1#!/usr/bin/env python3 2# group: rw quick 3# 4# Test mirror with unmap 5# 6# Copyright (C) 2015 Red Hat, Inc. 7# 8# This program is free software; you can redistribute it and/or modify 9# it under the terms of the GNU General Public License as published by 10# the Free Software Foundation; either version 2 of the License, or 11# (at your option) any later version. 12# 13# This program is distributed in the hope that it will be useful, 14# but WITHOUT ANY WARRANTY; without even the implied warranty of 15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16# GNU General Public License for more details. 17# 18# You should have received a copy of the GNU General Public License 19# along with this program. If not, see <http://www.gnu.org/licenses/>. 20# 21 22import time 23import os 24import iotests 25from iotests import qemu_img, qemu_io 26 27test_img = os.path.join(iotests.test_dir, 'test.img') 28target_img = os.path.join(iotests.test_dir, 'target.img') 29 30class TestSingleDrive(iotests.QMPTestCase): 31 image_len = 2 * 1024 * 1024 # MB 32 33 def setUp(self): 34 # Write data to the image so we can compare later 35 qemu_img('create', '-f', iotests.imgfmt, test_img, str(TestSingleDrive.image_len)) 36 qemu_io('-f', iotests.imgfmt, '-c', 'write -P0x5d 0 2M', test_img) 37 38 self.vm = iotests.VM().add_drive(test_img, 'discard=unmap') 39 self.vm.launch() 40 41 def tearDown(self): 42 self.vm.shutdown() 43 os.remove(test_img) 44 try: 45 os.remove(target_img) 46 except OSError: 47 pass 48 49 def test_mirror_discard(self): 50 self.vm.cmd('drive-mirror', device='drive0', sync='full', 51 target=target_img) 52 self.vm.hmp_qemu_io('drive0', 'discard 0 64k') 53 self.complete_and_wait('drive0') 54 self.vm.shutdown() 55 self.assertTrue(iotests.compare_images(test_img, target_img), 56 'target image does not match source after mirroring') 57 58if __name__ == '__main__': 59 iotests.main(supported_fmts=['raw', 'qcow2'], 60 supported_protocols=['file']) 61