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1 #!/usr/bin/env python3 2 # group: rw quick 3 # 4 # Test that snapshots move the throttling configuration to the active 5 # layer 6 # 7 # Copyright (C) 2015 Igalia, S.L. 8 # 9 # This program is free software; you can redistribute it and/or modify 10 # it under the terms of the GNU General Public License as published by 11 # the Free Software Foundation; either version 2 of the License, or 12 # (at your option) any later version. 13 # 14 # This program is distributed in the hope that it will be useful, 15 # but WITHOUT ANY WARRANTY; without even the implied warranty of 16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 # GNU General Public License for more details. 18 # 19 # You should have received a copy of the GNU General Public License 20 # along with this program. If not, see <http://www.gnu.org/licenses/>. 21 # 22 23 import iotests 24 import os 25 26 class TestLiveSnapshot(iotests.QMPTestCase): 27 base_img = os.path.join(iotests.test_dir, 'base.img') 28 target_img = os.path.join(iotests.test_dir, 'target.img') 29 group = 'mygroup' 30 iops = 6000 31 iops_size = 1024 32 33 def setUp(self): 34 opts = [] 35 opts.append('node-name=base') 36 opts.append('throttling.group=%s' % self.group) 37 opts.append('throttling.iops-total=%d' % self.iops) 38 opts.append('throttling.iops-size=%d' % self.iops_size) 39 iotests.qemu_img('create', '-f', iotests.imgfmt, self.base_img, '100M') 40 self.vm = iotests.VM().add_drive(self.base_img, ','.join(opts)) 41 self.vm.launch() 42 43 def tearDown(self): 44 self.vm.shutdown() 45 os.remove(self.base_img) 46 os.remove(self.target_img) 47 48 def checkConfig(self, active_layer): 49 result = self.vm.qmp('query-block') 50 for r in result['return']: 51 r = r['inserted'] 52 if r['node-name'] == active_layer: 53 self.assertEqual(r['group'], self.group) 54 self.assertEqual(r['iops'], self.iops) 55 self.assertEqual(r['iops_size'], self.iops_size) 56 else: 57 self.assertFalse('group' in r) 58 self.assertEqual(r['iops'], 0) 59 self.assertFalse('iops_size' in r) 60 61 def testSnapshot(self): 62 self.checkConfig('base') 63 self.vm.qmp('blockdev-snapshot-sync', 64 node_name = 'base', 65 snapshot_node_name = 'target', 66 snapshot_file = self.target_img, 67 format = iotests.imgfmt) 68 self.checkConfig('target') 69 70 if __name__ == '__main__': 71 iotests.main(supported_fmts=['qcow2'], 72 supported_protocols=['file'])