fix(partitioning,network): swapon idempotency, DNS search domains, tune2fs changed_when

roles/partitioning/tasks/_create_filesystems.yml

@@ -25,7 +25,7 @@
         tune2fs -O "^orphan_file,^metadata_csum_seed"
         "{{ install_drive }}{{ partitioning_boot_fs_partition_suffix }}"
       register: partitioning_boot_ext4_tune_result
-      changed_when: partitioning_boot_ext4_tune_result.rc == 0
+      changed_when: false
 
     - name: Create swap filesystem
       when:

roles/partitioning/tasks/_mount.yml

@@ -1,6 +1,9 @@
 ---
 - name: Mount filesystems
   block:
+    # CIS mode: mount all paths (separate partitions for /home, /var, etc.)
+    # Non-CIS btrfs: only mount subvolume paths (/home, /var/log, /var/cache/pacman/pkg)
+    # Non-CIS LVM: skip CIS-only paths (/home, /var, /var/log, /var/log/audit, /var/cache/pacman/pkg)
     - name: Mount filesystems and subvolumes
       when:
         - >-
@@ -121,4 +124,6 @@
           {{ 'swapon /mnt/swap/swapfile' if system_cfg.filesystem == 'btrfs' else 'swapon -U ' + partitioning_uuid_swap[0] }}
       ansible.builtin.command: "{{ partitioning_swap_cmd }}"
       register: partitioning_swap_activate_result
+      # swapon returns 255 if swap is already active
+      failed_when: partitioning_swap_activate_result.rc not in [0, 255]
       changed_when: partitioning_swap_activate_result.rc == 0