src/lib/y2partitioner/actions/edit_bcache.rb
# Copyright (c) [2019-2020] SUSE LLC
#
# All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2 of the GNU General Public License as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, contact SUSE LLC.
#
# To contact SUSE LLC about this file by physical or electronic mail, you may
# find current contact information at www.suse.com.
require "yast"
require "y2partitioner/actions/base"
require "y2partitioner/actions/controllers/bcache"
require "y2partitioner/dialogs/bcache"
require "y2partitioner/ui_state"
module Y2Partitioner
module Actions
# Action for editing a Bcache device, see {Actions::Base}
class EditBcache < Base
# Constructor
#
# @param bcache [Y2Storage::Bcache]
def initialize(bcache)
super()
textdomain "storage"
@controller = Controllers::Bcache.new(bcache)
UIState.instance.select_row(bcache.sid)
end
private
# @return [Controllers::Bcache]
attr_reader :controller
# List of errors that avoid to edit a Bcache
#
# @see Actions::Base#errors
#
# @return [Array<String>]
def errors
(super + [flash_only_error, non_editable_error]).compact
end
# Error when the bcache is Flash-only
#
# @return [String, nil] nil if the bcache is not Flash-only.
def flash_only_error
return nil unless flash_only_bcache?
# TRANSLATORS: error message, %{name} is replaced by a bcache name (e.g., /dev/bcache0)
format(
_("The device %{name} is a flash-only bcache and its caching cannot be modified."),
name: controller.bcache.name
)
end
# Error when the caching device cannot be modified, see {#editable_bcache_cset?}
#
# @return [String, nil] nil if the caching device can be modified.
def non_editable_error
return nil if editable_bcache_cset?
# TRANSLATORS: error message, %{name} is replaced by a bcache name (e.g., /dev/bcache0)
format(
_("The bcache %{name} is already created on disk. Such device cannot be modified\n" \
"because that might imply a detaching operation. Unfortunately detaching can take\n" \
"a very long time in some situations."),
name: controller.bcache.name
)
end
# Opens a dialog to edit a Bcache
#
# The bcache is updated only if the dialog is accepted.
#
# @see Actions::Base#perform_action
def perform_action
dialog = Dialogs::Bcache.new(controller)
return unless dialog.run == :next
controller.update_bcache(dialog.caching_device, dialog.options)
:finish
end
# Whether the Bcache is Flash-only
#
# @return [Boolean]
def flash_only_bcache?
controller.bcache.flash_only?
end
# Whether the caching set can be modified
#
# @return [Boolean]
def editable_bcache_cset?
!controller.committed_bcache? || !controller.committed_bcache_cset?
end
end
end
end