32 backing_img = os.path.join(iotests.test_dir, 'backing.img')  variable
81         iotests.create_image(backing_img, self.image_len)
83                  '-o', 'backing_file=%s' % backing_img, '-F', 'raw', mid_img)
88             qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', backing_img)
100         os.remove(backing_img)
103         self.run_commit_test(mid_img, backing_img)
106         qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img)
107         qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img)
113         qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img)
114         qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img)
149 …ult = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img)
151         self.assert_qmp(result, 'error/desc', "Can't find '%s' in the backing chain" % backing_img)
155 …      result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img)
185 ….vm.qmp('block-commit', device='drive0', top_node='mid', base_node='base', base='%s' % backing_img)
190         self.run_commit_test(test_img, backing_img, need_ready=True)
193         qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img)
194         qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img)
200         qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img)
201         qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img)
205 … result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img)
232                     base=backing_img, speed=(self.image_len // 4))
260                     base=backing_img, speed=(self.image_len // 4))
269 …lf.assert_qmp(result, 'return[0]/inserted/image/backing-image/backing-image/filename', backing_img)
289     backing_img = "../dir1/backing.img"  variable in TestRelativePaths
309         qemu_img('rebase', '-u', '-b', self.backing_img,
332         self.run_commit_test(self.mid_img, self.backing_img)
348 … result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img)
359         self.run_commit_test(self.test_img, self.backing_img)
365 …result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % sel…
374         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
376                  '-o', 'backing_file=%s' % backing_img, '-F', 'raw', mid_img)
389         os.remove(backing_img)
445         iotests.create_image(backing_img, self.image_len)
447                  '-o', 'backing_file=%s' % backing_img,
465         os.remove(backing_img)
472                           filename=backing_img)
664         self.assertFalse(iotests.compare_images(mid_img, backing_img, fmt2='raw'),
675         self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'),
687         self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'),
698         self.assertFalse(iotests.compare_images(mid_img, backing_img, fmt2='raw'),
709         self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'),
721         self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'),