1 files changed, 21 insertions, 0 deletions
diff --git a/db/post_migrate/20210222185538_remove_backup_labels_foreign_keys.rb b/db/post_migrate/20210222185538_remove_backup_labels_foreign_keys.rb
new file mode 100644
index 00000000000..614ec4875d6
--- /dev/null
+++ b/db/post_migrate/20210222185538_remove_backup_labels_foreign_keys.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class RemoveBackupLabelsForeignKeys < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    with_lock_retries do
+      remove_foreign_key_if_exists(:backup_labels, :projects)
+      remove_foreign_key_if_exists(:backup_labels, :namespaces)
+    end
+  end
+
+  def down
+    add_concurrent_foreign_key(:backup_labels, :projects, column: :project_id, on_delete: :cascade)
+    add_concurrent_foreign_key(:backup_labels, :namespaces, column: :group_id, on_delete: :cascade)
+  end
+end