src/lib/y2storage/planned/can_be_resized.rb
# Copyright (c) [2017] 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"
module Y2Storage
module Planned
# Mixin for planned devices that can be resized. This mixing depends
# on Y2Storage::Planned::HasSize being included.
#
# @see Planned::Device
module CanBeResized
# @return [Boolean] Determines whether the device should be resized
attr_accessor :resize
# @see #resize
#
# @return [Boolean]
def resize?
!!resize
end
# Determines whether the device will shrink
#
# @param devicegraph [Devicegraph] Device graph to adjust
# @return [Boolean]
def shrink?(devicegraph)
max_size <= device_to_reuse(devicegraph).size
end
protected
# Implements reuse_device! hook
#
# @param device [Y2Storage::Device]
# @see Y2Storage::Planned::Device#reuse_device!
def reuse_device!(device)
super
return unless resize?
resize_info = device.detect_resize_info
return unless resize_info.resize_ok?
resize_device!(device, resize_info)
end
# Assigns size to the real device in order to resize it
#
# @param device [Y2Storage::Device]
def resize_device!(device, resize_info)
device.size =
if max_size > resize_info.max_size || max_size == DiskSize.unlimited
resize_info.max_size
elsif max_size < resize_info.min_size
resize_info.min_size
else
max_size
end
if max_size != device.size && max_size != DiskSize.unlimited
log.warn "Resizing #{reuse_name} to #{max_size} was not possible. " \
"Using #{device.size} instead."
end
nil
end
end
end
end