#!/usr/bin/env python # # Tests for image block commit. # # Copyright (C) 2012 IBM, Corp. # Copyright (C) 2012 Red Hat, Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # 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, see . # # Test for live block commit # Derived from Image Streaming Test 030 import time import os import iotests from iotests import qemu_img, qemu_io import struct import errno backing_img = os.path.join(iotests.test_dir, 'backing.img') mid_img = os.path.join(iotests.test_dir, 'mid.img') test_img = os.path.join(iotests.test_dir, 'test.img') class ImageCommitTestCase(iotests.QMPTestCase): '''Abstract base class for image commit test cases''' def wait_for_complete(self, need_ready=False): completed = False ready = False while not completed: for event in self.vm.get_qmp_events(wait=True): if event['event'] == 'BLOCK_JOB_COMPLETED': self.assert_qmp_absent(event, 'data/error') self.assert_qmp(event, 'data/type', 'commit') self.assert_qmp(event, 'data/device', 'drive0') self.assert_qmp(event, 'data/offset', event['data']['len']) if need_ready: self.assertTrue(ready, "Expecting BLOCK_JOB_COMPLETED event") completed = True elif event['event'] == 'BLOCK_JOB_READY': ready = True self.assert_qmp(event, 'data/type', 'commit') self.assert_qmp(event, 'data/device', 'drive0') self.vm.qmp('block-job-complete', device='drive0') self.assert_no_active_block_jobs() self.vm.shutdown() def run_commit_test(self, top, base, need_ready=False, node_names=False): self.assert_no_active_block_jobs() if node_names: result = self.vm.qmp('block-commit', device='drive0', top_node=top, base_node=base) else: result = self.vm.qmp('block-commit', device='drive0', top=top, base=base) self.assert_qmp(result, 'return', {}) self.wait_for_complete(need_ready) def run_default_commit_test(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0') self.assert_qmp(result, 'return', {}) self.wait_for_complete() class TestSingleDrive(ImageCommitTestCase): # Need some space after the copied data so that throttling is effective in # tests that use it rather than just completing the job immediately image_len = 2 * 1024 * 1024 test_len = 1 * 1024 * 256 def setUp(self): iotests.create_image(backing_img, self.image_len) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img) qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', backing_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img) self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=mid,backing.backing.node-name=base", interface="none") self.vm.add_device(iotests.get_virtio_scsi_device()) self.vm.add_device("scsi-hd,id=scsi0,drive=drive0") self.vm.launch() self.has_quit = False def tearDown(self): self.vm.shutdown(has_quit=self.has_quit) os.remove(test_img) os.remove(mid_img) os.remove(backing_img) def test_commit(self): self.run_commit_test(mid_img, backing_img) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) def test_commit_node(self): self.run_commit_test("mid", "base", node_names=True) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) def test_commit_with_filter_and_quit(self): result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg') self.assert_qmp(result, 'return', {}) # Add a filter outside of the backing chain result = self.vm.qmp('blockdev-add', driver='throttle', node_name='filter', throttle_group='tg', file='mid') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-commit', device='drive0') self.assert_qmp(result, 'return', {}) # Quit immediately, thus forcing a simultaneous cancel of the # block job and a bdrv_drain_all() result = self.vm.qmp('quit') self.assert_qmp(result, 'return', {}) self.has_quit = True # Same as above, but this time we add the filter after starting the job def test_commit_plus_filter_and_quit(self): result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-commit', device='drive0') self.assert_qmp(result, 'return', {}) # Add a filter outside of the backing chain result = self.vm.qmp('blockdev-add', driver='throttle', node_name='filter', throttle_group='tg', file='mid') self.assert_qmp(result, 'return', {}) # Quit immediately, thus forcing a simultaneous cancel of the # block job and a bdrv_drain_all() result = self.vm.qmp('quit') self.assert_qmp(result, 'return', {}) self.has_quit = True def test_device_not_found(self): result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img) self.assert_qmp(result, 'error/class', 'DeviceNotFound') def test_top_same_base(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % backing_img) def test_top_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Top image file badfile not found') def test_base_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found') def test_top_node_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top_node='badfile', base_node='base') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "Cannot find device= nor node_name=badfile") def test_base_node_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='badfile') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "Cannot find device= nor node_name=badfile") def test_top_path_and_node(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='base', top='%s' % mid_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "'top-node' and 'top' are mutually exclusive") def test_base_path_and_node(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='base', base='%s' % backing_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "'base-node' and 'base' are mutually exclusive") def test_top_is_active(self): self.run_commit_test(test_img, backing_img, need_ready=True) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) def test_top_is_default_active(self): self.run_default_commit_test() self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) def test_top_and_base_reversed(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % mid_img) def test_top_and_base_node_reversed(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top_node='base', base_node='top') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "'top' is not in this backing file chain") def test_top_node_in_wrong_chain(self): self.assert_no_active_block_jobs() result = self.vm.qmp('blockdev-add', driver='null-co', node_name='null') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-commit', device='drive0', top_node='null', base_node='base') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "'null' is not in this backing file chain") # When the job is running on a BB that is automatically deleted on hot # unplug, the job is cancelled when the device disappears def test_hot_unplug(self): if self.image_len == 0: return self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top=mid_img, base=backing_img, speed=(self.image_len // 4)) self.assert_qmp(result, 'return', {}) result = self.vm.qmp('device_del', id='scsi0') self.assert_qmp(result, 'return', {}) cancelled = False deleted = False while not cancelled or not deleted: for event in self.vm.get_qmp_events(wait=True): if event['event'] == 'DEVICE_DELETED': self.assert_qmp(event, 'data/device', 'scsi0') deleted = True elif event['event'] == 'BLOCK_JOB_CANCELLED': self.assert_qmp(event, 'data/device', 'drive0') cancelled = True elif event['event'] == 'JOB_STATUS_CHANGE': self.assert_qmp(event, 'data/id', 'drive0') else: self.fail("Unexpected event %s" % (event['event'])) self.assert_no_active_block_jobs() # Tests that the insertion of the commit_top filter node doesn't make a # difference to query-blockstat def test_implicit_node(self): if self.image_len == 0: return self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top=mid_img, base=backing_img, speed=(self.image_len // 4)) self.assert_qmp(result, 'return', {}) result = self.vm.qmp('query-block') self.assert_qmp(result, 'return[0]/inserted/file', test_img) self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) self.assert_qmp(result, 'return[0]/inserted/backing_file', mid_img) self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 2) self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', mid_img) self.assert_qmp(result, 'return[0]/inserted/image/backing-image/backing-image/filename', backing_img) result = self.vm.qmp('query-blockstats') self.assert_qmp(result, 'return[0]/node-name', 'top') self.assert_qmp(result, 'return[0]/backing/node-name', 'mid') self.assert_qmp(result, 'return[0]/backing/backing/node-name', 'base') self.cancel_and_wait() self.assert_no_active_block_jobs() class TestRelativePaths(ImageCommitTestCase): image_len = 1 * 1024 * 1024 test_len = 1 * 1024 * 256 dir1 = "dir1" dir2 = "dir2/" dir3 = "dir2/dir3/" test_img = os.path.join(iotests.test_dir, dir3, 'test.img') mid_img = "../mid.img" backing_img = "../dir1/backing.img" backing_img_abs = os.path.join(iotests.test_dir, dir1, 'backing.img') mid_img_abs = os.path.join(iotests.test_dir, dir2, 'mid.img') def setUp(self): try: os.mkdir(os.path.join(iotests.test_dir, self.dir1)) os.mkdir(os.path.join(iotests.test_dir, self.dir2)) os.mkdir(os.path.join(iotests.test_dir, self.dir3)) except OSError as exception: if exception.errno != errno.EEXIST: raise iotests.create_image(self.backing_img_abs, TestRelativePaths.image_len) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.backing_img_abs, self.mid_img_abs) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.mid_img_abs, self.test_img) qemu_img('rebase', '-u', '-b', self.backing_img, self.mid_img_abs) qemu_img('rebase', '-u', '-b', self.mid_img, self.test_img) qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', self.backing_img_abs) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', self.mid_img_abs) self.vm = iotests.VM().add_drive(self.test_img) self.vm.launch() def tearDown(self): self.vm.shutdown() os.remove(self.test_img) os.remove(self.mid_img_abs) os.remove(self.backing_img_abs) try: os.rmdir(os.path.join(iotests.test_dir, self.dir1)) os.rmdir(os.path.join(iotests.test_dir, self.dir3)) os.rmdir(os.path.join(iotests.test_dir, self.dir2)) except OSError as exception: if exception.errno != errno.EEXIST and exception.errno != errno.ENOTEMPTY: raise def test_commit(self): self.run_commit_test(self.mid_img, self.backing_img) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed")) def test_device_not_found(self): result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % self.mid_img) self.assert_qmp(result, 'error/class', 'DeviceNotFound') def test_top_same_base(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='%s' % self.mid_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img) def test_top_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Top image file badfile not found') def test_base_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='badfile') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found') def test_top_is_active(self): self.run_commit_test(self.test_img, self.backing_img) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed")) def test_top_and_base_reversed(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % self.mid_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img) class TestSetSpeed(ImageCommitTestCase): image_len = 80 * 1024 * 1024 # MB def setUp(self): qemu_img('create', backing_img, str(TestSetSpeed.image_len)) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 0 512', test_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img) self.vm = iotests.VM().add_drive('blkdebug::' + test_img) self.vm.launch() def tearDown(self): self.vm.shutdown() os.remove(test_img) os.remove(mid_img) os.remove(backing_img) def test_set_speed(self): self.assert_no_active_block_jobs() self.vm.pause_drive('drive0') result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=1024 * 1024) self.assert_qmp(result, 'return', {}) # Ensure the speed we set was accepted result = self.vm.qmp('query-block-jobs') self.assert_qmp(result, 'return[0]/device', 'drive0') self.assert_qmp(result, 'return[0]/speed', 1024 * 1024) self.cancel_and_wait(resume=True) class TestActiveZeroLengthImage(TestSingleDrive): image_len = 0 class TestReopenOverlay(ImageCommitTestCase): image_len = 1024 * 1024 img0 = os.path.join(iotests.test_dir, '0.img') img1 = os.path.join(iotests.test_dir, '1.img') img2 = os.path.join(iotests.test_dir, '2.img') img3 = os.path.join(iotests.test_dir, '3.img') def setUp(self): iotests.create_image(self.img0, self.image_len) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img0, self.img1) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img1, self.img2) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img2, self.img3) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xab 0 128K', self.img1) self.vm = iotests.VM().add_drive(self.img3) self.vm.launch() def tearDown(self): self.vm.shutdown() os.remove(self.img0) os.remove(self.img1) os.remove(self.img2) os.remove(self.img3) # This tests what happens when the overlay image of the 'top' node # needs to be reopened in read-write mode in order to update the # backing image string. def test_reopen_overlay(self): self.run_commit_test(self.img1, self.img0) if __name__ == '__main__': iotests.main(supported_fmts=['qcow2', 'qed'])