#!/usr/bin/env python # # Test that snapshots move the throttling configuration to the active # layer # # Copyright (C) 2015 Igalia, S.L. # # 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 <http://www.gnu.org/licenses/>. # import iotests import os class TestLiveSnapshot(iotests.QMPTestCase): base_img = os.path.join(iotests.test_dir, 'base.img') target_img = os.path.join(iotests.test_dir, 'target.img') group = 'mygroup' iops = 6000 iops_size = 1024 def setUp(self): opts = [] opts.append('node-name=base') opts.append('throttling.group=%s' % self.group) opts.append('throttling.iops-total=%d' % self.iops) opts.append('throttling.iops-size=%d' % self.iops_size) iotests.qemu_img('create', '-f', iotests.imgfmt, self.base_img, '100M') self.vm = iotests.VM().add_drive(self.base_img, ','.join(opts)) self.vm.launch() def tearDown(self): self.vm.shutdown() os.remove(self.base_img) os.remove(self.target_img) def checkConfig(self, active_layer): result = self.vm.qmp('query-named-block-nodes') for r in result['return']: if r['node-name'] == active_layer: self.assertEqual(r['group'], self.group) self.assertEqual(r['iops'], self.iops) self.assertEqual(r['iops_size'], self.iops_size) else: self.assertFalse(r.has_key('group')) self.assertEqual(r['iops'], 0) self.assertFalse(r.has_key('iops_size')) def testSnapshot(self): self.checkConfig('base') self.vm.qmp('blockdev-snapshot-sync', node_name = 'base', snapshot_node_name = 'target', snapshot_file = self.target_img, format = iotests.imgfmt) self.checkConfig('target') if __name__ == '__main__': iotests.main(supported_fmts=['qcow2'])