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