UI for reusing LVM volume groups

rust/agama-lib/share/storage.schema.json

@@ -300,7 +300,9 @@
         { "$ref": "#/$defs/advancedLogicalVolumesGenerator" },
         { "$ref": "#/$defs/logicalVolume" },
         { "$ref": "#/$defs/thinPoolLogicalVolume" },
-        { "$ref": "#/$defs/thinLogicalVolume" }
+        { "$ref": "#/$defs/thinLogicalVolume" },
+        { "$ref": "#/$defs/logicalVolumeToDelete" },
+        { "$ref": "#/$defs/logicalVolumeToDeleteIfNeeded" }
       ]
     },
     "advancedLogicalVolumesGenerator": {
@@ -366,6 +368,31 @@
         "filesystem": { "$ref": "#/$defs/filesystem" }
       }
     },
+    "logicalVolumeToDelete": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["delete", "search"],
+      "properties": {
+        "search": { "$ref": "#/$defs/deleteLogicalVolumeSearch" },
+        "delete": {
+          "description": "Delete the logical volume.",
+          "const": true
+        }
+      }
+    },
+    "logicalVolumeToDeleteIfNeeded": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["deleteIfNeeded", "search"],
+      "properties": {
+        "search": { "$ref": "#/$defs/deleteLogicalVolumeSearch" },
+        "deleteIfNeeded": {
+          "description": "Delete the logical volume if needed to make space.",
+          "const": true
+        },
+        "size": { "$ref": "#/$defs/size" }
+      }
+    },
     "logicalVolumeStripes": {
       "description": "Number of stripes.",
       "type": "integer",
@@ -587,6 +614,23 @@
         "ifNotFound": { "$ref": "#/$defs/searchCreatableActions" }
       }
     },
+    "deleteLogicalVolumeSearch": {
+      "anyOf": [
+        { "$ref": "#/$defs/searchAll" },
+        { "$ref": "#/$defs/searchName" },
+        { "$ref": "#/$defs/deleteLogicalVolumeAdvancedSearch" }
+      ]
+    },
+    "deleteLogicalVolumeAdvancedSearch": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "condition": { "$ref": "#/$defs/logicalVolumeSearchCondition" },
+        "sort": { "$ref": "#/$defs/logicalVolumeSearchSort" },
+        "max": { "$ref": "#/$defs/searchMax" },
+        "ifNotFound": { "$ref": "#/$defs/searchActions" }
+      }
+    },
     "logicalVolumeSearchCondition": {
       "anyOf": [
         { "$ref": "#/$defs/searchConditionName" },

rust/share/system.storage.schema.json

@@ -21,6 +21,11 @@
       "type": "array",
       "items": { "type": "integer" }
     },
+    "availableVolumeGroups": {
+      "description": "SIDs of the available LVM volume groups",
+      "type": "array",
+      "items": { "type": "integer" }
+    },
     "candidateDrives": {
       "description": "SIDs of the drives that are candidate for installation",
       "type": "array",

service/lib/agama/dbus/storage/manager.rb

@@ -36,7 +36,7 @@ module Agama
   module DBus
     module Storage
       # D-Bus object to manage storage installation
-      class Manager < BaseObject
+      class Manager < BaseObject # rubocop:disable Metrics/ClassLength
         extend Yast::I18n
         include Yast::I18n
         include WithIssues
@@ -384,15 +384,16 @@ def serialize_system
           return serialize_nil unless manager.probed?
 
           json = {
-            devices:            devices_json(:probed),
-            availableDrives:    available_drives,
-            availableMdRaids:   available_md_raids,
-            candidateDrives:    candidate_drives,
-            candidateMdRaids:   candidate_md_raids,
-            issues:             system_issues_json,
-            productMountPoints: product_mount_points,
-            encryptionMethods:  encryption_methods,
-            volumeTemplates:    volume_templates
+            devices:               devices_json(:probed),
+            availableDrives:       available_drives,
+            availableMdRaids:      available_md_raids,
+            availableVolumeGroups: available_volume_groups,
+            candidateDrives:       candidate_drives,
+            candidateMdRaids:      candidate_md_raids,
+            issues:                system_issues_json,
+            productMountPoints:    product_mount_points,
+            encryptionMethods:     encryption_methods,
+            volumeTemplates:       volume_templates
           }
           JSON.pretty_generate(json)
         end
@@ -510,6 +511,12 @@ def candidate_md_raids
           proposal.storage_system.candidate_md_raids.map(&:sid)
         end
 
+        # @see Storage::System#available_volume_groups
+        # @return [Array<Integer>]
+        def available_volume_groups
+          proposal.storage_system.available_volume_groups.map(&:sid)
+        end
+
         # Meaningful mount points for the current product.
         #
         # @return [Array<String>]

service/lib/agama/storage/config.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-# Copyright (c) [2024-2025] SUSE LLC
+# Copyright (c) [2024-2026] SUSE LLC
 #
 # All Rights Reserved.
 #
@@ -112,6 +112,11 @@ def partitionable(device_alias)
         supporting_partitions.find { |d| d.alias?(device_alias) }
       end
 
+      # @return [Array<Configs::Partition, Configs::LogicalVolume>]
+      def volumes
+        partitions + logical_volumes
+      end
+
       # @return [Array<Configs::Partition>]
       def partitions
         supporting_partitions.flat_map(&:partitions)
@@ -131,7 +136,7 @@ def filesystems
       #
       # @return [Array<#search>]
       def supporting_search
-        drives + md_raids + partitions
+        drives + md_raids + partitions + volume_groups + logical_volumes
       end
 
       # Configs with configurable encryption.
@@ -166,7 +171,7 @@ def supporting_partitions
       #
       # @return [#delete?]
       def supporting_delete
-        partitions
+        partitions + logical_volumes
       end
 
       # Config objects that could act as physical volume
@@ -223,6 +228,20 @@ def valid_partitions
         partitions.reject { |p| skipped?(p) }
       end
 
+      # Volume group configs, excluding skipped ones.
+      #
+      # @return [Array<Configs::VolumeGroup>]
+      def valid_volume_groups
+        volume_groups.reject { |d| skipped?(d) }
+      end
+
+      # Logical volume configs, excluding skipped ones.
+      #
+      # @return [Array<Configs::LogicalVolume>]
+      def valid_logical_volumes
+        logical_volumes.reject { |d| skipped?(d) }
+      end
+
       # Configs directly using a device with the given alias.
       #
       # @note Devices using the given alias as a target device (e.g., for creating physical volumes)
@@ -242,6 +261,14 @@ def target_users(device_alias)
         [boot_target_user(device_alias), vg_target_users(device_alias)].flatten.compact
       end
 
+      # Finds the config assigned to the given device.
+      #
+      # @param device [Y2Storage::BlkDevice]
+      # @return [#search]
+      def find_device(device)
+        supporting_search.find { |c| c.found_device == device }
+      end
+
     private
 
       # MD RAIDs using the given alias as member device.

service/lib/agama/storage/config_checkers/logical_volume.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-# Copyright (c) [2024-2025] SUSE LLC
+# Copyright (c) [2024-2026] SUSE LLC
 #
 # All Rights Reserved.
 #
@@ -20,8 +20,10 @@
 # find current contact information at www.suse.com.
 
 require "agama/storage/config_checkers/base"
+require "agama/storage/config_checkers/with_alias"
 require "agama/storage/config_checkers/with_encryption"
 require "agama/storage/config_checkers/with_filesystem"
+require "agama/storage/config_checkers/with_search"
 require "yast/i18n"
 
 module Agama
@@ -30,18 +32,22 @@ module ConfigCheckers
       # Class for checking a logical volume config.
       class LogicalVolume < Base
         include Yast::I18n
+        include WithAlias
         include WithEncryption
         include WithFilesystem
+        include WithSearch
 
         # @param config [Configs::LogicalVolume]
         # @param volume_group_config [Configs::VolumeGroup]
+        # @param storage_config [Storage::Config]
         # @param product_config [Agama::Config]
-        def initialize(config, volume_group_config, product_config)
+        def initialize(config, volume_group_config, storage_config, product_config)
           super()
 
           textdomain "agama"
           @config = config
           @volume_group_config = volume_group_config
+          @storage_config = storage_config
           @product_config = product_config
         end
 
@@ -50,6 +56,8 @@ def initialize(config, volume_group_config, product_config)
         # @return [Array<Issue>]
         def issues
           [
+            alias_issues,
+            search_issues,
             filesystem_issues,
             encryption_issues,
             missing_thin_pool_issue
@@ -64,6 +72,9 @@ def issues
         # @return [Configs::VolumeGroup]
         attr_reader :volume_group_config
 
+        # @return [Storage::Config]
+        attr_reader :storage_config
+
         # @return [Agama::Config]
         attr_reader :product_config