V8.00.000.2025.06.17

Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
2025-06-29 16:56:46 +02:00
parent f6c1fcb448
commit bfbe9fa868
3 changed files with 61 additions and 58 deletions
--- a/func/3280_mount_partition.sh
+++ b/func/3280_mount_partition.sh
@@ -30,27 +30,6 @@ skip_path() {
  return 1
 }

-#######################################
-# Function to generate btrfs-subvolumes.
-# Globals:
-#   ERR_BTRFS_SUBVOL
-#   TARGET
-# Arguments:
-#   $1: MOUNT_PATH
-#   $2: SUBVOLUME
-#######################################
-create_btrfs_subvolume() {
-  declare var_mount_path="$1"
-  declare var_subvolume="$2"
-
-  if ! btrfs subvolume create "${TARGET}${var_mount_path}/${var_subvolume}"; then
-    do_log "error" "false" "Error occurred at creation of subvolume: '${var_subvolume}' in: '${TARGET}${var_mount_path}'."
-    return "${ERR_BTRFS_SUBVOL}"
-  fi
-
-  do_log "info" "false" "Created: '${var_subvolume}' at: '${TARGET}${var_mount_path}'."
-}
-
 #######################################
 # Function to create the mount path and mount the respective device on it.
 # Globals:
@@ -166,8 +145,10 @@ mount_partition() {

  done

-  declare var_dev var_part var_fs_btrfs_compress var_fs_btrfs_level var_encryption_enable var_encryption_label \
-    var_fs_label var_fs_options var_fs_version var_mount_path var_mount_options var_mount_subvolume
+  declare var_dev var_part \
+    var_fs_btrfs_compress var_fs_btrfs_level var_fs_btrfs_subvolume var_fs_btrfs_snapshot \
+    var_encryption_enable var_encryption_label \
+    var_fs_label var_fs_options var_fs_version var_mount_path var_mount_options var_mount_optsnap
  declare -a ary_devs ary_parts

  ### Iterate over all devices in the recipe.
@@ -179,16 +160,18 @@ mount_partition() {
    for var_part in "${ary_parts[@]}"; do

      ### Extract parameters from YAML.
-      var_fs_btrfs_compress=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.compress" "${VAR_SETUP_PART}")
-      var_fs_btrfs_level=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.level"       "${VAR_SETUP_PART}")
-      var_encryption_enable=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.encryption.enable"         "${VAR_SETUP_PART}")
-      var_encryption_label=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.encryption.label"           "${VAR_SETUP_PART}")
-      var_fs_label=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.label"                   "${VAR_SETUP_PART}")
-      var_fs_options=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.options"               "${VAR_SETUP_PART}")
-      var_fs_version=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.version"               "${VAR_SETUP_PART}")
-      var_mount_path=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.path"                       "${VAR_SETUP_PART}")
-      var_mount_options=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.options"                 "${VAR_SETUP_PART}")
-      var_mount_subvolume=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.subvolume"             "${VAR_SETUP_PART}")
+      var_fs_btrfs_compress=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.compress"   "${VAR_SETUP_PART}")
+      var_fs_btrfs_level=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.level"         "${VAR_SETUP_PART}")
+      var_fs_btrfs_subvolume=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.subvolume" "${VAR_SETUP_PART}")
+      var_fs_btrfs_snapshot=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.btrfs.snapshot"   "${VAR_SETUP_PART}")
+      var_encryption_enable=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.encryption.enable"           "${VAR_SETUP_PART}")
+      var_encryption_label=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.encryption.label"             "${VAR_SETUP_PART}")
+      var_fs_label=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.label"                     "${VAR_SETUP_PART}")
+      var_fs_options=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.options"                 "${VAR_SETUP_PART}")
+      var_fs_version=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.filesystem.version"                 "${VAR_SETUP_PART}")
+      var_mount_path=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.path"                         "${VAR_SETUP_PART}")
+      var_mount_options=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.options"                   "${VAR_SETUP_PART}")
+      var_mount_optsnap=$(yq_val ".recipe.${VAR_RECIPE_STRING}.dev.${var_dev}.${var_part}.mount.optsnap"                   "${VAR_SETUP_PART}")

      ### Skip already mounted paths ("/", "/boot", "/boot/efi") and skip ("/recovery")
      skip_path "${var_mount_path}" && continue
@@ -231,19 +214,38 @@ mount_partition() {

      fi

-      declare device
-      device=$(resolve_device "${var_dev}" "${var_part}" "${var_encryption_enable}" "${var_encryption_label}")
+      declare var_resolved_dev
+      var_resolved_dev=$(resolve_device "${var_dev}" "${var_part}" "${var_encryption_enable}" "${var_encryption_label}")
+
+      if [[ "${var_fs_version,,}" == btrfs ]]; then
+
+        ### Mount toplevel (subvolid=0) *without* extra options
+        declare -a ary_cmd_mount=(mount -o "subvolid=0" "${var_resolved_dev}" "${VAR_SAFE_MNT_BASE}")
+        safe_exec "${ary_cmd_mount[@]}" "${ERR_BTRFS_INITPH}" || return "${ERR_BTRFS_INITPH}"
+
+        btrfs subvolume create "${VAR_SAFE_MNT_BASE}"/"${var_fs_btrfs_subvolume}"
+
+        if [[ -n "${var_fs_btrfs_snapshot}" ]]; then
+          btrfs subvolume create "${VAR_SAFE_MNT_BASE}"/"${var_fs_btrfs_snapshot}" || return "${ERR_BTRFS_SUBVOL}"
+        fi
+
+        umount "${VAR_SAFE_MNT_BASE}"
+
+      fi

      case "${var_fs_version,,}:${var_encryption_enable,,}" in
        btrfs:*)
          validate_btrfs_compression "${var_fs_btrfs_compress}" "${var_fs_btrfs_level}" || return "${ERR_BTRFS_OPTION}"
          declare var_btrfs_compression_options="compress=${var_fs_btrfs_compress}:${var_fs_btrfs_level}"
          [[ -n "${var_mount_options}" ]] && var_btrfs_compression_options+=",${var_mount_options}"
-          mount_with_dir "${var_mount_path}" "${device}" "${var_btrfs_compression_options}" || return "${ERR_MOUNTING_DEV}"
-          [[ -n ${var_mount_subvolume} ]] && create_btrfs_subvolume "${var_mount_path}" "${var_mount_subvolume}"
+          mount_with_dir "${var_mount_path}" "${var_resolved_dev}" "${var_btrfs_compression_options}" || return "${ERR_MOUNTING_DEV}"
+          if [[ -n "${var_fs_btrfs_snapshot}" ]]; then
+            mkdir -p "${TARGET}${var_mount_path}/.snapshots"
+            mount -o "${var_mount_optsnap}" "${var_resolved_dev}" "${TARGET}${var_mount_path}/.snapshots"
+          fi
          ;;
        ext4:*)
-          mount_with_dir "${var_mount_path}" "${device}" "${var_mount_options}" || return "${ERR_MOUNTING_DEV}"
+          mount_with_dir "${var_mount_path}" "${var_resolved_dev}" "${var_mount_options}" || return "${ERR_MOUNTING_DEV}"
          ;;
        *) do_log "error" "false" "Unsupported fs/encryption combination."
           return "${ERR_MOUNTING_DEV}" ;;