 }
@@ -232,7 +229,7 @@ PREFERRED_PARTUUID="$(get_cmdline_arg pref_root || true)"
 
 ROOT_DEV="$(resolve_preferred_root "$PREFERRED_PARTUUID" || true)"
 if [ -n "$ROOT_DEV" ]; then
-	log "Using preferred root device: $ROOT_DEV"
+    log "Using preferred root device: $ROOT_DEV"
 fi
 
 if [ -z "$ROOT_DEV" ]; then
@@ -276,6 +273,16 @@ mount_or_panic -t overlay overlay \
     -o "lowerdir=/newroot/etc,upperdir=/newroot/data/etc-overlay/upper,workdir=/newroot/data/etc-overlay/work" \
     /newroot/etc
 
+if [ "$BOOT_PART" = "A" ]; then
+    ALT_PART="$(find_sibling_part_on_same_disk "$ROOT_DEV" rootfsB || true)"
+else
+    ALT_PART="$(find_sibling_part_on_same_disk "$ROOT_DEV" rootfsA || true)"
+fi
+
+if [ -n "$ALT_PART" ]; then
+    ln -sf "$ALT_PART" /dev/mksaltpart
+fi
+
 mount_or_panic --move /dev /newroot/dev
 mount_or_panic --move /proc /newroot/proc
 mount_or_panic --move /sys /newroot/sys